Datasheet Details
| Part number | PCAL9539A |
|---|---|
| Manufacturer | NXP Semiconductors |
| File Size | 2.70 MB |
| Description | Low-voltage 16-bit I2C-bus and SMBus low power I/O port |
| Datasheet |
 PCAL9539A Datasheet
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General Description
The PCAL9539A is a low-voltage 16-bit General Purpose Input/Output (GPIO) expander with interrupt and reset for I2C-bus/SMBus applications.
Key Features
- I2C-bus to parallel port expander.
- Operating power supply voltage range of 1.65 V to 5.5 V.
- Low standby current consumption:.
- 1.5 A (typical at 5 V VDD).
- 1.0 A (typical at 3.3 V VDD).
- Schmitt-trigger action allows slow input transition and better switching noise immunity at the SCL and SDA inputs.
- Vhys = 0.10 VDD (typical).
- 5 V tolerant I/Os.
- Active LOW reset input (RESET).
- Open-drain active LOW interrupt output (INT).
- 400 kHz Fast-mode.