TCA6418E Datasheet PDF - TI

●The TCA6418E is a 18 channel GPIO expansion device with integrated ESD protection. It can operate from 1.65 V to 3.6 V and has 18 general purpose inputs/outputs (GPIO) that can be used via the I2C interface [serial clock (SCL), serial data (SDA)].

●The major benefit of this device is it frees up the processor from having to individually monitor changes in multiple inputs and also frees up the GPIOs on the processor to drive other outputs.. This provides power and bandwidth savings. The TCA6418E is also ideal for usage with processors that have limited GPIOs.

● Operating Power-Supply Voltage Range of 1.65 V to 3.6 V

● 18 GPIOs Configurable as Inputs or Outputs

● ESD Protection Exceeds JESD 22 on Non-GPIO Pins

● 2000-V Human Body Model (A114-A)

● 1000-V Charged Device Model (C101)

● Low Standby (Idle) Current Consumption: 3 µA

● Supports 1-MHz Fast Mode Plus I2C Bus

● Open-Drain Active-Low Interrupt Output, Asserted When Key is Pressed

●or Key is Released

● Selectable Debounce Time of 50 µs

● Schmitt-Trigger Action Allows Slow Input Transition and

●Better Switching Noise Immunity at the SCL and SDA Inputs:

●Typical Vhys at 1.8 V is 0.18 V

● Latch-Up Performance Exceeds 200 mA Per JESD 78, Class II

● Very Small Package

● WCSP (YFP): 2 mm × 2 mm; 0.4 mm pitch