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Low Voltage 5-Bit Self-Timed, Single-Wire Output Expander


Package | PIN: RUG | 8
Temp: I (-40 to 85)
Carrier: Cut Tape
Qty Price
1-9 $0.83
10-24 $0.74
25-99 $0.69
100-249 $0.60
250-499 $0.55
500-749 $0.47
750-999 $0.38
1000+ $0.35


  • 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)
    • Cell Phones
    • PDAs
    • Portable Media Players
    • MP3 Players
    • Portable Instrumentation

Texas Instruments  TCA5405RUGR

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.