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Home > Embedded ICs > Embedded - Microcontroller Unit (MCU) > TCA9539RTWR
Texas Instruments

TCA9539RTWR

TCA9539RTWR

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TCA9539RTWR Overview

The TCA9539 is a 24-pin device that provides 16 bits of general purpose parallel input and output (I/O) expansion for the two-line bidirectional I2C bus (or SMBus protocol). The device can operate with a power supply voltage (VCC) range from 1.65 V to 5.5 V. The device supports 100-kHz (I2C Standard mode) and 400-kHz (I2C Fast mode) clock frequencies. I/O expanders such as the TCA9539 provide a simple solution when additional I/Os are needed for switches, sensors, push-buttons, LEDs, fans, and other similar devices.

The features of the TCA9539 include an interrupt that is generated on the RESET pin that can be used to reset the device to its default state.

Features

  • I2C to Parallel Port Expander
  • Low Standby-Current Consumption
  • Open-Drain Active-Low Interrupt Output
  • Active-Low Reset Input
  • 5-V Tolerant I/O Ports
  • Compatible With Most Microcontrollers
  • 400-kHz Fast I2C Bus
  • Input and Output Configuration Register
  • Polarity Inversion Register
  • Internal Power-on Reset
  • No Glitch on Power Up
  • Noise Filter on SCL and SDA Inputs
  • Address by Two Hardware Address Pins for Use of up to Four Devices
  • Latched Outputs With High-Current Drive Capability for Directly Driving LEDs
  • Latch-Up Performance Exceeds 100mA Per JESD78, ClassII
  • ESD Protection Exceeds JESD22
    • 2000-V Human-Body Model (A114-A)
    • 1000-V Charged-Device Model (C101)

Specifications

Circuit Diagram

TCA9539RTWR

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