TCA6408

` Operating Power-Supply Voltage Range of 1.65 V to 5.5 V
` Allows Bidirectional Voltage-Level Translation and GPIO Expansion Between
1.8-V SCL/SDA and 1.8-V, 2.5-V,3.3-V, or 5-V P Port
2.5-V SCL/SDA and 1.8-V, 2.5-V,3.3-V, or 5-V P Port
3.3-V SCL/SDA and 1.8-V, 2.5-V, 3.3-V, or 5-V P Port
5-V SCL/SDA and 1.8-V, 2.5-V,3.3-V, or 5-V P Port
` I2C to Parallel Port Expander
` Low Standby Current Consumption of 1 mA
` Schmitt-Trigger Action Allows Slow Input Transition and Better Switching Noise Immunity at the SCL and SDA Inputs Vhys = 0.18 V Typ at 1.8 V
Vhys = 0.25 V Typ at 2.5 V
Vhys = 0.33 V Typ at 3.3 V
Vhys = 0.5 V Typ at 5 V
` 5-V Tolerant I/O Ports
` Active-Low Reset Input (RESET)
` Open-Drain Active-Low Interrupt Output (INT)
` 400-kHz Fast I<sup>2</sup>C Bus
` Input/Output Configuration Register
` Polarity Inversion Register
` Internal Power-On Reset
` 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)
200-V Machine Model (A115-A)
1000-V Charged-Device Model (C101)

This TCA6408 8-bit I/O expander for the two-line bidirectional bus (I2C) is designed to provide general-purpose remote I/O expansion for most microcontroller families via the I2C interface [serial clock (SCL) and serial data (SDA)].