MM74HC373N

Latches Overview

The MM74HC373N is a high-speed octal D-type latch manufactured by onsemi using advanced silicon-gate CMOS technology. It features eight independent D-type latches with three-state outputs, designed for bus-oriented systems. The device operates within a supply voltage range of 2 V to 6 V and supports an operating temperature range from -55°C to +125°C. Key electrical characteristics include a typical propagation delay of 18 ns at 5 V, maximum quiescent current of 160 µA, and output drive capability sufficient for 15 LS-TTL loads.

Latches Feature Summary

• High noise immunity and low power consumption inherent to standard CMOS integrated circuits
• Three-state outputs suitable for interfacing with bus lines in organized systems
• Internal diode clamps protect all inputs from damage due to static discharge
• Speed, function, and pin-out compatibility with the standard 74LS logic family

Latches Applications

• Interfacing with bus lines in bus-organized systems
• Data storage applications requiring transparent latch functionality
• Systems requiring LSTTL load driving capability

Latches Procurement Notes

Verify that the specific part number suffix matches the required package type, as the datasheet lists SOIC-20 and TSSOP-20 options but does not explicitly confirm a DIP-20 variant under this exact manufacturer code. Confirm RoHS compliance status and check for any recent Product Change Notices (PCN) regarding assembly or material declarations before finalizing procurement orders.

Latches Selection Notes

Select this component when designing systems requiring octal data latching with tri-state bus isolation. Ensure the application voltage falls within the 2 V to 6 V range and that the thermal environment stays within the -55°C to +125°C operating limits. Consider the 18 ns typical propagation delay for timing constraints and verify input/output voltage levels against the specified VIH and VIL thresholds for the chosen supply voltage.

Latches Part Context

This device belongs to the 74HC series of high-speed CMOS logic devices. It is functionally compatible with the 74LS logic family in terms of speed and pinout, allowing for potential upgrades in power efficiency without changing board layouts. The MM74HC373 serves as a foundational building block for digital memory and interface circuits in general-purpose electronic designs.

Latches Replacement Considerations

Direct functional equivalents include other 74HC373 variants from different manufacturers, provided they support the same 20-pin DIP package and electrical specifications. Verify pin compatibility and voltage ranges when substituting.