Datasheet Details
| Part number | PCA9554 |
|---|---|
| Manufacturer | onsemi |
| File Size | 160.07 KB |
| Description | 8-bit I2C and SMBus I/O Port |
| Datasheet |
 PCA9554 Datasheet
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General Description
The PCA9554 is a CMOS device that provides 8
bit parallel input/output port expansion for I2C and SMBus compatible applications.
This I/O expander provides a simple solution in applications where additional I/Os are needed: sensors, power switches, LEDs, pushbuttons, and fans.
Key Features
- an active low interrupt output which indicates to the system master that an input state has changed. The device’s extended addressing capability allows up to 8 devices to share the same bus. Features.
- 400 kHz I2C Bus Compatible (Note 1).
- 2.3 V to 5.5 V Operation.
- Low Standby Current.
- 5 V Tolerant I/Os.
- 8 I/O Pins that Default to Inputs at Power.
- up.
- High Drive Capability.
- Individual I/O Configuration.
- Polarity Inversi.