SN74ALS873BDW

Overview

The SN74ALS873BDW is an octal transparent D-type latch manufactured by Texas Instruments within the ALS logic series. It features eight independent D-type latches with three-state outputs, housed in a 24-pin SOIC package. The device operates on a single 5V supply ranging from 4.5V to 5.5V. Key electrical parameters include a propagation delay of 14 ns, low-level output current capability of 32 mA, and high-level output current of -2.6 mA. It supports surface mount installation and functions within a commercial temperature range of 0°C to +70°C.

Feature Summary

• Octal configuration providing eight independent D-type latches for parallel data storage
• Three-state outputs enabling direct bus connections without external buffers
• Transparent latch operation allowing data to pass through when enabled

Applications

• Parallel I/O buffering in microprocessor-based systems
• Registering data on system buses
• Temporary storage for digital signal processing applications

Procurement Notes

Verify component authenticity through authorized distributors or manufacturer channels. Confirm RoHS compliance status as indicated in official documentation. Check for obsolescence notices or product discontinuation announcements prior to procurement. Ensure packaging specifications match design requirements. Validate that the specific suffix corresponds to the intended package type and temperature rating.

Selection Notes

Select this component for designs requiring octal data latching with bus-compatible outputs. Consider the ALS series speed-power trade-offs against other logic families. Verify voltage levels match the system's 5V logic standards. Assess thermal management needs based on the specified operating temperature range. Evaluate pin compatibility if replacing existing circuit board layouts.

Part Context

This part belongs to the SN74ALS873B family of octal latches. It shares functional similarities with other ALS series devices but differs in package style and specific electrical characteristics. The BDW suffix indicates a wide-body SOIC package suitable for surface mount technology. It serves as a standard solution for parallel data retention in legacy and industrial electronic systems.

Replacement Considerations

SN74ALS873BDWR is listed as a similar alternative by the manufacturer.