TCA9539

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TCA9539 SCPS202C – OCTOBER 2009 – REVISED MAY 2016 TCA9539 Low Voltage 16-Bit I2C and SMBus Low-Power I/O Expander with Interrupt Output, Reset Pin, and Configuration Registers 1 Features 1 I2C to Parallel Port Expander Low Standby-Current Consumption Open-Drain Active-Low Interrupt Output Active-Low Reset Input 5-V Tolerant I/O Ports Compatible With Most Microcontrollers 400-kHz Fast I2C Bus Input and Output Configuration Register Polarity Inversion Register Internal Power-on Reset No Glitch on Power Up Noise Filter on SCL and SDA Inputs Address by Two Hardware Address Pins for Use of up to Four Devices Latched Outputs With High-Current Drive 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, smartphones Industrial Automation I2C GPIO Expansion 3 Description The TCA9539 is a 24-pin device that provides 16 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 (VCC) range from 1.65 V to 5.5 V. The device supports 100-kHz (I2C Standard mode) and 400-kHz (I2C Fast mode) clock frequencies. I/O expanders s...