Datasheet Details
| Part number | TCA9554 |
|---|---|
| Manufacturer | Texas Instruments |
| File Size | 2.33 MB |
| Description | Low Voltage 8-Bit I2C and SMBus Low-Power I/O Expander |
| Datasheet |
 TCA9554 Datasheet
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General Description
The TCA9554 is a 16-pin device that provides 8 bits of general purpose parallel input and 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.
Key Features
- 1 I2C to Parallel Port Expander.
- Open-Drain Active-Low Interrupt Output.
- Operating Power-Supply Voltage Range of 1.65 V to 5.5 V.
- 5-V Tolerant I/O Ports.
- 400-kHz Fast I2C Bus.
- Three Hardware Address Pins Allow up to Eight Devices on the I2C/SMBus.
- Input and Output Configuration Register.
- Polarity Inversion Register.
- Internal Power-On Reset.
- Low Standby Current Consumption.
- Power-Up With All Channel.