SN74ALS573CN

Overview

The SN74ALS573CN is an octal transparent latch from the Texas Instruments ALS logic family, housed in a 20-pin DIP package. It features eight D-type latches with true outputs and operates within a supply voltage range of 4.5 V to 5.5 V. The device exhibits a propagation delay of 14 ns, a low-level output current capability of 32 mA, and a high-level output current of -2.6 mA. It functions reliably across an operating temperature range of 0°C to +70°C.

Feature Summary

• Contains eight independent transparent D-type latches for parallel data storage
• Provides true (non-inverting) outputs for direct signal interfacing
• Utilizes Advanced Low-power Schottky technology for optimized speed and power consumption

Applications

• Parallel-to-serial data conversion circuits
• Register stages in microprocessor-based systems
• Buffering and driving high-capacitance loads

Procurement Notes

Verify the specific suffix 'CN' against the manufacturer's official documentation to confirm the exact package type and commercial temperature rating. Ensure compatibility with existing board layouts requiring through-hole mounting. Cross-reference the datasheet revision date to validate electrical characteristics against current production standards.

Selection Notes

Select this component when designing systems requiring robust buffering with moderate switching speeds. The ALS series offers a balance between power dissipation and performance suitable for general-purpose digital logic applications. Consider the DIP-20 form factor if prototyping or maintaining legacy through-hole designs.

Part Context

This part belongs to the SN74ALS573 series of octal latches manufactured by Texas Instruments. It is part of the broader 74-series logic family, specifically utilizing the Advanced Low-power Schottky (ALS) process. This lineage ensures compatibility with standard TTL logic levels while providing improved efficiency over earlier LS variants.

Replacement Considerations

Compatible substitutes include the SN74ALS573N and SN74ALS573DW. Verify that alternative packages maintain the same pinout configuration and electrical specifications to ensure seamless integration without circuit redesign.