SN74S373N

Overview

The SN74S373N is an octal transparent D-type latch manufactured by Texas Instruments, belonging to the 74S 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 4.75V to 5.25V and supports a propagation delay of 12ns. It provides a low-level output current of 20mA and a high-level output current of 6.5mA. The component functions at temperatures between 0°C and 70°C.

Feature Summary

• Octal transparent D-type latch configuration
• Three-state outputs for bus-driven systems
• High-speed Schottky (S) logic family performance

Applications

• Parallel-to-serial data conversion
• Bus-oriented memory register applications
• Clock buffering and timing control circuits

Procurement Notes

Verify the specific manufacturer origin, as this part number may be produced by multiple authorized vendors including onsemi or Texas Instruments. Confirm RoHS compliance status and check for obsolescence notices, particularly regarding onsemi production which has been marked as discontinued. Ensure the package type matches the required 20-PDIP specification before ordering.

Selection Notes

Select this component when high-speed switching is required compared to standard TTL or LS families. The three-state output capability allows direct connection to system buses without external transceivers. Consider the 74S series power consumption characteristics against the speed benefits for thermal management in dense designs.

Part Context

This component is part of the widely adopted 74xx logic family, specifically utilizing Schottky diodes to prevent saturation and improve switching speeds. It serves as a fundamental building block for digital storage and interface circuits in industrial and commercial electronics requiring reliable parallel data handling.

Replacement Considerations

SN74S373N from Texas Instruments is a direct substitute for the obsolete DM74S373N from onsemi.