Product details

Number of I/Os 5 Features 1-MHz maximum frequency, Single-wire protocol Supply voltage (Min) (V) 1.65 Supply voltage (Max) (V) 3.6 Addresses 1 Rating Catalog Frequency (Max) (kHz) 1000 Operating temperature range (C) -40 to 85
Number of I/Os 5 Features 1-MHz maximum frequency, Single-wire protocol Supply voltage (Min) (V) 1.65 Supply voltage (Max) (V) 3.6 Addresses 1 Rating Catalog Frequency (Max) (kHz) 1000 Operating temperature range (C) -40 to 85
X2QFN (RUG) 8 2 mm² 1.5 x 1.5
  • Operating Power-Supply Voltage Range of 1.65 V to 3.6 V
  • Five Independent Push-Pull Outputs
  • Single Input (DIN) Controls State of All Outputs
  • High-Current Drive Outputs Maximum Capability 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)
  • APPLICATIONS
    • Cell Phones
    • PDAs
    • Portable Media Players
    • MP3 Players
    • Portable Instrumentation

  • Operating Power-Supply Voltage Range of 1.65 V to 3.6 V
  • Five Independent Push-Pull Outputs
  • Single Input (DIN) Controls State of All Outputs
  • High-Current Drive Outputs Maximum Capability 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)
  • APPLICATIONS
    • Cell Phones
    • PDAs
    • Portable Media Players
    • MP3 Players
    • Portable Instrumentation

The TCA5405 is a 5-bit output expander controlled using a single wire input. This device is ideal for portable applications as it has a wide VCC range of 1.65V to 3.6 V. The TCA5405 uses a self-timed serial data protocol with a single data input driven by a master device synchronized to an internal clock of that device. During a Setup phase, the bit period is sampled, then the TCA5405 generates its own internal clock synchronized to that of the Master device to sample the input over a five-bit-period Data Transfer phase and writes the bit states on the parallel outputs after the last bit is sampled. The TCA5405 is available in an 8-pin 1.5mm × 1.5mm RUG uQFN package.

The TCA5405 is a 5-bit output expander controlled using a single wire input. This device is ideal for portable applications as it has a wide VCC range of 1.65V to 3.6 V. The TCA5405 uses a self-timed serial data protocol with a single data input driven by a master device synchronized to an internal clock of that device. During a Setup phase, the bit period is sampled, then the TCA5405 generates its own internal clock synchronized to that of the Master device to sample the input over a five-bit-period Data Transfer phase and writes the bit states on the parallel outputs after the last bit is sampled. The TCA5405 is available in an 8-pin 1.5mm × 1.5mm RUG uQFN package.

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Technical documentation

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Type Title Date
* Data sheet Low Voltage 5-Bit Self-Timed, Single-Wire Output Expander, TCA5405 datasheet 23 Mar 2011
Application note I2C Dynamic Addressing 25 Apr 2019
Application note Understanding the I2C Bus 30 Jun 2015
Application note Maximum Clock Frequency of I2C Bus Using Repeaters 15 May 2015
Application note I2C Bus Pull-Up Resistor Calculation 13 Feb 2015
User guide user guide for TCA7408EVM/TCA5405EVM 07 Dec 2011

Design & development

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Evaluation board

TCA7408-5405EVM — Evaluation module for TCA7408 and TCA5405

The TCA7408-5405EVM is designed to show the used of multiple TI products on a single evaluation board. It shows how the single-wire 5-bit output expander TCA5405 is used to generate LED blinking functions. The Single wire interface is implemented using a single GPIO port on the MSP430, and very (...)

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Simulation model

TCA5405 IBIS Model

SCPM021.ZIP (36 KB) - IBIS Model
Simulation tool

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 (...)
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 (...)
Design tool

I2C-DESIGNER — I2C designer tool

Use the I2C Designer tool to quickly resolve conflicts in addressing, voltage level and frequency in I2C based designs. Enter master and slave inputs to automatically generate an I2C tree or easily build a custom solution. This tool will help designers save time and comply with the I2C standard (...)
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