SFFSBF6 July 2026 ISOUSB211-Q1
4 Pin Failure Mode Analysis (Pin FMA)
This section provides a failure mode analysis (FMA) for the pins of the ISOUSB211-Q1. The failure modes covered in this document include the typical pin-by-pin failure scenarios, see Table 4-2:
- Pin short-circuited to ground
- Pin open-circuited
- Pin short-circuited to an adjacent pin
- Pin short-circuited to supply
Table 4-2 also indicates how these pin conditions can affect the device as per the failure effects classification in Table 4-1.
Table 4-1 TI Classification of Failure Effects
| Class | Failure Effects |
|---|---|
| A | Potential device damage that affects functionality. |
| B | No device damage, but loss of functionality. |
| C | No device damage, but performance degradation. |
| D | No device damage, no impact to functionality or performance. |
Figure 4-1 shows the ISOUSB211-Q1 pin diagram. For a detailed description of the device pins, see the Pin Configuration and Functions section in the ISOUSB211-Q1 datasheet.
Figure 4-1 Pin DiagramFollowing are the assumptions of use and the device configuration assumed for the pin FMA in this section:
- For short-to-ground analysis, the ground referenced for the short is the ground on that side of the isolation barrier.
- For short-to-supply analysis, the supply referenced for the short is the supply on that side of the isolation barrier.
Table 4-2 Pin FMA for Device Pins Short-Circuited to
Ground, Open-Circuited, Short-Circuited to Adjacent Pin, and Short-Circuited to
Supply
| Pin Name | Pin No. | Potential Failure Mode | Description of Potential Failure Effects | Failure Effect Class |
|---|---|---|---|---|
| VBUS1 | 1 | Short-Circuited to Ground (Side-1) | The device has no power (one of the supply inputs is shorted to ground). Observe that the absolute maximum ratings for all pins of the device are met; otherwise, damage to the device is possible. This short circuit potentially causes high current to flow between the two GND1 pins (pin 3 and pin 12); potentially damaging the device. | A |
| VBUS1 | 1 | Open-Circuited | The device has no power (one of the supply inputs is open). If V3P3V1 connects to a power supply, the internal LDO can be damaged from the reverse current. Observe that the absolute maximum ratings for all pins of the device are met; otherwise, damage to the device is possible. | A |
| VBUS1 | 1 | Short-Circuited to Pin 2 (V3P3V1) | The device continues to function as expected if the voltage on VBUS1 is within the absolute maximum ratings for V3P3V1; otherwise, damage to the device is possible. | A |
| VBUS1 | 1 | Short-Circuited to Supply VBUS1 | The device continues to function as expected. Normal operation. | D |
| VBUS1 | 1 | Short-Circuited to Supply VCC1 (Side-1) | The device continues to function as expected. Normal operation. | D |
| V3P3V1 | 2 | Short-Circuited to Ground (Side-1) | The device has no power (one of the supply inputs is shorted to ground). Observe that the absolute maximum ratings for all pins of the device are met; otherwise, damage to the device is possible. This short circuit potentially causes high current to flow between the two GND1 pins (pin 3 and pin 12); potentially damaging the device. | A |
| V3P3V1 | 2 | Open-Circuited | Internal LDO can supply V3P3V1 if 4.25V to 5.5V is connected on VBUS1. However, the 3.3V output can have stability issues without proper external bypass capacitors. Otherwise, the device does not have the power to turn on, and there is a loss of functionality. | B |
| V3P3V1 | 2 | Short-Circuited to Pin 3 (GND1) | The device has no power (one of the supply inputs is shorted to ground). Observe that the absolute maximum ratings for all pins of the device are met; otherwise, damage to the device is possible. This short circuit potentially causes high current to flow between the two GND1 pins (pin 3 and pin 12); potentially damaging the device. | A |
| V3P3V1 | 2 | Short-Circuited to Supply VBUS1 | The device continues to function as expected if the voltage on VBUS1 is within the absolute maximum ratings for V3P3V1; otherwise, damage to the device is possible. | A |
| V3P3V1 | 2 | Short-Circuited to Supply VCC1 | The device continues to function as expected if the voltage on VCC1 is within the absolute maximum ratings for V3P3V1; otherwise, damage to the device is possible. | A |
| GND1 | 3 | Short-Circuited to Ground (Side-1) | The device continues to function as expected. Normal operation. | D |
| GND1 | 3 | Open-Circuited | The device receives return ground through pin 12 (GND1). Normal operation. | D |
