1 Features

• Inputs are TTL-voltage compatible

• Latch-up performance exceeds 250 mA

per JESD 17

• Functional Safety Capable

– Documentation available to aid

safety system design

2 Applications

• Enable or disable a digital signal

• Controlling an indicator LED

• Debounce a switch

• Eliminate slow or noisy input signals

3 Description

The SN74AHCT125-Q1 devices are quadruple bus

buffer gates featuring independent line drivers with

3-state outputs. Each output is disabled when the

associated output-enable (OE) input is high. When

OE is low, the respective gate passes the data from

the A input to its Y output.

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.