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TCA6418E

ACTIVE

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

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Data sheet

TCA6418E

ACTIVE
Data sheet Order now

Product details

Number of I/Os 18 Features 1-MHz maximum frequency, Configuration registers, Interrupt pin, Reset pin Addresses 1 Rating Catalog Frequency (max) (MHz) 1 Operating temperature range (°C) -40 to 85
Number of I/Os 18 Features 1-MHz maximum frequency, Configuration registers, Interrupt pin, Reset pin Addresses 1 Rating Catalog Frequency (max) (MHz) 1 Operating temperature range (°C) -40 to 85
DSBGA (YFP) 25 6.75999999999999792000000000000016 mm² (— mm × — mm)
  • 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
  • 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

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.

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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet I2C Controlled 18 Channel GPIO Expander datasheet Sep 5, 2012
Application note Understanding Transient Drive Strength vs. DC Drive Strength in Level-Shifters (Rev. A) PDF | HTML Jul 3, 2024
Application note I2C Dynamic Addressing Apr 25, 2019
Application note Choosing the Correct I2C Device for New Designs PDF | HTML Sep 7, 2016
Application note Understanding the I2C Bus PDF | HTML Jun 30, 2015
Application note Maximum Clock Frequency of I2C Bus Using Repeaters May 15, 2015
Application note I2C Bus Pull-Up Resistor Calculation PDF | HTML Feb 13, 2015

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