TCA9554DWT
Active8-BIT 1.65- TO 5.5-V I2C/SMBUS I/O EXPANDER WITH INTERRUPT, WEAK PULL-UP & CONFIG REGISTERS
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TCA9554DWT
Active8-BIT 1.65- TO 5.5-V I2C/SMBUS I/O EXPANDER WITH INTERRUPT, WEAK PULL-UP & CONFIG REGISTERS
Technical Specifications
Parameters and characteristics for this part
| Specification | TCA9554DWT |
|---|---|
| Clock Frequency | 400 kHz |
| Features | POR |
| Interface | I2C |
| Interrupt Output | True |
| Mounting Type | Surface Mount |
| Number of I/O | 8 |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 °C |
| Output Type | Push-Pull |
| Package / Case | 16-SOIC |
| Package / Case [x] | 0.295 in |
| Package / Case [y] | 7.5 mm |
| Supplier Device Package | 16-SOIC |
| Voltage - Supply [Max] | 5.5 V |
| Voltage - Supply [Min] | 1.65 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 1.72 | |
| 10 | $ 1.54 | |||
| 25 | $ 1.46 | |||
| 100 | $ 1.24 | |||
| Digi-Reel® | 1 | $ 1.72 | ||
| 10 | $ 1.54 | |||
| 25 | $ 1.46 | |||
| 100 | $ 1.24 | |||
| Tape & Reel (TR) | 250 | $ 1.17 | ||
| 500 | $ 1.02 | |||
| 1250 | $ 0.85 | |||
| 2500 | $ 0.79 | |||
| 6250 | $ 0.76 | |||
| 12500 | $ 0.73 | |||
| Texas Instruments | SMALL T&R | 1 | $ 1.43 | |
| 100 | $ 1.10 | |||
| 250 | $ 0.81 | |||
| 1000 | $ 0.58 | |||
Description
General part information
TCA9554A Series
The TCA9554A is a 16-pin device that provides 8 bits of general purpose parallel input-output (I/O) expansion for the two-line bidirectional I2C bus (or SMBus) protocol. The device can operate with a power supply voltage ranging from 1.65 V to 5.5 V. The device supports both 100-kHz (Standard-mode) and 400-kHz (Fast-mode) clock frequencies. I/O expanders such as the TCA9554A provide a simple solution when additional I/Os are needed for switches, sensors, push-buttons, LEDs, fans, and other similar devices.
The features of the TCA9554A include an interrupt that is generated on theINTpin whenever an input port changes state. The A0, A1, and A2 hardware selectable address pins allow up to eight TCA9554A devices on the same I2C bus. The device can also be reset to its default sate by cycling the power supply and causing a power-on reset.
The TCA9554A is a 16-pin device that provides 8 bits of general purpose parallel input-output (I/O) expansion for the two-line bidirectional I2C bus (or SMBus) protocol. The device can operate with a power supply voltage ranging from 1.65 V to 5.5 V. The device supports both 100-kHz (Standard-mode) and 400-kHz (Fast-mode) clock frequencies. I/O expanders such as the TCA9554A provide a simple solution when additional I/Os are needed for switches, sensors, push-buttons, LEDs, fans, and other similar devices.
Documents
Technical documentation and resources
