Datasheet Details
| Part number | PCA9554 |
|---|---|
| Manufacturer | Texas Instruments |
| File Size | 1.61 MB |
| Description | Remote 8-Bit I2C AND SMBus I/O Expander |
| Datasheet |
 PCA9554 Datasheet
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General Description
This 8-bit I/O expander for the two-line bidirectional bus (I2C) is designed for 2.3-V to 5.5-V VCC operation.
It provides general-purpose remote I/O expansion for most microcontroller families via the I2C interface [serial clock (SCL), serial data (SDA)].
Key Features
- 1 I2C to Parallel Port Expander.
- Open-Drain Active-Low Interrupt Output.
- Operating Power-Supply Voltage Range of 2.3 V to 5.5 V.
- 5-V Tolerant I/Os.
- 400-kHz Fast I2C Bus.
- Three Hardware Address Pins Allow up to Eight Devices on the I2C/SMBus.
- Input/Output Configuration Register.
- Polarity Inversion Register.
- Internal Power-On Reset.
- Power-Up With All Channels Configured as Inputs.
- No Glitch On Power.