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TXE8116

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16-bit SPI bus I/O expander with interrupt, reset and I/O configurable registers

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Data sheet

TXE8116

ACTIVE
Data sheet Order now

Product details

Number of I/Os 16 Features Configuration registers, Fail-safe, Interrupt pin, Reset pin Supply voltage (min) (V) 1.65 Supply voltage (max) (V) 5.5 Rating Catalog Frequency (max) (MHz) 10 Operating temperature range (°C) -40 to 125
Number of I/Os 16 Features Configuration registers, Fail-safe, Interrupt pin, Reset pin Supply voltage (min) (V) 1.65 Supply voltage (max) (V) 5.5 Rating Catalog Frequency (max) (MHz) 10 Operating temperature range (°C) -40 to 125
VSSOP (DGS) 24 29.89 mm² 6.1 x 4.9
  • Operating supply voltage range of 1.65V to 5.5V
  • Low standby current consumption of 2.3µA typical
  • SPI SCLK Frequency
    • 10MHz from 3.3V to 5.5V
    • 5MHz from 1.65V to 5.5V
  • Active-low reset input (RESET)
  • 5V tolerant input and output ports
  • Buit-in fail-safe I/O feature
  • Open-drain active-low interrupt output (INT)
  • Individual I/O control and the glitch filter supported on all inputs of the GPIOs
  • SPI daisy-chain supported
  • I/O reading burst mode supported
  • I/O polarity inversion supported
  • Bus-hold feature to maintain the last I/O state
  • Latched outputs with high-current drive capability for directly driving LEDs
  • Latch-up performance exceeds 100mA per JESD 78, class II
  • ESD protection exceeds JESD 22
    • 2000V Human-body model (A114-A)
    • 1000V Charged-device model (C101)
  • Operating supply voltage range of 1.65V to 5.5V
  • Low standby current consumption of 2.3µA typical
  • SPI SCLK Frequency
    • 10MHz from 3.3V to 5.5V
    • 5MHz from 1.65V to 5.5V
  • Active-low reset input (RESET)
  • 5V tolerant input and output ports
  • Buit-in fail-safe I/O feature
  • Open-drain active-low interrupt output (INT)
  • Individual I/O control and the glitch filter supported on all inputs of the GPIOs
  • SPI daisy-chain supported
  • I/O reading burst mode supported
  • I/O polarity inversion supported
  • Bus-hold feature to maintain the last I/O state
  • Latched outputs with high-current drive capability for directly driving LEDs
  • Latch-up performance exceeds 100mA per JESD 78, class II
  • ESD protection exceeds JESD 22
    • 2000V Human-body model (A114-A)
    • 1000V Charged-device model (C101)

The TXE81XX devices provide general purpose parallel input/output (I/O) expansion for the four wire Serial Peripheral Interface (SPI) protocol and is designed for 1.65V to 5.5V VCC operation.

The device supports 10MHz from 3.3V to 5.5V and 5MHz from 1.65V to 5.5V. I/O expanders, such as the TXE81XX, provide a simple solution when additional I/Os are needed for switches, sensors, push-buttons, LEDs, and fans.

The TXE81XX devices have I/O ports, which include additional features designed to enhance the I/O performance in terms of speed, power consumption, and flexibility. The additional features are: enable/disable pull-up and pull-down resistors, latchable inputs, maskable interrupt, interrupt status register, programmable open-drain or push-pull outputs, and a fail-safe register mode which is enabled by the FAIL-SAFE pin.

The TXE81XX devices provide general purpose parallel input/output (I/O) expansion for the four wire Serial Peripheral Interface (SPI) protocol and is designed for 1.65V to 5.5V VCC operation.

The device supports 10MHz from 3.3V to 5.5V and 5MHz from 1.65V to 5.5V. I/O expanders, such as the TXE81XX, provide a simple solution when additional I/Os are needed for switches, sensors, push-buttons, LEDs, and fans.

The TXE81XX devices have I/O ports, which include additional features designed to enhance the I/O performance in terms of speed, power consumption, and flexibility. The additional features are: enable/disable pull-up and pull-down resistors, latchable inputs, maskable interrupt, interrupt status register, programmable open-drain or push-pull outputs, and a fail-safe register mode which is enabled by the FAIL-SAFE pin.
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* Data sheet TXE81XX 16-Bit and 24-Bit SPI Bus I/O Expander with Interrupt Output, Reset Input, and I/O Configuration Registers datasheet PDF | HTML 18 Aug 2025
Application brief Understanding the SPI Bus PDF | HTML 22 Aug 2025
EVM User's guide TXE81XXEVM User's Guide PDF | HTML 07 Aug 2025

Design & development

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Evaluation board

IO-EXP-ADAPTER-EVM — IO expander adapter evaluation module

The IO-EXP-ADAPTER-EVM is an evaluation module that can break away into four separate PCBs for testing and debugging. The IO-EXP-ADAPTER-EVM supports many package types from our I2C and SPI IO expander portfolio.
User guide: PDF | HTML
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Evaluation board

TXE81XXEVM — TXE81XX evaluation module

The TXE81XXEVM allows the evaluation of the TXE81XX family of SPI I/O expanders. This EVM supports TXE8116, TXE8124, and TXE8148 (16-bit, 24-bit, and 48-bit, respectively) in the leaded package type DGS(24 and 32) and DGG (56). The EVM provides access to many test points and headers to accompany (...)

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PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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Simulation tool

TINA-TI — SPICE-based analog simulation program

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
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