SN74ALS373ADWR

Overview

The SN74ALS373ADWR is an octal transparent D-type latch with 3-state outputs manufactured by Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V and supports a commercial operating temperature range of 0°C to 70°C. The device features a propagation delay from data input (D) to output (Q) ranging from 2 ns to 16 ns, depending on specific conditions. It provides a low-level output current capability of up to 24 mA and a high-level output current of -2.6 mA. Packaged in a 20-pin SOIC (DW) format, it is supplied in tape and reel quantities.

Feature Summary

• Features eight latches in a single package designed for driving highly capacitive or relatively low-impedance loads.
• Includes buffered control inputs utilizing pnp technology to reduce DC loading on data lines.
• Provides three-state bus-driving true outputs that can be placed in a high-impedance state via the OE input.

Applications

• Implementing buffer registers
• I/O ports
• Bidirectional bus drivers
• Working registers

Procurement Notes

Verify the active status of the SN74ALS373ADWR through official Texas Instruments channels before procurement. Confirm compliance with RoHS standards and lead finish specifications (NIPDAU). Ensure the required moisture sensitivity level (MSL 1) aligns with your assembly process capabilities. Validate that the SOIC-20 package dimensions match your PCB footprint requirements.

Selection Notes

Select this component when designing systems requiring octal latching with high drive capability for bus applications. Consider the ALS logic family characteristics regarding speed and power consumption relative to other series like HC or AS. Ensure the 4.5 V to 5.5 V supply voltage range matches the system power architecture. Verify that the 0°C to 70°C operating temperature range satisfies the environmental constraints of the target application.

Part Context

This part belongs to the SN54/74ALS373A and SN54/74AS373 family of octal transparent D-type latches with 3-state outputs. The 'ALS' designation indicates Advanced Low-power Schottky logic technology. The 'DW' suffix specifies the SOIC surface-mount package, while 'R' denotes the tape and reel packaging configuration suitable for automated assembly processes.

Replacement Considerations

SN74ALS373ADW is the tube version of the same device. SN74ALS373ANSR is the SOP variant. SN74AS373DWR is the faster AS logic equivalent in the same package.