1 Features

• AEC-Q100 qualified for automotive applications:

– Device temperature grade 1: -40°C to +125°C

– Device HBM ESD classification level 2

– Device CDM ESD classification level C4B

• Available in wettable flank QFN (WBQA) package

• Operating range of 4.5 V to 5.5 V

• ±8-mA output drive at 5 V

• Inputs are TTL-voltage compatible

• Latch-up performance exceeds 250 mA per JESD

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2 Applications

• Enable or disable a digital signal

• Controlling an indicator LED

• Debounce a switch

• Eliminate slow or noisy input signals

3 Description

The SN74AHCT126-Q1 device is a quadruple bus

buffer gate featuring independent line drivers with

3-state outputs. Each output is disabled when the

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

is high, 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 GND through a

pulldown resistor; the minimum value of the resistor

is determined by the current-sourcing capability of the

driver.