SN74ALS373ADW

Overview

The SN74ALS373ADW is an octal transparent D-type latch with 3-state outputs manufactured by Texas Instruments. It belongs to the ALS logic series and features buffered control inputs with pnp inputs that reduce dc loading on data lines. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports a commercial operating temperature range from 0°C to +70°C. It utilizes a 20-pin SOIC (DW) package for surface-mount applications.

Feature Summary

• Features three-state bus-driving true outputs designed for driving highly capacitive or low-impedance loads without interface components.
• Provides full parallel access for loading, allowing all eight latches to be updated simultaneously when the latch-enable input is high.
• Includes a buffered output-enable input to place outputs in a normal logic state or a high-impedance state independently of internal latch operations.

Applications

• Implementing buffer registers
• Creating I/O ports
• Designing bidirectional bus drivers
• Functioning as working registers

Procurement Notes

Verify the specific ordering suffix against current manufacturer documentation to confirm package type and availability status. Confirm RoHS compliance and lead finish details via the official Package Option Addendum. Ensure the selected variant matches the required operating temperature range and packaging format for your assembly process.

Selection Notes

Select this component for designs requiring octal data storage with high-drive capability and bus isolation. Consider the ALS series characteristics regarding power consumption and speed relative to other logic families. Verify that the 20-pin SOIC footprint aligns with the PCB layout constraints and thermal management requirements of the target application environment.

Part Context

This part is part of the SN54/74ALS373A family of octal transparent D-type latches. It shares functional similarities with the SN74AS373 but differs in electrical specifications such as propagation delay and drive current. The 'DW' suffix specifically denotes the 20-pin small-outline integrated circuit package suitable for surface-mount technology.

Replacement Considerations

SN74ALS373AN (PDIP-20), SN74ALS373ADWR (SOIC-20 Tape & Reel)