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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 Ioff and power-up 3-state. The Ioff 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 VCC through a pullup resistor; the minimum value of the
resistor is determined by the current-sinking capability of the driver.
Product Specifications
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