SN74AS573ADW

Overview

The SN74AS573ADW is an octal transparent D-type latch with 3-state outputs from the Texas Instruments AS logic series. It operates within a supply voltage range of 4.5 V to 5.5 V and features a propagation delay of 8 ns at 5 V. The device provides low-level output current of 32 mA and high-level output current of -15 mA. It is housed in a 20-pin SOIC package and supports operating temperatures from 0°C to +70°C.

Feature Summary

• Octal transparent D-type latching architecture
• Three-state output capability for bus driving
• High-speed AS logic family performance

Applications

• Registering data on microprocessor buses
• Buffering memory address lines
• Driving high-capacitance loads in digital systems

Procurement Notes

Verify the specific suffix 'DW' confirms the SOIC-20 tube packaging variant. Confirm the AS series designation matches system speed requirements, as it differs significantly from LVC or HC families. Ensure voltage levels align with 5V logic standards before procurement.

Selection Notes

Select this component when high-speed latching is required in 5V applications. The AS series offers faster propagation than standard TTL but consumes more power. Compare against SN74LS573 for lower cost or SN74LVC573 for lower voltage compatibility.

Part Context

This part belongs to the SN74AS573A family of octal latches. It shares the functional pinout with SN74LS573 but utilizes Advanced Schottky technology for improved switching speeds. The DW suffix indicates a plastic small-outline package suitable for surface-mount assembly.

Replacement Considerations

• SN74AS573ADR
• SN74AS573ADWR

FAQ

What is the propagation delay of the SN74AS573ADW?

The propagation delay is 8 ns.

Does the SN74AS573ADW have inverted outputs?

No, the outputs are non-inverting.