SN74CB3Q3251

활성

3.3V, 8:1, 1채널 범용 FET 버스 스위치

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document-pdfAcrobat SN74CB3Q3251 1-of-8 FET Multiplexer/Demultiplexer 2.5V-3.3V Low-voltage High-bandwidth BUS Switch datasheet (Rev. B) (영어) PDF | HTML

SN74CB3Q3251

활성

데이터 시트

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제품 상세 정보

Protocols

Analog

Configuration

8:1

Number of channels

1

Bandwidth (MHz)

500

Ron (typ) (mΩ)

3500

Input/output voltage (min) (V)

0

Input/output voltage (max) (V)

5.5

Supply current (typ) (µA)

600

Operating temperature range (°C)

-40 to 85

ESD CDM (kV)

1

Input/output continuous current (max) (mA)

64

COFF (typ) (pF)

3.5

CON (typ) (pF)

15

OFF-state leakage current (max) (µA)

1

Ron (max) (mΩ)

11000

VIH (min) (V)

1.7

VIL (max) (V)

0.8

Rating

Catalog

Protocols

Analog

Configuration

8:1

Number of channels

1

Bandwidth (MHz)

500

Ron (typ) (mΩ)

3500

Input/output voltage (min) (V)

0

Input/output voltage (max) (V)

5.5

Supply current (typ) (µA)

600

Operating temperature range (°C)

-40 to 85

ESD CDM (kV)

1

Input/output continuous current (max) (mA)

64

COFF (typ) (pF)

3.5

CON (typ) (pF)

15

OFF-state leakage current (max) (µA)

1

Ron (max) (mΩ)

11000

VIH (min) (V)

1.7

VIL (max) (V)

0.8

Rating

Catalog

TSSOP (PW)

16

32 mm² (5 mm × 6.4 mm)

SSOP (DBQ)

16

29.4 mm² (4.9 mm × 6 mm)

TVSOP (DGV)

16

23.04 mm² (3.6 mm × 6.4 mm)

VQFN (RGY)

16

14 mm² (4 mm × 3.5 mm)

High-bandwidth data path (up to 500MHz)
Equivalent to IDTQS3VH251 device
5V tolerant I/Os with device powered up or powered down
Low and flat ON-state resistance (ron) characteristics over operating range (ron = 4Ω Typ)
Rail-to-rail switching on data I/O ports
- 0 to 5V switching with 3.3V VCC
- 0 to 3.3V switching with 2.5V VCC
Bidirectional data flow with near-zero propagation delay
Low input/output capacitance minimizes loading and signal distortion (Cio(OFF) = 3.5 pF Typ)
Fast switching frequency (fOE or fS = 20 MHz Max). For additional information regarding the performance characteristics of the CB3Q family, refer to the TI application note, CBT-C, CB3T, and CB3Q Signal-Switch Families.
Data and controlinputs provide undershoot clamp diodes
Low power consumption (ICC = 1mA Typ)
VCC operating range from 2.3V to 3.6V
Data I/Os support 0 to 5V signaling levels (0.8V, 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, 5V)
Control inputs can be driven by TTL or 5V/3.3V CMOS outputs
Ioff supports partial-power-down mode operation
Latch-Up performance exceeds 100mA per JESD 78, class II
ESD performance tested per JESD 22
- 2000V human-body model (A114B, Class II)
- 1000V charged-device model (C101)
Supports both digital and analog applications: PCI interface, differential signal interface, memory interleaving, bus isolation, low-distortion signal gating

