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PCA9538
SCPS126F – SEPTEMBER 2006 – REVISED JUNE 2014
PCA9538 Remote 8-Bit I2C AND SMBus Low-power I/O Expander With Interrupt Output, Reset, and Configuration Registers
1 Features
•1 Low Standby Current Consumption of 1 μA Max • I2C to Parallel Port Expander • Open-Drain Active-Low Interrupt Output • Active-Low Reset Input • Operating Power-Supply
Voltage Range of 2.
3 V
to 5.
5 V • 5-V Tolerant I/O Ports • 400-kHz Fast I2C Bus • Two Hardware Address Pins Allow up to Four
Devices on the I2C/SMBus • Input/Output Configuration Register • Polarity Inversion Register • Power-Up With All Channels Configured ...