TCA5405

www.ti.com TCA5405 SCPS228 – MARCH 2011 Low Voltage 5-Bit Self-Timed, Single-Wire Output Expander Check for Samples: TCA5405 FEATURES 1 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 PIN # 1 2 3 4 5 6 7 8 RUG PACKAGE (TOP VIEW) 8 17 26 3 45 NAME VCC DIN GND Q0 Q1 Q2 Q3 Q4 COMMENTS Supply Voltage Data Input Ground GPO GPO GPO GPO GPO 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. TA –40°C to 85°C ORDERING INFO...