1FEATURES

• 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 x 1.5mm RUG

uQFN package.