SN74ALS651A-1DWR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74ALS651A-1DWR is an octal bus transceiver and register from Texas Instruments' ALS series. It features eight-bit bidirectional data transfer with inverted outputs and three-state capability. The device integrates D-type flip-flops for storage, allowing data to be latched while maintaining high-speed bus operations. Designed for 5V TTL logic systems, it supports efficient data routing in complex digital circuits requiring both transmission and temporary storage functions.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Integrates octal bus transceiver functionality with D-type flip-flop registers for simultaneous data transmission and storage
• Provides three-state outputs to facilitate direct connection to system buses without external buffers
• Features inverted output polarity to accommodate specific logic interface requirements in digital designs

Buffers, Drivers, Receivers, Transceivers Applications

• Bidirectional data buffering in microprocessor-based systems
• Register interfaces for memory mapping and I/O expansion
• Data storage nodes within high-speed digital communication buses

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the exact suffix 'DWR' corresponds to the SOIC-24 tape-and-reel packaging configuration. Confirm RoHS compliance status as older ALS variants may differ. Ensure the design accounts for the inverted output logic level. Cross-reference the manufacturer part number against official Texas Instruments documentation to avoid counterfeit components or incorrect package variants during procurement.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when a design requires both bus driving and data latching in a single package. The ALS series offers faster switching speeds compared to standard LS logic. Consider the inverted output characteristic when designing signal paths. Verify that the SOIC-24 package fits the PCB layout constraints. Ensure power supply stability meets the specific voltage requirements for reliable operation at high frequencies.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the Texas Instruments SN74ALS651 family of octal bus transceivers. It is functionally similar to the SN74ALS651ADW but differs in packaging format. The ALS series represents an advanced low-power Schottky technology variant, providing improved speed and power consumption characteristics compared to earlier generations of bipolar logic devices used in industrial applications.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

The SN74ALS651ADW serves as a pin-compatible alternative in a different package. Check datasheets for electrical parameter equivalence before substitution.