| GND1 | 3 | Short-Circuited to Pin 4 (V1P8V1) | The device has no power (one of the supply inputs is shorted to ground). Observe that the absolute maximum ratings for all pins of the device are met; otherwise, damage to the device is possible. This short circuit potentially causes high current to flow between the two GND1 pins (pin 3 and pin 12); potentially damaging the device. | A |
| GND1 | 3 | Short-Circuited to Supply VBUS1 | The device has no power (one of the supply inputs is shorted to ground). Observe that the absolute maximum ratings for all pins of the device are met; otherwise, damage to the device is possible. This short circuit potentially causes high current to flow between the two GND1 pins (pin 3 and pin 12); potentially damaging the device. | A |
| GND1 | 3 | Short-Circuited to Supply VCC1 | The device has no power (one of the supply inputs is shorted to ground). Observe that the absolute maximum ratings for all pins of the device are met; otherwise, damage to the device is possible. This short circuit potentially causes high current to flow between the two GND1 pins (pin 3 and pin 12); potentially damaging the device. | A |
| V1P8V1 | 4 | Short-Circuited to Ground (Side-1) | The device has no power (one of the supply inputs is shorted to ground). Observe that the absolute maximum ratings for all pins of the device are met; otherwise, damage to the device is possible. This short circuit potentially causes high current to flow between the two GND1 pins (pin 3 and pin 12); potentially damaging the device. | A |
| V1P8V1 | 4 | Open-Circuited | Internal LDO can supply V1P8V1 if 2.4V to 5.5V is connected on VCC1. However, the 1.8V output can have stability issues without proper external bypass capacitors. Otherwise, the device does not have the power to turn on, and there is a loss of functionality. | B |
| V1P8V1 | 4 | Short-Circuited to Pin 5 (VCC1) | The device continues to function as expected if the voltage on VCC1 is within the absolute maximum ratings for V1P8V1; otherwise, damage to the device is possible. | A |
| V1P8V1 | 4 | Short-Circuited to Supply VBUS1 | This short circuit can potentially damage the device as the 1.8V domain circuits get exposed to voltages above the absolute maximum ratings for the circuits. | A |
| V1P8V1 | 4 | Short-Circuited to Supply VCC1 | The device continues to function as expected if the voltage on VCC1 is within the absolute maximum ratings for V1P8V1; otherwise, damage to the device is possible. | A |
| VCC1 | 5 | Short-Circuited to Ground (Side-1) | The device has no power (one of the supply inputs is shorted to ground). Observe that the absolute maximum ratings for all pins of the device are met; otherwise, damage to the device is possible. This short circuit potentially causes high current to flow between the two GND1 pins (pin 3 and pin 12); potentially damaging the device. | A |
| VCC1 | 5 | Open-Circuited | The device has no power (one of the supply inputs is open). If V1P8V1 connects to a power supply, the internal LDO can be damaged from the reverse current. Observe that the absolute maximum ratings for all pins of the device are met; otherwise, damage to the device is possible. | A |
| VCC1 | 5 | Short-Circuited to Pin 6 (V2OK) | This short circuit causes high current to flow between supply and ground during power-up; causing damage to the device. | A |
| VCC1 | 5 | Short-Circuited to Supply VBUS1 | The device continues to function as expected. Normal operation. | D |
| VCC1 | 5 | Short-Circuited to Supply VCC1 | The device continues to function as expected. Normal operation. | D |
| V2OK | 6 | Short-Circuited to Ground (Side-1) | There is a loss of the indication of the power condition of side two. This short circuit causes high current to flow between supply and ground; causing damage to the device. | A |
| V2OK | 6 | Open-Circuited | The device continues to function as expected. The indication that side two is powered up is not received. | D |
| V2OK | 6 | Short-Circuited to Pin 7 (UD-) | There is data corruption on UD-. There is a potential path between supply and ground, which can lead to device damage. Observe that the absolute maximum ratings for all pins of the device are met; otherwise, damage to the device is possible. | A |
| V2OK | 6 | Short-Circuited to Supply VBUS1 | This short circuit causes high current to flow between supply and ground during power-up; causing damage to the device. | A |
| V2OK | 6 | Short-Circuited to Supply VCC1 | This short circuit causes high current to flow between supply and ground during power-up; causing damage to the device. | A |
