SN74ACT373N

Overview

The SN74ACT373N is an octal transparent D-type latch manufactured by Texas Instruments, belonging to the 74ACT logic series. It features eight D-type latches with three-state outputs in a 20-pin PDIP package. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports through-hole mounting. Key electrical specifications include a propagation delay of 10 ns, static current of 4 uA, low-level output current of 32 mA, and high-level output current of -24 mA. It functions reliably across an operating temperature range from -40 °C to +85 °C.

Feature Summary

• Contains eight non-inverting D-type latches for parallel data storage
• Provides three-state outputs to facilitate bus-driven architectures
• Operates as a transparent latch where outputs follow inputs while enabled

Applications

• Parallel-to-serial conversion circuits
• Bus-oriented memory register structures
• Clock domain synchronization interfaces

Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm pinout compatibility and package dimensions. Ensure the selected variant meets the required industrial temperature range and voltage specifications for your target application environment before finalizing procurement decisions.

Selection Notes

Select this component when designing systems requiring octal data storage with tri-state control capabilities. It is suitable for applications needing moderate speed performance with standard TTL-compatible input levels. Consider the PDIP-20 package constraints for manual assembly or prototyping workflows requiring through-hole technology integration.

Part Context

This part belongs to the Texas Instruments SN74ACT family, which combines CMOS density with fast switching speeds comparable to earlier bipolar technologies. The ACT series is designed to bridge the gap between legacy LS logic and modern high-speed AC devices, offering improved power consumption characteristics while maintaining robust noise immunity in digital logic environments.

Replacement Considerations

Direct functional equivalents include the SN74ACT373DW (SOIC-20) and SN74ACT373PW (TSSOP-20). Verify pin compatibility and thermal management requirements when transitioning between different package types within the same logical family.