High-bandwidth data path (up to 500MHz)
Equivalent to IDTQS3VH251 device
5V tolerant I/Os with device powered up or powered down
Low and flat ON-state resistance (ron) characteristics over operating range (ron = 4Ω Typ)
Rail-to-rail switching on data I/O ports
- 0 to 5V switching with 3.3V VCC
- 0 to 3.3V switching with 2.5V VCC
Bidirectional data flow with near-zero propagation delay
Low input/output capacitance minimizes loading and signal distortion (Cio(OFF) = 3.5 pF Typ)
Fast switching frequency (fOE or fS = 20 MHz Max). For additional information regarding the performance characteristics of the CB3Q family, refer to the TI application note, CBT-C, CB3T, and CB3Q Signal-Switch Families.
Data and controlinputs provide undershoot clamp diodes
Low power consumption (ICC = 1mA Typ)
VCC operating range from 2.3V to 3.6V
Data I/Os support 0 to 5V signaling levels (0.8V, 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, 5V)
Control inputs can be driven by TTL or 5V/3.3V CMOS outputs
Ioff supports partial-power-down mode operation
Latch-Up performance exceeds 100mA per JESD 78, class II
ESD performance tested per JESD 22
- 2000V human-body model (A114B, Class II)
- 1000V charged-device model (C101)
Supports both digital and analog applications: PCI interface, differential signal interface, memory interleaving, bus isolation, low-distortion signal gating

The SN74CB3Q3251 is a high-bandwidth FET bus switch utilizing a charge pump to elevate the gate voltage of the pass transistor, providing a low and flat ON-state resistance (ron). The low and flat ON-state resistance allows for minimal propagation delay and supports rail-to-rail switching on the data input/output (I/O) ports. The device also features low data I/O capacitance to minimize capacitive loading and signal distortion on the data bus. Specifically designed to support high-bandwidth applications, the SN74CB3Q3251 provides an optimized interface solution ideally suited for broadband communications, networking, and data-intensive computing systems.

The SN74CB3Q3251 is a 1-of-8 multiplexer/demultiplexer with a single output-enable ( OE) input. The select (S0, S1, S2) inputs control the data path of the multiplexer/demultiplexer. When OE is low, the multiplexer/demultiplexer is enabled, and the A port is connected to the B port, allowing bidirectional data flow between ports. When OE is high, the multiplexer/demultiplexer is disabled, and a high-impedance state exists between the A and B ports.

This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry prevents damaging current backflow through the device when it is powered down. The device has isolation during power off.

To ensure the high-impedance state during power up or power down, OE must be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

The SN74CB3Q3251 is a high-bandwidth FET bus switch utilizing a charge pump to elevate the gate voltage of the pass transistor, providing a low and flat ON-state resistance (ron). The low and flat ON-state resistance allows for minimal propagation delay and supports rail-to-rail switching on the data input/output (I/O) ports. The device also features low data I/O capacitance to minimize capacitive loading and signal distortion on the data bus. Specifically designed to support high-bandwidth applications, the SN74CB3Q3251 provides an optimized interface solution ideally suited for broadband communications, networking, and data-intensive computing systems.

The SN74CB3Q3251 is a 1-of-8 multiplexer/demultiplexer with a single output-enable ( OE) input. The select (S0, S1, S2) inputs control the data path of the multiplexer/demultiplexer. When OE is low, the multiplexer/demultiplexer is enabled, and the A port is connected to the B port, allowing bidirectional data flow between ports. When OE is high, the multiplexer/demultiplexer is disabled, and a high-impedance state exists between the A and B ports.

This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry prevents damaging current backflow through the device when it is powered down. The device has isolation during power off.

To ensure the high-impedance state during power up or power down, OE must be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

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4개 모두 보기

상위 문서	유형	직함	형식 옵션	날짜
*	데이터 시트	SN74CB3Q3251 1-of-8 FET Multiplexer/Demultiplexer 2.5V-3.3V Low-voltage High-bandwidth BUS Switch datasheet (Rev. B)	PDF \| HTML	2026. 8. 21
	애플리케이션 노트	Selecting the Correct Texas Instruments Signal Switch (Rev. E)	PDF \| HTML	2022. 6. 2
	애플리케이션 노트	Multiplexers and Signal Switches Glossary (Rev. B)	PDF \| HTML	2021. 12. 1
	Application brief	Eliminate Power Sequencing with Powered-off Protection Signal Switches (Rev. C)	PDF \| HTML	2021. 1. 6

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