| UD- | 7 | Short-Circuited to Ground (Side-1) | Data corruption on UD-. Damage to the device is possible if UD- is driven high for an extended period of time. | A |
| UD- | 7 | Open-Circuited | The output state of UD- is undetermined. Communication is corrupted. | B |
| UD- | 7 | Short-Circuited to Pin 8 (UD+) | There is data corruption on UD- and UD+. Damage to the device is possible if opposite polarity is driven on both pins for an extended period of time. Communication is corrupted. | A |
| UD- | 7 | Short-Circuited to Supply VBUS1 | There is data corruption on UD-. Damage to the device is possible if UD- is driven low for an extended period of time. | A |
| UD- | 7 | Short-Circuited to Supply VCC1 | There is data corruption on UD-. Damage to the device is possible if UD- is driven low for an extended period of time. | A |
| UD+ | 8 | Short-Circuited to Ground (Side-1) | There is data corruption on UD+. Damage to the device is possible if UD+ is driven high for an extended period of time. | A |
| UD+ | 8 | Open-Circuited | The output state of UD+ is undetermined. Communication is corrupted. | B |
| UD+ | 8 | Short-Circuited to Pin 9 (EQ10) | There is data corruption on UD+. Observe that the absolute maximum ratings for all pins of the device are met; otherwise, damage to the device is possible. | A |
| UD+ | 8 | Short-Circuited to Supply VBUS1 | There is data corruption on UD+. Damage to the device is possible if UD+ is driven low for an extended period of time. | A |
| UD+ | 8 | Short-Circuited to Supply VCC1 | There is data corruption on UD+. Damage to the device is possible if UD+ is driven low for an extended period of time. | A |
| EQ10 | 9 | Short-Circuited to Ground (Side-1) | The equalization settings for HS mode do not work as expected. A degradation in performance can occur. | C |
| EQ10 | 9 | Open-Circuited | The equalization settings for HS mode do not work as expected. A degradation in performance can occur. | C |
| EQ10 | 9 | Short-Circuited to Pin 10 (EQ11) | The equalization settings for HS mode do not work as expected. A degradation in performance can occur. | C |
| EQ10 | 9 | Short-Circuited to Supply VBUS1 | The equalization settings for HS mode do not work as expected. A degradation in performance can occur. Observe that the absolute maximum ratings for all pins of the device are met; otherwise, damage to the device is possible. | A |
| EQ10 | 9 | Short-Circuited to Supply VCC1 | The equalization settings for HS mode do not work as expected. A degradation in performance can occur. Observe that the absolute maximum ratings for all pins of the device are met; otherwise, damage to the device is possible. | A |
| EQ11 | 10 | Short-Circuited to Ground (Side-1) | The equalization settings for HS mode do not work as expected. A degradation in performance can occur. | C |
| EQ11 | 10 | Open-Circuited | The equalization settings for HS mode do not work as expected. A degradation in performance can occur. | C |
| EQ11 | 10 | Short-Circuited to Pin 11 (V1P8V1) | The equalization settings for HS mode do not work as expected. A degradation in performance can occur. | C |
| EQ11 | 10 | Short-Circuited to Supply VBUS1 | The equalization settings for HS mode do not work as expected. A degradation in performance can occur. Observe that the absolute maximum ratings for all pins of the device are met; otherwise, damage to the device is possible. | A |
| EQ11 | 10 | Short-Circuited to Supply VCC1 | The equalization settings for HS mode do not work as expected. A degradation in performance can occur. Observe that the absolute maximum ratings for all pins of the device are met; otherwise, damage to the device is possible. | A |
| V1P8V1 | 11 | Short-Circuited to Ground (Side-1) | The device has no power (one of the supply inputs is shorted to ground). Observe that the absolute maximum ratings for all pins of the device are met; otherwise, damage to the device is possible. This short circuit potentially causes high current to flow between the two GND1 pins (pin 3 and pin 12); potentially damaging the device. | A |
| V1P8V1 | 11 | Open-Circuited | The device has no power (one of the supply inputs is floating). Observe that the absolute maximum ratings for all pins of the device are met; otherwise, damage to the device is possible. | B |
| V1P8V1 | 11 | Short-Circuited to Pin 12 (GND1) | The device has no power (one of the supply inputs is shorted to ground). Observe that the absolute maximum ratings for all pins of the device are met; otherwise, damage to the device is possible. This short circuit potentially causes high current to flow between the two GND1 pins (pin 3 and pin 12); potentially damaging the device. | A |
