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TCA9554A
SCPS196E – DECEMBER 2010 – REVISED FEBRUARY 2017
TCA9554A Low
Voltage 8-Bit I2C and SMBus Low-Power I/O Expander With Interrupt Output and Configuration Registers
1 Features
•1 I2C to Parallel Port Expander • Open-Drain Active-Low Interrupt Output • Operating Power-Supply
Voltage Range of 1.
65 V
to 5.
5 V • 5-V Tolerant I/O Ports • 400-kHz Fast I2C Bus • Three Hardware Address Pins Allow up to Eight
Devices on the I2C/SMBus • Input and Output Configuration Register • Polarity Inversion Register • Internal Power-On Reset • Low Standby Current Consumption • Power-Up With All Channels Configured as I...