TCA6418E Series

18-bit 1.65- to 3.6-V I2C/SMBus I/O expander with interrupt, reset & config registers

Catalog

18-bit 1.65- to 3.6-V I2C/SMBus I/O expander with interrupt, reset & config registers

Part	Features	Interrupt Output	Output Type	Current - Output Source/Sink [custom]	Current - Output Source/Sink [custom]	Operating Temperature [Max]	Operating Temperature [Min]	Package / Case	Mounting Type	Interface	Number of I/O	Supplier Device Package	Voltage - Supply [Min]	Voltage - Supply [Max]
Texas Instruments TCA6418EYFPR	Keypad Controller POR		Push-Pull	10 mA	25 mA	85 °C	-40 °C	25-XFBGA DSBGA	Surface Mount	I2C	18	25-DSBGA	1.65 V	3.6 V

Catalog

18-bit 1.65- to 3.6-V I2C/SMBus I/O expander with interrupt, reset & config registers

Key Features

• Operating Power-Supply Voltage Range of 1.65 V to 3.6 V18 GPIOs Configurable as Inputs or OutputsESD Protection Exceeds JESD 22 on Non-GPIO Pins2000-V Human Body Model (A114-A)1000-V Charged Device Model (C101)Low Standby (Idle) Current Consumption: 3 µASupports 1-MHz Fast Mode Plus I2C BusOpen-Drain Active-Low Interrupt Output, Asserted When Key is Pressedor Key is ReleasedSelectable Debounce Time of 50 µsSchmitt-Trigger Action Allows Slow Input Transition andBetter Switching Noise Immunity at the SCL and SDA Inputs:Typical Vhysat 1.8 V is 0.18 VLatch-Up Performance Exceeds 200 mA Per JESD 78, Class IIVery Small PackageWCSP (YFP): 2 mm × 2 mm; 0.4 mm pitchOperating Power-Supply Voltage Range of 1.65 V to 3.6 V18 GPIOs Configurable as Inputs or OutputsESD Protection Exceeds JESD 22 on Non-GPIO Pins2000-V Human Body Model (A114-A)1000-V Charged Device Model (C101)Low Standby (Idle) Current Consumption: 3 µASupports 1-MHz Fast Mode Plus I2C BusOpen-Drain Active-Low Interrupt Output, Asserted When Key is Pressedor Key is ReleasedSelectable Debounce Time of 50 µsSchmitt-Trigger Action Allows Slow Input Transition andBetter Switching Noise Immunity at the SCL and SDA Inputs:Typical Vhysat 1.8 V is 0.18 VLatch-Up Performance Exceeds 200 mA Per JESD 78, Class IIVery Small PackageWCSP (YFP): 2 mm × 2 mm; 0.4 mm pitch

Description

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. 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.