Datasheet Texas Instruments TCA9554ADWR — 数据表

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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 3 Description
The TCA9554A is a 16-pin device that provides 8 bits
of general purpose parallel input-output (I/O)
expansion for the two-line bidirectional I2C bus (or
SMBus) protocol. The device can operate with a
power supply voltage ranging from 1.65 V to 5.5 V.
The device supports both 100-kHz (Standard-mode)
and 400-kHz (Fast-mode) clock frequencies. I/O
expanders such as the TCA9554A provide a simple
solution when additional I/Os are needed for
switches, sensors, push-buttons, LEDs, fans, and
other similar devices. 2 I C to Parallel Port Expander
Open-Drain Active-Low Interrupt Output
Operating Power-Supply Voltage Range of 1.65 V
to 5.5 V …