DM74AS573WM

Latches Overview

The DM74AS573WM is an octal D-type transparent latch with 3-STATE outputs manufactured by onsemi. It operates within a supply voltage range of 4.5V to 5.5V and features a 20-Lead Small Outline Integrated Circuit (SOIC) package. The device provides high-impedance states for bus driving, with propagation delays from data inputs to outputs ranging from 3ns to 6ns at 50pF load. Output drive capabilities include -15mA high-level and 48mA low-level currents.

Latches Feature Summary

• Features 3-STATE outputs designed for direct connection to bus lines without interface components
• Transparent D-type latching allows outputs to follow data inputs while enable is HIGH
• Buffered output control isolates internal latch operation from external output states

Latches Applications

• Implementing buffer registers in digital systems
• Configuring I/O ports for data handling
• Serving as bidirectional bus drivers
• Functioning as working registers in memory architectures

Latches Procurement Notes

Verify the specific ordering code suffix to confirm package type, as the WM designation indicates SOIC packaging. Confirm RoHS compliance status through official documentation, as historical revisions may affect environmental declarations. Ensure the source document matches the current manufacturer specifications before finalizing procurement orders.

Latches Selection Notes

Select this component when high-speed latching with bus-compatible outputs is required. The AS series offers improved AC performance compared to standard S-TTL equivalents while maintaining functional compatibility. Consider the 20-lead SOIC form factor for surface-mount assembly requirements and verify thermal dissipation needs based on the specified junction-to-ambient resistance values.

Latches Part Context

This device belongs to the Advanced Schottky (AS) logic family, known for high speed and reduced power consumption relative to earlier standards. It serves as a functional equivalent to the DM74S373 but with enhanced switching characteristics. The part is produced under the Fairchild Semiconductor brand, now integrated into onsemi's portfolio.

Latches Replacement Considerations

The DM74S373 is documented as functionally equivalent. Verify pinout compatibility and electrical parameter margins when substituting. Other manufacturers producing SN74AS573 variants should be cross-referenced against the official datasheet specifications to ensure interchangeability.