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TCA9539-Q1

Part Number	TCA9539-Q1
Manufacturer	Texas Instruments
Description	Low Voltage 16-Bit I2C and SMBUS Low-Power I/O Expander
Published	Dec 22, 2020
Detailed Description	Product Folder Order Now Technical Documents Tools & Software Support & Community TCA9539-Q1 SCPS254C – JANUARY 201...
Datasheet	TCA9539-Q1 PDF File

Overview

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 Exceeds JESD 22 – 2000-V Human-Body Model (A114-A) – 1000-V Charged-Device Model (C101) 3 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.
The device supports 100-kHz (I2C Standard mode) and 400-kHz (I2C Fast mode) clock frequencies.
I/O expanders such as the TCA9539-Q1 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-Q1 include an interrupt that is generated on the INT pin whenever an input port changes state.
The A0 and A1 hardware selectable address pins allow up to four TCA9539-Q1 devices on the same I2C bus.
The device can be reset to its default state by cycling the power supply and causing a power-on-reset.
Also, the TCA9539-Q1 has a hardware RESET pin that can be used to reset the device to its default state.
The TCA9539-Q1 I2C I/O expander is qualified for automotive applications.
2 Applications • Automotive infotainment, Advanced Driver Assi...

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

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