| V1P8V1 | 11 | Short-Circuited to Supply VBUS1 | This short circuit can potentially damage the device as the 1.8V domain circuits get exposed to voltages above the absolute maximum ratings of the circuit. | A |
| V1P8V1 | 11 | Short-Circuited to Supply VCC1 | The device continues to function as expected if the voltage on VCC1 is within the absolute maximum ratings for V1P8V1; otherwise, damage to the device is possible. | A |
| GND1 | 12 | Short-Circuited to Ground (Side-1) | The device continues to function as expected. Normal operation. | D |
| GND1 | 12 | Open-Circuited | The device receives return ground through pin 3 (GND1). Normal operation. | D |
| GND1 | 12 | Short-Circuited to Pin 13 (CDPENZ1) | The device falsely advertises CDP on the UD+ and UD- pins. | B |
| GND1 | 12 | Short-Circuited to Supply VBUS1 | The device has no power (one of the supply inputs is shorted to ground). Observe that the absolute maximum ratings for all pins of the device are met; otherwise, damage to the device is possible. This short circuit potentially causes high current to flow between the two GND1 pins (pin 3 and pin 12); potentially damaging the device. | A |
| GND1 | 12 | Short-Circuited to Supply VCC1 | The device has no power (one of the supply inputs is shorted to ground). Observe that the absolute maximum ratings for all pins of the device are met; otherwise, damage to the device is possible. This short circuit potentially causes high current to flow between the two GND1 pins (pin 3 and pin 12); potentially damaging the device. | A |
| CDPENZ1 | 13 | Short-Circuited to Ground (Side-1) | The device can falsely advertise CDP on the UD+ and UD- pins. | B |
| CDPENZ1 | 13 | Open-Circuited | The device is unable to perform CDP advertising on the UD+ and UD- pins. | B |
| CDPENZ1 | 13 | Short-Circuited to Pin 14 (NC) | The device continues to function as expected. Normal operation. | D |
| CDPENZ1 | 13 | Short-Circuited to Supply VBUS1 | The device is unable to perform CDP advertising on the UD+ and UD- pins. | B |
| CDPENZ1 | 13 | Short-Circuited to Supply VCC1 | The device is unable to perform CDP advertising on the UD+ and UD- pins. | B |
| NC | 14 | Short-Circuited to Ground (Side-1) | The device continues to function as expected. Normal operation. | D |
| NC | 14 | Open-Circuited | The device continues to function as expected. Normal operation. | D |
| NC | 14 | Short-Circuited to Pin 15 (N/A) | Not applicable (N/A), corner pin. | N/A |
| NC | 14 | Short-Circuited to Supply VBUS1 | The device continues to function as expected if the voltage on VBUS1 is within the absolute maximum ratings for V3P3V1; otherwise, damage to the device is possible. | A |
| NC | 14 | Short-Circuited to Supply VCC1 | The device continues to function as expected if the voltage on VCC1 is within the absolute maximum ratings for V3P3V1; otherwise, damage to the device is possible. | A |
| NC | 15 | Short-Circuited to Ground (Side-2) | The device continues to function as expected. Normal operation. | D |
| NC | 15 | Open-Circuited | The device continues to function as expected. Normal operation. | D |
| NC | 15 | Short-Circuited to Pin 16 (CDPENZ2) | The device continues to function as expected. Normal operation. | D |
| NC | 15 | Short-Circuited to Supply VBUS2 | The device continues to function as expected if the voltage on VBUS2 is within the absolute maximum ratings for V3P3V2; otherwise, damage to the device is possible. | A |
| NC | 15 | Short-Circuited to Supply VCC2 | The device continues to function as expected if the voltage on VCC2 is within the absolute maximum ratings for V3P3V2; otherwise, damage to the device is possible. | A |
| CDPENZ2 | 16 | Short-Circuited to Ground (Side-2) | The device can falsely advertise CDP on the DD+ and DD- pins. | B |
| CDPENZ2 | 16 | Open-Circuited | The device is unable to perform CDP advertising on the DD+ and DD- pins. | B |
| CDPENZ2 | 16 | Short-Circuited to Pin 17 (GND2) | The device falsely advertises CDP on the DD+ and DD- pins. | B |
| CDPENZ2 | 16 | Short-Circuited to Supply VBUS2 | The device is unable to perform CDP advertising on the DD+ and DD- pins. | B |
| CDPENZ2 | 16 | Short-Circuited to Supply VCC2 | The device is unable to perform CDP advertising on the DD+ and DD- pins. | B |
| GND2 | 17 | Short-Circuited to Ground (Side-2) | The device continues to function as expected. Normal operation. | D |
