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.