双向电压转换器

TXB0104

描述

This 4-bit non-inverting translator uses two separate configurable power-supply rails. The A port is designed to track VCCA. VCCA accepts any supply voltage from 1.2 V to 3.6 V. The B port is designed to track VCCB. VCCB accepts any supply voltage from 1.65 V to 5.5 V. This allows for universal low-voltage bidirectional translation between any of the 1.2-V, 1.5-V, 1.8-V, 2.5-V, 3.3-V, and 5-V voltage nodes. VCCA should not exceed VCCB.

When the output-enable (OE) input is low, all outputs are placed in the high-impedance state. 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 TXB0104 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.

特性

• 1.2 V to 3.6 V on A Port and 1.65 V to 5.5 V 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, 5-µA Max ICC
• Ioff Supports Partial-Power-Down Mode Operation
• 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)
  • 1500-V Charged-Device Model (C101)
• B Port
  • ±15-kV Human-Body Model (A114-B)
  • 1500-V Charged-Device Model (C101)