TCA9555

現行

具中斷、弱推拉和配置暫存器的 16 位元 1.65 至 5.5-V I2C/SMBus I/O 擴展器

立即訂購

產品規格表

document-pdfAcrobat TCA9555 Low-Voltage 16-Bit I2C and SMBus I/O Expander with Interrupt Output and Configuration Registers datasheet (Rev. E) (英文) PDF | HTML

TCA9555

現行

產品規格表

立即訂購

產品詳細資料

Number of I/Os

16

Features

Configuration registers, Interrupt pin

Addresses

8

Rating

Catalog

Frequency (max) (MHz)

0.4

Operating temperature range (°C)

-40 to 85

Number of I/Os

16

Features

Configuration registers, Interrupt pin

Addresses

8

Rating

Catalog

Frequency (max) (MHz)

0.4

Operating temperature range (°C)

-40 to 85

SSOP (DB)

24

63.96 mm² (8.2 mm × 7.8 mm)

VQFN (RGE)

24

16 mm² (4 mm × 4 mm)

WQFN (RTW)

24

16 mm² (4 mm × 4 mm)

TSSOP (PW)

24

49.92 mm² (7.8 mm × 6.4 mm)

Low Standby-Current Consumption of 3.5 µA Maximum
I²C to Parallel Port Expander
Open-Drain Active-Low Interrupt Output
5-V Tolerant I/O Ports
Compatible With Most Microcontrollers
400-kHz Fast I²C Bus
Configurable Slave Address with 3 Address Pins
Polarity Inversion Register
Latched Outputs With High-Current Drive Capability for Directly Driving LEDs
Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
ESD Protection Exceeds JESD 22
- 2000-V Human-Body Model (A114-A)
- 1000-V Charged-Device Model (C101)

Low Standby-Current Consumption of 3.5 µA Maximum
I²C to Parallel Port Expander
Open-Drain Active-Low Interrupt Output
5-V Tolerant I/O Ports
Compatible With Most Microcontrollers
400-kHz Fast I²C Bus
Configurable Slave Address with 3 Address Pins
Polarity Inversion Register
Latched Outputs With High-Current Drive Capability for Directly Driving LEDs
Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
ESD Protection Exceeds JESD 22
- 2000-V Human-Body Model (A114-A)
- 1000-V Charged-Device Model (C101)

This 16-bit I/O expander for the two-line bidirectional bus (I²C) is designed for 1.65-V to 5.5-V V_CC operation. It provides general-purpose remote I/O expansion for most microcontroller families via the I²C interface.

The TCA9555 consists of two 8-bit Configuration (input or output selection), Input Port, Output Port, and Polarity Inversion (active high or active low operation) registers. At power on, the I/Os are configured as inputs. The system master can enable the I/Os as either inputs or outputs by writing to the I/O configuration bits. The data for each input or output is kept in the corresponding Input or Output register. The polarity of the Input Port register can be inverted with the Polarity Inversion register.

The TCA9555 is identical to the TCA9535, except for the inclusion of the internal I/O pull-up resistor, which pulls the I/O to a default high when configured as an input and undriven.

Three hardware pins (A0, A1, and A2) are used to program the I²C address, which allows up to eight TCA9555 devices to share the same I²C bus or SMBus. The fixed I²C address of the TCA9555 is the same as the PCF8575, PCF8575C, and PCF8574, allowing up to eight of these devices in any combination to share the same I²C bus or SMBus.

This 16-bit I/O expander for the two-line bidirectional bus (I²C) is designed for 1.65-V to 5.5-V V_CC operation. It provides general-purpose remote I/O expansion for most microcontroller families via the I²C interface.

The TCA9555 consists of two 8-bit Configuration (input or output selection), Input Port, Output Port, and Polarity Inversion (active high or active low operation) registers. At power on, the I/Os are configured as inputs. The system master can enable the I/Os as either inputs or outputs by writing to the I/O configuration bits. The data for each input or output is kept in the corresponding Input or Output register. The polarity of the Input Port register can be inverted with the Polarity Inversion register.

The TCA9555 is identical to the TCA9535, except for the inclusion of the internal I/O pull-up resistor, which pulls the I/O to a default high when configured as an input and undriven.

Three hardware pins (A0, A1, and A2) are used to program the I²C address, which allows up to eight TCA9555 devices to share the same I²C bus or SMBus. The fixed I²C address of the TCA9555 is the same as the PCF8575, PCF8575C, and PCF8574, allowing up to eight of these devices in any combination to share the same I²C bus or SMBus.

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開發板

IO-EXPANDER-EVM — IO-EXPANDER-EVM：I2C 和 SMBus IO 擴展器評估模組

IO 擴展器評估模組 (EVM) 可讓您評估 TI 的 SMBus 與 I2C IO 擴展器線路裝置產品組合。TCA6424A 和 TCA9539 都安裝在電路板上。24 針腳 TSSOP 元件封裝還支援 TCA6408A、TCA6416A、TCA9534、TCA9534A、TCA9535、TCA9538, TCA9554、TCA9554A 和 TCA9555。