74ABT640PW,118

Buffers, Drivers, Receivers, Transceivers Overview

The 74ABT640PW,118 is an octal bidirectional bus interface transceiver manufactured by Nexperia USA Inc. (formerly Philips Semiconductors). It features inverting 3-State outputs compatible with both send and receive directions. The device operates within a DC supply voltage range of 4.5 V to 5.5 V. Propagation delay from An to Bn or Bn to An is typically 3.1 ns at 25°C with a 50 pF load. Output capability provides +64 mA low-level current and -32 mA high-level current. It includes power-up 3-State functionality and latch-up protection exceeding 500 mA per JEDEC Std 17.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Octal bidirectional bus interface with inverting 3-State outputs for both send and receive directions
• Direction control via DIR input and output enable via OE input for easy cascading
• High output drive capability supporting live insertion and extraction
• Power-up 3-State function ensures safe initialization

Buffers, Drivers, Receivers, Transceivers Applications

• Bidirectional bus interfaces
• Memory mapping
• Signal buffering

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the manufacturer designation on official documentation, as the component originates from Philips Semiconductors and is now distributed under Nexperia branding. Confirm the package type corresponds to the TSSOP-20 variant indicated by the PW suffix. Ensure compatibility with the specified 4.5 V to 5.5 V operating voltage range and check for any product change notifications regarding pinout or electrical characteristics before finalizing procurement.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring high-speed octal data transfer with direction control. The ABT series offers BiCMOS performance suitable for systems needing fast propagation delays and strong drive currents. Consider the 3-State outputs for bus sharing and the inverting logic function when designing signal paths. Verify that the system voltage aligns with the recommended 5 V operation and that thermal constraints are met given the high output current capabilities.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the 74ABT logic family, which utilizes BiCMOS technology to achieve high speed and low power dissipation. The 74ABT640 specifically serves as an octal transceiver, differing from standard buffers by providing bidirectional data flow controlled by external pins. It is designed for high-performance digital systems requiring robust bus interfacing capabilities.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Check for direct cross-references from other manufacturers offering identical octal transceiver specifications. Verify pin compatibility and electrical parameters such as propagation delay and output drive strength against alternative sources.