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4-Bit Bidirectional Voltage-Level Shifter for Open-Drain and Push-Pull Applications

 

Features for the TXS0104E

 

    • No Direction-Control Signal Needed
    • Max 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)
    • No Power-Supply Sequencing Required – VCCA or VCCB Can Be Ramped First
    • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
    • ESD Protection Exceeds JESD 22
      • A Port
        • 2000-V Human-Body Model (A114-B)
        • 200-V Machine Model (A115-A)
        • 1000-V Charged-Device Model (C101)
      • B Port
        • 15-kV Human-Body Model (A114-B)
        • 200-V Machine Model (A115-A)
        • 1000-V Charged-Device Model (C101)
    • IEC 61000-4-2 ESD (B Port)
      • ±8-kV Contact Discharge
      • ±10-kV Air-Gap Discharge

 

Description for the TXS0104E

 

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 1.65 V to 3.6 V. VCCA must be less than or equal to VCCB. The B port is designed to track VCCB. VCCB accepts any supply voltage from 2.3 V to 5.5 V. This allows for low-voltage bidirectional translation between any of the 1.8-V, 2.5-V, 3.3-V, and 5-V voltage nodes.

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

The TXS0104E is designed so that the OE input circuit is supplied by VCCA.

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.