74VHC373M

Latches Overview

The Fairchild Semiconductor 74VHC373M is an octal transparent latch with 3-STATE outputs, belonging to the advanced high-speed CMOS (VHC) logic family. It integrates eight D-type latches in a single package, designed for bus-organized system applications. The device operates within a supply voltage range of 2.0 V to 5.5 V and supports an operating temperature range from -40 °C to +85 °C. Key electrical characteristics include a maximum quiescent current of 4 µA at 25 °C and typical propagation delays of 5.0 ns at 5 V. It utilizes silicon gate CMOS technology to achieve high noise immunity and low power dissipation while maintaining compatibility with standard logic families.

Latches Feature Summary

• Provides eight transparent D-type latches with 3-STATE outputs for efficient bus management
• Features high noise immunity with minimum noise margins defined as 28% of VCC
• Includes power-down protection on all inputs to prevent damage during low-power states
• Delivers high-speed operation comparable to Bipolar Schottky TTL with minimal power consumption

Latches Applications

• Bus-organized system data storage and buffering
• Interfacing between 5V and 3V logic systems
• High-speed digital signal processing circuits requiring low latency
• Memory address latching in microprocessor-based designs

Latches Procurement Notes

Verify the specific suffix code against the manufacturer's official datasheet to confirm pinout, package type, and electrical specifications. Ensure the component meets required RoHS compliance standards if applicable to your manufacturing process. Cross-reference the ordering part number with authorized distributors to guarantee authenticity and traceability. Confirm that the supply voltage and operating temperature ranges align with your system design requirements before procurement.

Latches Selection Notes

Select this component when designing systems that require multiple parallel data latches with tri-state control capabilities. It is suitable for applications demanding high switching speeds alongside low static power consumption. Consider its compatibility with both 5V and 3.3V logic levels for versatile interface designs. Evaluate the package constraints to ensure the SOIC-20 form factor fits the available PCB real estate and thermal management strategy.

Latches Part Context

This device is part of the 74VHC series, which represents an evolution of the standard 74HC logic family. The VHC series offers improved speed performance while retaining the low power advantages of CMOS technology. It serves as a direct functional replacement for older 74LS or 74HC variants in many high-speed applications, providing enhanced noise immunity and faster transition times without increasing power dissipation significantly.

Latches Replacement Considerations

Check for equivalents such as ON Semiconductor MM74VHC373M or Texas Instruments SN74VHC373PW. Verify pin compatibility and electrical parameters like propagation delay and output drive strength. Ensure the substitute component matches the required package style and operating temperature range for seamless integration.