SN74HC573ANE4

Overview

The SN74HC573ANE4 is an octal transparent D-type latch with 3-state outputs manufactured by Texas Instruments. It operates within a supply voltage range of 2 V to 6 V and features high-current outputs capable of driving bus lines directly or up to 15 LSTTL loads. The device provides low power consumption with a maximum ICC of 80 µA and typical propagation delays ranging from 21 ns to 44 ns depending on voltage. It utilizes a PDIP-20 package and supports an operating temperature range from -40 °C to +85 °C.

Feature Summary

• Octal transparent D-type latches with 3-state outputs designed for driving highly capacitive or low-impedance loads
• High-current outputs enable direct connection to bus lines without interface components
• Low power consumption with minimal input leakage current

Applications

• Buffer registers
• Bidirectional bus drivers
• Working registers

Procurement Notes

Verify the ordering suffix E4 indicates lead-free packaging compliant with RoHS standards. Confirm the specific package type matches the design requirements, as this part number corresponds to the PDIP-20 configuration. Ensure compatibility with the intended operating temperature range and supply voltage specifications before finalizing procurement decisions.

Selection Notes

Select this component when designing circuits requiring octal data storage with tri-state output control. It is suitable for applications needing direct drive capability for bus lines or multiple TTL loads. Consider the wide operating voltage range and low static power consumption as key advantages for battery-powered or general-purpose digital logic designs.

Part Context

This device belongs to the SNx4HC573A family of high-speed CMOS logic devices. It shares functional characteristics with other variants in the series but differs in physical packaging and environmental ratings. The 'E4' suffix specifically denotes lead-free construction, aligning with modern manufacturing standards while maintaining the core electrical performance of the standard HC logic family.

Replacement Considerations

SN74HC573AN serves as a direct pin-compatible alternative within the same package style.