74VHC374N

Overview

The Fairchild Semiconductor 74VHC374N is an octal D-type flip-flop with 3-state outputs, part of the AHC/VHC logic series. It features a 20-pin DIP package (PDIP-20) and operates within a supply voltage range of 2V to 5.5V. The device provides a maximum propagation delay of 10.1ns at 5V with 50pF load capacitance and supports a clock frequency up to 120 MHz. Static current is typically 4µA, with output drive capabilities of 8mA high and low. It is designed for bus-oriented systems and offers high noise immunity.

Feature Summary

• Octal D-type flip-flop architecture with positive edge triggering
• Three-state outputs for efficient bus line interfacing
• High-speed operation comparable to Bipolar Schottky TTL
• Low power dissipation with CMOS technology

Applications

• Buffer registers in digital systems
• I/O port implementations
• Bidirectional bus drivers
• Working registers for data storage

Procurement Notes

Verify component authenticity as this specific part number may be discontinued or obsolete. Confirm pinout compatibility with existing PCB layouts, particularly regarding the 20-pin DIP configuration. Check for moisture sensitivity level compliance if reflow soldering is required. Ensure replacement parts meet the same electrical specifications for voltage range and drive current.

Selection Notes

Select this component when high-speed octal latching with three-state outputs is required. It is suitable for applications needing interface between microprocessors and peripheral devices. Consider the 2V to 5.5V operating range for flexibility in different logic families. Evaluate the 10.1ns propagation delay against system timing requirements.

Part Context

The 74VHC374N belongs to the advanced high-speed CMOS (VHC) family, offering performance similar to bipolar Schottky TTL but with lower power consumption. It is functionally compatible with the 74HC374 series. The device is manufactured using silicon gate CMOS technology, ensuring robust noise immunity and reliable operation in various digital environments.

Replacement Considerations

SN74AHC374N by Texas Instruments is a confirmed parameter-equivalent substitute.