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Texas Instruments TXB0108/TXB0108-Q1 8-Bit Voltage-Level Translator

Texas Instruments TXB0108/TXB0108-Q1 Bi-Directional Voltage-Level Shifter is an 8-bit non-inverting translator that uses two separate configurable power-supply rails. The A port is designed to track VCCA. VCCA accepts any supply voltage from 1.2V to 3.6V. The B port is designed to track VCCB. VCCB accepts any supply voltage from 1.65V to 5.5V. This feature allows for universal low-voltage bidirectional translation between any of the 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, and 5V voltage nodes. VCCA should not exceed VCCB.

When the output-enable (OE) input is low, all outputs are placed in the high-impedance state. The Texas Instruments TXB0108/TXB0108-Q1 is designed so that the OE input circuit is supplied by VCCA. This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down. To ensure the high-impedance state during power-up or power-down, OE should be tied to GND through a pulldown resistor. The minimum value of the resistor is determined by the current-sourcing capability of the driver. The TXB0108-Q1 devices are AEC-Q100 qualified for automotive applications.

Features

  • 1.2V to 3.6V on A Port and 1.65V to 5.5V on B Port (VCCA ≤ VCCB)
  • VCC Isolation Feature – If Either VCC Input Is at GND, All Outputs Are in the High-Impedance State
  • OE Input Circuit Referenced to VCCA
  • Low Power Consumption, 4μA Max ICC
  • Ioff Supports Partial-Power-Down Mode Operation
  • Latch-Up Performance Exceeds 100mA Per JESD 78, Class II
  • ESD Protection Exceeds JESD 22
    • A Port
      • 2000V Human-Body Model (A114-B)
      • 1000V Charged-Device Model (C101)
    • B Port
      • ±15kV Human-Body Model (A114-B)
      • ±8kV Human-Body Model (A114-B) (YZP Package Only)
      • 1000V Charged-Device Model (C101)

Applications

  • Handset
  • Smartphone
  • Tablet
  • Desktop PC

Typical Application Block Diagram

Block Diagram - Texas Instruments TXB0108/TXB0108-Q1 8-Bit Voltage-Level Translator

Development Tool

Texas Instruments TXB-EVM Evaluation Module

Supports the TXB auto bidirectional families for single, dual, four and eight channel devices.

Learn More關於Texas Instruments TXB-EVM Evaluation Module View Products與Texas Instruments TXB-EVM Evaluation Module相關
發佈日期: 2012-03-08 | 更新日期: 2025-05-07