| GND2 | 17 | Open-Circuited | The device receives return ground through pin 26 (GND2). Normal operation. | D |
| GND2 | 17 | Short-Circuited to Pin 18 (V1P8V2) | The device has no power (one of the supply inputs is shorted to ground). Observe that the absolute maximum ratings for all pins of the device are met; otherwise, damage to the device is possible. This short circuit potentially causes high current to flow between the two GND2 pins (pin 17 and pin 26); potentially damaging the device. | A |
| GND2 | 17 | Short-Circuited to Supply VBUS2 | The device has no power (one of the supply inputs is shorted to ground). Observe that the absolute maximum ratings for all pins of the device are met; otherwise, damage to the device is possible. This short circuit potentially causes high current to flow between the two GND2 pins (pin 17 and pin 26); potentially damaging the device. | A |
| GND2 | 17 | Short-Circuited to Supply VCC2 | The device has no power (one of the supply inputs is shorted to ground). Observe that the absolute maximum ratings for all pins of the device are met; otherwise, damage to the device is possible. This short circuit potentially causes high current to flow between the two GND2 pins (pin 17 and pin 26); potentially damaging the device. | A |
| V1P8V2 | 18 | Short-Circuited to Ground (Side-2) | The device has no power (one of the supply inputs is shorted to ground). Observe that the absolute maximum ratings for all pins of the device are met; otherwise, damage to the device is possible. This short circuit potentially causes high current to flow between the two GND2 pins (pin 17 and pin 26); potentially damaging the device. | A |
| V1P8V2 | 18 | Open-Circuited | The device has no power (one of the supply inputs is floating). Observe that the absolute maximum ratings for all pins of the device are met; otherwise, damage to the device is possible. | B |
| V1P8V2 | 18 | Short-Circuited to Pin 19 (EQ21) | The equalization settings for HS mode do not work as expected. A degradation in performance can occur. | C |
| V1P8V2 | 18 | Short-Circuited to Supply VBUS2 | This short circuit can potentially damage the device as the 1.8V domain circuits get exposed to voltages above the absolute maximum ratings of the circuits. | A |
| V1P8V2 | 18 | Short-Circuited to Supply VCC2 | The device continues to function as expected if the voltage on VCC2 is within the absolute maximum ratings for V1P8V2; otherwise, damage to the device is possible. | A |
| EQ21 | 19 | Short-Circuited to Ground (Side-2) | Equalization settings for HS mode do not work as expected. A degradation in performance can occur. | C |
| EQ21 | 19 | Open-Circuited | The equalization settings for HS mode do not work as expected. A degradation in performance can occur. | C |
| EQ21 | 19 | Short-Circuited to Pin 20 (EQ20) | The equalization settings for HS mode do not work as expected. A degradation in performance can occur. | C |
| EQ21 | 19 | Short-Circuited to Supply VBUS2 | The equalization settings for HS mode do not work as expected. A degradation in performance can occur. Observe that the absolute maximum ratings for all pins of the device are met; otherwise, damage to the device is possible. | A |
| EQ21 | 19 | Short-Circuited to Supply VCC2 | The equalization settings for HS mode do not work as expected. A degradation in performance can occur. Observe that the absolute maximum ratings for all pins of the device are met; otherwise, damage to the device is possible. | A |
| EQ20 | 20 | Short-Circuited to Ground (Side-2) | The equalization settings for HS mode do not work as expected. A degradation in performance can occur. | C |
| EQ20 | 20 | Open-Circuited | The equalization settings for HS mode do not work as expected. A degradation in performance can occur. | C |
| EQ20 | 20 | Short-Circuited to Pin 21 (DD+) | There is data corruption on DD+. Observe that the absolute maximum ratings for all pins of the device are met; otherwise, damage to the device is possible. | A |
| EQ20 | 20 | Short-Circuited to Supply VBUS2 | The equalization settings for HS mode do not work as expected. A degradation in performance can occur. Observe that the absolute maximum ratings for all pins of the device are met; otherwise, damage to the device is possible. | A |
| EQ20 | 20 | Short-Circuited to Supply VCC2 | The equalization settings for HS mode do not work as expected. A degradation in performance can occur. Observe that the absolute maximum ratings for all pins of the device are met; otherwise, damage to the device is possible. | A |
