PCAL9535A - NXP Semiconductors

PCAL9535A Low-voltage 16-bit I2C-bus I/O port

The PCAL9535A is a low-voltage 16-bit General Purpose Input/Output (GPIO) expander with interrupt and reset for I2C-bus/SMBus applications. NXP I/O expanders provide a simple solution when additional I/Os are needed while keeping interconnections to a minimum, for example, in ACPI power switches, sensors, push buttons, LEDs, fan control, etc. In addition to .

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
 Open-drain active LOW interrupt output (INT)
 400 kHz Fast-mode I2C-bus
 Internal power-on reset
 Power-up with all channels configured as inputs
 No glitch on power-up
 Latched outputs with 25 mA drive maximum capability for directly d.