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TCA9539-Q1 - Low Voltage 16-Bit I2C and SMBUS Low-Power I/O Expander

General Description

The TCA9539-Q1 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 3.6 V.

Key Features

  • 1 Qualified for Automotive.

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Other Datasheets by Texas Instruments

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TCA9539 Low Voltage 16-Bit I2C and SMBUS Low-Power I/O Expander
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TCA9534A Low Voltage 8-Bit I2C and SMBUS Low-Power I/O Expander
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TCA9538 Low Voltage 8-Bit I2C and SMBus Low-Power I/O Expander

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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Product Folder Order Now Technical Documents Tools & Software Support & Community TCA9539-Q1 SCPS254C – JANUARY 2014 – REVISED DECEMBER 2018 TCA9539-Q1 Low Voltage 16-Bit I2C and SMBus Low-Power I/O Expander with Interrupt Output, Reset Pin, and Configuration Registers 1 Features •1 Qualified for Automotive Applications • I2C to Parallel Port Expander • Open-Drain Active-Low Interrupt Output • Active-Low Reset Input • 5-V Tolerant Input and Output Ports • Compatible With Most Microcontrollers • 400-kHz Fast I2C Bus • Polarity Inversion Register • Internal Power-on-Reset • No Glitch on Power Up • Address by Two Hardware Address Pins for Use of up to Four Devices • Latched Outputs for Directly Driving LEDs • Latch-Up Performance Exceeds 100-mA Per JESD 78, Class II • ESD Protection Exc