SN74HC573ANG4

Overview

The SN74HC573ANG4 is an octal transparent D-type latch manufactured by Texas Instruments, belonging to the HC logic series. It features eight independent D-type latches with three-state outputs in a 20-pin PDIP package. The device operates within a supply voltage range of 2 V to 6 V and supports a maximum low-level output current of 32 mA. Propagation delay varies from 200 ns at 2 V to 34 ns at 6 V, with a typical static current of 8 uA. It functions across an extended temperature range from -40°C to +85°C.

Feature Summary

• Provides eight transparent D-type latches with shared control inputs for efficient data storage.
• Features three-state outputs allowing direct connection to bus structures without external buffers.
• Includes Schmitt-trigger inputs on all channels to tolerate slow or noisy signal transitions.

Applications

• Parallel-to-serial conversion circuits
• Bus-driven memory address latching
• General-purpose register applications

Procurement Notes

Verify the specific suffix 'G4' indicates lead-free packaging compliant with RoHS standards. Confirm the PDIP-20 through-hole package matches your PCB footprint requirements. Ensure the operating temperature range meets your environmental specifications. Cross-reference the manufacturer part number with official datasheets to confirm pinout compatibility.

Selection Notes

Select this component when designing systems requiring multiple parallel data storage elements with high noise immunity. The HC series offers CMOS power efficiency suitable for battery-operated devices. Verify that the 32 mA drive capability satisfies load requirements. Consider the PDIP package only if manual assembly or prototyping is necessary.

Part Context

This device is part of the SN74HC573 family of octal latches. It shares functional characteristics with variants like SN74HC573AN but differs in packaging and compliance markings. The HC series represents standard-speed CMOS logic, balancing power consumption and switching speed for general digital applications.

Replacement Considerations

SN74HC573AN serves as a direct functional equivalent with identical electrical characteristics. SN74HC573APWT offers the same functionality in a surface-mount TSSOP package. SN74HC573ADWRG4 provides the same performance in an SOIC-20 package.