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1-Bit Bidirectional Voltage-Level Shifter for Open-Drain and Push-Pull Application


Features for the TXS0101


  • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
  • ESD Protection Exceeds JESD 22
    • A Port
      • 2500 V Human-Body Model (A114-B)
      • 200 V Machine Model (A115-A)
      • 1500 V Charged-Device Model (C101)
    • B Port
      • 8 kV Human-Body Model (A114-B)
      • 200 V Machine Model (A115-A)
      • 1500 V Charged-Device Model (C101)
  • No Direction-Control Signal Needed
  • Maximum Data Rates
    • 24 Mbps (Push Pull)
    • 2 Mbps (Open Drain)
  • Available in the Texas Instruments NanoFree™ Package
  • 1.65 V to 3.6 V on A port and 2.3 V to 5.5 V on B port (VCCA  ≤ VCCB)
  • VCC Isolation Feature – If Either VCC Input Is at GND, Both Ports Are in the High-Impedance State
  • No Power-Supply Sequencing Required – Either VCCA or VCCB Can be Ramped First
  • Ioff Supports Partial-Power-Down Mode Operation


Description for the TXS0101


This one-bit non-inverting translator uses two separate configurable power-supply rails.The A port is designed to track VCCA. VCCA acceptsany supply voltage from 1.65 V to 3.6 V. The B port is designed to trackVCCB. VCCA must be less than or equal toVCCB. VCCB accepts any supply voltage from 2.3 V to5.5 V. This allows for low voltage bidirectional translation between any of the 1.8 V, 2.5 V, 3.3V, and 5 V voltage nodes.

When the output-enable (OE) input is low, all outputs are placed in the high-impedancestate.

To ensure the high-impedance state during power up or power down, OE should be tied toGND through a pull-down resistor; the minimum value of the resistor is determined by thecurrent-sourcing capability of the driver.