| DD+ | 21 | Short-Circuited to Ground (Side-2) | There is data corruption on DD+. Damage to the device is possible if DD+ is driven high for an extended period of time. | A |
| DD+ | 21 | Open-Circuited | The output state of DD+ is undetermined. Communication is corrupted. | B |
| DD+ | 21 | Short-Circuited to Pin 22 (DD-) | There is data corruption on DD+ and DD-. Damage to the device is possible if opposite polarity is driven on both pins for an extended period of time. Communication is corrupted. | A |
| DD+ | 21 | Short-Circuited to Supply VBUS2 | There is data corruption on DD+. Damage to the device is possible if DD+ is driven low for an extended period of time. | A |
| DD+ | 21 | Short-Circuited to Supply VCC2 | There is data corruption on DD+. Damage to the device is possible if DD+ is driven low for an extended period of time. | A |
| DD- | 22 | Short-Circuited to Ground (Side-2) | There is data corruption on DD-. Damage to the device is possible if DD- is driven high for an extended period of time. | A |
| DD- | 22 | Open-Circuited | The output state of DD- is undetermined. Communication is corrupted. | B |
| DD- | 22 | Short-Circuited to Pin 23 (V1OK) | There is data corruption on DD-. There is a potential path between supply and ground, which can lead to device damage. Observe that the absolute maximum ratings for all pins of the device are met; otherwise, damage to the device is possible. | A |
| DD- | 22 | Short-Circuited to Supply VBUS2 | There is data corruption on DD-. Damage to the device is possible if DD- is driven low for an extended period of time. | A |
| DD- | 22 | Short-Circuited to Supply VCC2 | There is data corruption on DD-. Damage to the device is possible if DD- is driven low for an extended period of time. | A |
| V1OK | 23 | Short-Circuited to Ground (Side-2) | There is a loss of the indication of the power condition of side one. This short circuit causes high current to flow between supply and ground; causing damage to the device. | A |
| V1OK | 23 | Open-Circuited | The device continues to function as expected. The indication that side 1 is powered up is not received. | D |
| V1OK | 23 | Short-Circuited to Pin 24 (VCC2) | This short circuit causes high current to flow between supply and ground during power-up; causing damage to the device. | A |
| V1OK | 23 | Short-Circuited to Supply VBUS2 | This short circuit causes high current to flow between supply and ground during power-up; causing damage to the device. | A |
| V1OK | 23 | Short-Circuited to Supply VCC2 | This short circuit causes high current to flow between supply and ground during power-up; causing damage to the device. | A |
| VCC2 | 24 | Short-Circuited to Ground (Side-2) | The device has no power (one of the supply inputs is shorted to ground). Observe that the absolute maximum ratings for all pins of the device are met; otherwise, damage to the device is possible. This short circuit potentially causes high current to flow between the two GND2 pins (pin 17 and pin 26); potentially damaging the device. | A |
| VCC2 | 24 | Open-Circuited | The device has no power (one of the supply inputs is open). If V1P8V2 connects to a power supply, the internal LDO can be damaged from the reverse current. Observe that the absolute maximum ratings for all pins of the device are met; otherwise, damage to the device is possible. | A |
| VCC2 | 24 | Short-Circuited to Pin 25 (V1P8V2) | The device continues to function as expected if the voltage on VCC2 is within the absolute maximum ratings for V1P8V2; otherwise, damage to the device is possible | A |
| VCC2 | 24 | Short-Circuited to Supply VBUS2 | The device continues to function as expected. Normal operation. | D |
| VCC2 | 24 | Short-Circuited to Supply VCC2 | The device continues to function as expected. Normal operation. | D |
| V1P8V2 | 25 | Short-Circuited to Ground (Side-2) | The device has no power (one of the supply inputs is shorted to ground). Observe that the absolute maximum ratings for all pins of the device are met; otherwise, damage to the device is possible. This short circuit potentially causes high current to flow between the two GND2 pins (pin 17 and pin 26); potentially damaging the device. | A |
| V1P8V2 | 25 | Open-Circuited | Internal LDO can supply V1P8V2 if 2.4V to 5.5V is connected on VCC2. However, the 1.8V output can have stability issues without proper external bypass capacitors. Otherwise, the device does not have the power to turn on, and there is a loss of functionality. | B |
