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TCA5405
  • TCA5405

TCA5405

ACTIVE

5-bit self-timed 1.65- to 3.6-V single-wire output expander

Texas Instruments TCA5405 Product Info

1 April 2026 4

Parameters

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) (MHz)

1

Operating temperature range (°C)

-40 to 85

Package

X2QFN (RUG)-8-2.25 mm² 1.5 x 1.5

Features

  • 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

Description

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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