74AHCT244APWJ

Buffers, Drivers, Receivers, Transceivers Overview

The Nexperia 74AHCT244APWJ is an octal buffer and line driver featuring three-state outputs, designed for operation within a supply voltage range of 4.5 V to 5.5 V. It incorporates TTL-compatible inputs with Schmitt-trigger action to tolerate slow signal transitions. The device includes dedicated IOFF circuitry to support partial power-down modes by disabling outputs and preventing backflow current. It provides two independent output enable controls (1OE and 2OE), each managing four outputs. The component is specified for ambient temperatures ranging from -40 °C to +125 °C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• TTL-compatible input levels ensure direct interface with standard logic families.
• IOFF circuitry enables safe partial power-down applications without damaging backflow currents.
• Schmitt-trigger inputs provide noise immunity and tolerance for slower rise and fall times.

Buffers, Drivers, Receivers, Transceivers Applications

• Translating signals between 3.3 V and 5 V mixed-mode voltage environments
• Octal bus-oriented memory and address drivers
• Clock distribution and buffering

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'PWJ' against the manufacturer's latest ordering information to confirm package details and tape-and-reel specifications. Ensure the selected variant matches the required temperature range and RoHS compliance status for your application environment.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when TTL-level compatibility is required alongside high-speed buffering capabilities. The dual-enable architecture allows flexible partitioning of the eight outputs. Verify that the load capacitance requirements align with the specified propagation delay limits at the target operating voltage.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the 74AHCT244A family of octal buffers. It shares functional similarities with the 74AHC244 but utilizes CMOS inputs compatible with TTL logic levels. The APWJ designation indicates a specific TSSOP20 package configuration manufactured by Nexperia.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

The 74AHCT244APW is the base package equivalent. Cross-reference with other 74AHCT244 variants from different manufacturers only if pinout and electrical characteristics are identical.

Buffers, Drivers, Receivers, Transceivers FAQ

How does the IOFF feature function?

The IOFF circuitry disables the outputs when the device is powered down, preventing damaging backflow current through the device.

What is the input voltage compatibility?

The inputs are TTL compatible, allowing the device to be used as a translator in mixed voltage environments, such as translating from 3.3 V to 5 V.