SN74AS757DWR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74AS757DWR is an octal buffer and line driver from the Texas Instruments AS logic family, housed in a 20-pin SOIC (DW) package. It operates on a single supply voltage ranging from 4.5 V to 5.5 V. The device features two independent four-bit buffers with non-inverting outputs configured as open-collector. It includes symmetrical active-low output-enable inputs for each buffer section. Designed for high fan-out and improved fan-in, it utilizes pnp inputs to reduce DC loading.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Open-collector outputs designed to drive bus lines or buffer memory address registers without requiring 3-state overlap protection.
• Features pnp inputs that significantly reduce DC loading compared to standard TTL inputs.
• Provides symmetrical active-low output-enable inputs for precise control of both buffer sections.

Buffers, Drivers, Receivers, Transceivers Applications

• Memory address drivers
• Clock drivers
• Bus-oriented receivers and transmitters

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix 'DWR' corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm the RoHS compliance status and lead finish details against the latest manufacturer documentation prior to finalizing procurement specifications.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems that require high-density octal buffering with open-collector outputs. It is suitable for applications needing to eliminate 3-state overlap protection circuitry while maintaining high fan-out capabilities and reduced input loading characteristics typical of the AS logic family.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN54/74AS series of high-speed Schottky logic devices. The SN74AS757 specifically provides non-inverting octal buffering. It shares functional similarities with the SN74AS756 but differs in output polarity configuration. The device is characterized for commercial temperature ranges and is available in various package options including plastic small-outline and DIP formats.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74AS757DW

Buffers, Drivers, Receivers, Transceivers FAQ

What is the primary advantage of using open-collector outputs in this device?

The open-collector outputs allow the elimination of 3-state overlap protection circuits, simplifying the design of bus-oriented systems and memory address drivers.

How does the input structure of the SN74AS757 affect system loading?

The device utilizes pnp inputs which reduce DC loading on the driving sources compared to traditional TTL inputs, improving overall system performance and density.