1. General description

The 74ABT125 is a quad buffer/line driver with 3-state outputs controlled by the output enable

inputs (nOE). A HIGH on nOE causes the outputs to assume a high impedance OFF-state. This

device is fully specified for partial power down applications using IOFF. The IOFF circuitry disables

the output, preventing the potentially damaging backflow current through the device when it is

powered down.

2. Features and benefits

• Supply voltage range from 4.5 V to 5.5 V

• BiCMOS high speed and output drive

• Direct interface with TTL levels

• Power-up 3-state

• Inputs are disabled during 3-state mode

• IOFF circuitry provides partial Power-down mode operation

• Latch-up protection exceeds 500 mA per JESD78B class II level A

• Quad bus interface

• 3-state buffers

• Live insertion and extraction permitted

• Output capability: HIGH -32 mA; LOW +64 mA

• ESD protection:

• HBM JESD22-A114F exceeds 2000 V

• MM JESD22-A115-A exceeds 200 V

• Multiple package options

• Specified from -40 °C to +85 °C