TCA9539-Q1 Automotive Low-Voltage 16-Bit I2C and SMBus Low-Power I/O Expander | TI.com

TCA9539-Q1 (ACTIVE) Automotive Low-Voltage 16-Bit I2C and SMBus Low-Power I/O Expander

 

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.

Features

  • 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)

All trademarks are the property of their respective owners.

Parametrics

Compare all products in I2C general-purpose I/Os (GPIOs) Email Download to Excel
Part number Order Number of I/Os VCC (Min) (V) VCC (Max) (V) Frequency (Max) (kHz) Features Addresses Rating Operating temperature range (C) Package Group
TCA9539-Q1 Order now 16     1.65     3.6     400     Configuration registers
Interrupt pin
Reset pin    
4     Automotive     -40 to 125     TSSOP | 24    
TCA6408A Order now 8     1.65     5.5     400     Adjustable I/O level
Configuration registers
Interrupt pin
Reset pin    
2     Catalog     -40 to 85     TSSOP | 16
UQFN | 16
VQFN | 16    
TCA6408A-Q1 Order now 8     1.65     3.6     400     Adjustable I/O level
Configuration registers
Interrupt pin
Reset pin    
2     Automotive     -40 to 125     TSSOP | 16    
TCA9538 Order now 8     1.65     5.5     400     Configuration registers
Interrupt pin
Reset pin    
4     Catalog     -40 to 85     SSOP | 16
TSSOP | 16    
TCA9539 Order now 16     1.65     5.5     400     Configuration registers
Interrupt pin
Reset pin    
4     Catalog     -40 to 85     TSSOP | 24
VQFN | 24
WQFN | 24