TCA9554

Product Folder Order Now Technical Documents Tools & Software Support & Community TCA9554 SCPS233E – MARCH 2012 – REVISED FEBRUARY 2017 TCA9554 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 Inputs No Glitch on Power Up Noise Filter on SCL/SDA Inputs Latched Outputs With High-Current Drive Maximum Capability for Directly Driving LEDs Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II ESD Protection Exceeds JESD 22 – 2000-V Human-Body Model (A114-A) – 1000-V Charged-Device Model (C101) 2 Applications Servers Routers (Telecom Switching Equipment) Personal Computers Personal Electronics (for example: Gaming Consoles) Industrial Automation Products With GPIO-Limited Processors 3 Description The TCA9554 is a 16-pin device that provides 8 bits of general purpose parallel input and 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 suppor...