SN54ABT125 - Quadruple Bus Buffer Gates With 3- State Outputs

The ’ABT125 quadruple bus buffer gates feature independent line drivers with 3-state outputs. Each output is disabled when the associated output-enable (OE)\ input is high.

These devices are fully specified for hot-insertion applications using I_off and power-up 3-state. The I_off circuitry disables the outputs, preventing damaging current backflow through the devices when they are powered down. The power-up 3-state circuitry places the outputs in the high-impedance state during power up and power down, which prevents driver conflict.

To ensure the high-impedance state during power up or power down, OE\ should be tied to V_CC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

• Typical V_OLP (Output Ground Bounce)
     <1 V at V_CC = 5 V, T_A = 25°C
• High-Drive Outputs (–32-mA I_OH, 64-mA I_OL)
• I_off and Power-Up 3-State Support Hot Insertion
• Latch-Up Performance Exceeds 500 mA Per JEDEC Standard JESD-17
• ESD Protection Exceeds JESD 22
  • 2000-V Human-Body Model (A114-A)
  • 200-V Machine Model (A115-A)