TI TCA6418EYFPR

The TCA6418E is an 18-channel GPIO expansion device with integrated ESD protection. It can operate at a power supply voltage ranging from 1.65V to 3.6V and features 18 general-purpose input/output (GPIO) interfaces that can be accessed via the I²C interface [serial clock (SCL), serial data (SDA)]. The main advantage of this device is that it frees the processor from having to individually monitor changes in multiple inputs and also allows the GPIOs on the processor to drive other outputs. This saves power consumption and bandwidth. The TCA6418E is also an ideal choice for applications with a limited number of GPIO usages.

• Operating supply voltage range: 1.65V to 3.6V
• 18 GPIOs configurable as inputs or outputs
• ESD protection on non-GPIO pins exceeding JESD 22 standard
  • 2000V Human Body Model (A114-A)
  • 1000V Charged Device Model (C101)
• Low standby (idle) current consumption
• Supports 1MHz Fast Mode Plus I²C bus
• Open-drain active-low interrupt output, asserted when a key is pressed or released
• Selectable 50μs debounce time
• Schmitt trigger operation on SCL and SDA inputs for slow input transitions and improved noise immunity: typical Vhys = 0.18V at 1.8V
• Latch-up performance exceeding 200mA (compliant with JESD 78, Class II)
• Ultra-small Wafer-Level Chip-Scale Package (WCSP) (YFP): 2mm × 2mm; 0.4mm solder ball pitch

• Smartphones
• PDAs
• GPS devices
• MP3 players
• Digital cameras