Datasheet Summary
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8-bit I²C and SMBus I/O Port with Interrupt
Features
- 400kHz I²C bus patible
- 2.3V to 5.5V operation
- Low stand-by current
- 5V tolerant I/Os
- 8 I/O pins that default to inputs at power-up
- High drive capability
- Individual I/O configuration
- Polarity inversion register
- Active low interrupt output
- Internal power-on reset
- No glitch on power-up
- Noise filter on SDA/SCL inputs
- Cascadable up to 8 devices
- Industrial temperature range
- RoHS-pliant 16-lead SOIC and TSSOP, and 16-pad TQFN (4 x 4mm) packages
DESCRIPTION
The CAT9534 is an 8-bit parallel input/output port expander for I²C and SMBus patible applications. These I/O expanders...