| V1P8V2 | 25 | Short-Circuited to Pin 26 (GND2) | The device has no power (one of the supply inputs is shorted to ground). Observe that the absolute maximum ratings for all pins of the device are met; otherwise, damage to the device is possible. This short circuit potentially causes high current to flow between the two GND2 pins (pin 17 and pin 26); potentially damaging the device. | A |
| V1P8V2 | 25 | Short-Circuited to Supply VBUS2 | This short circuit can potentially damage the device as the 1.8V domain circuits get exposed to voltages above the absolute maximum ratings of the circuits. | A |
| V1P8V2 | 25 | Short-Circuited to Supply VCC2 | The device continues to function as expected if the voltage on VCC2 is within the absolute maximum ratings for V1P8V2; otherwise, damage to the device is possible. | A |
| GND2 | 26 | Short-Circuited to Ground (Side-2) | The device continues to function as expected. Normal operation. | D |
| GND2 | 26 | Open-Circuited | The device receives return ground through pin 17 (GND2). Normal operation. | D |
| GND2 | 26 | Short-Circuited to Pin 27 (V3P3V2) | The device has no power (one of the supply inputs is shorted to ground). Observe that the absolute maximum ratings for all pins of the device are met; otherwise, damage to the device is possible. This short circuit potentially causes high current to flow between the two GND2 pins (pin 17 and pin 26); potentially damaging the device. | A |
| GND2 | 26 | Short-Circuited to Supply VBUS2 | The device has no power (one of the supply inputs is shorted to ground). Observe that the absolute maximum ratings for all pins of the device are met; otherwise, damage to the device is possible. This short circuit potentially causes high current to flow between the two GND2 pins (pin 17 and pin 26); potentially damaging the device. | A |
| GND2 | 26 | Short-Circuited to Supply VCC2 | The device has no power (one of the supply inputs is shorted to ground). Observe that the absolute maximum ratings for all pins of the device are met; otherwise, damage to the device is possible. This short circuit potentially causes high current to flow between the two GND2 pins (pin17 and pin26); potentially damaging the device. | A |
| V3P3V2 | 27 | Short-Circuited to Ground (Side-2) | The device has no power (one of the supply inputs is shorted to ground). Observe that the absolute maximum ratings for all pins of the device are met; otherwise, damage to the device is possible. This short circuit potentially causes high current to flow between the two GND2 pins (pin 17 and pin 26); potentially damaging the device. | A |
| V3P3V2 | 27 | Open-Circuited | The internal LDO can supply V3P3V2 if 4.25V to 5.5V is connected on VBUS2. However, the 3.3V output can have stability issues without proper external bypass capacitors. Otherwise, the device does not have the power to turn on, and there is a loss of functionality. | B |
| V3P3V2 | 27 | Short-Circuited to Pin 28 (VBUS2) | The device continues to function as expected if the voltage on VBUS2 is within the absolute maximum ratings for V3P3V2; otherwise, damage to the device is possible. | A |
| V3P3V2 | 27 | Short-Circuited to Supply VBUS2 | The device continues to function as expected if the voltage on VBUS2 is within the absolute maximum ratings for V3P3V2; otherwise, damage to the device is possible. | A |
| V3P3V2 | 27 | Short-Circuited to Supply VCC2 | The device continues to function as expected if the voltage on VCC2 is within the absolute maximum ratings for V3P3V2; otherwise, damage to device is possible. | A |
| VBUS2 | 28 | Short-Circuited to Ground (Side-2) | The device has no power (one of the supply inputs is shorted to ground). Observe that the absolute maximum ratings for all pins of the device are met; otherwise, damage to the device is possible. This short circuit potentially causes high current to flow between the two GND2 pins (pin 17 and pin 26); potentially damaging the device. | A |
| VBUS2 | 28 | Open-Circuited | The device has no power (one of the supply inputs is open). If V3P3V2 connects to a power supply, the internal LDO can be damaged from the reverse current. Observe that the absolute maximum ratings for all pins of the device are met; otherwise, damage to the device is possible. | A |
| VBUS2 | 28 | Short-Circuited to Pin 1 (VBUS1) | Not applicable (N/A), corner pin. | N/A |
| VBUS2 | 28 | Short-Circuited to Supply VBUS2 | The device continues to function as expected. Normal operation. | D |
| VBUS2 | 28 | Short-Circuited to Supply VCC2 | The device continues to function as expected. Normal operation. | D |