CD74HC374E

Overview

The CD74HC374E is a high-speed CMOS octal D-type flip-flop manufactured by Harris Corporation. It features eight edge-triggered D flip-flops with three-state outputs, designed for bus-oriented systems. The device operates on a single supply voltage ranging from 2V to 6V and supports a maximum frequency of 100MHz at 5V. It utilizes standard 16-pin DIP packaging and is rated for an extended operating temperature range from -55°C to 125°C. The component provides direct drive capability for fifteen LSTTL loads while maintaining low power consumption typical of CMOS technology.

Feature Summary

• Octal configuration with independent data inputs and clock triggers
• Three-state output control for efficient bus line driving
• High noise immunity with balanced propagation delays
• Direct compatibility with LSTTL logic levels

Applications

• Parallel-to-serial data conversion circuits
• General-purpose register storage in digital systems
• Bus interface buffering and isolation
• Timing and synchronization logic modules

Procurement Notes

Verify the manufacturer origin carefully as this part number may be sourced from various distributors or legacy stock holders. Confirm the package type matches the required 16-DIP specification. Check RoHS compliance status as older Harris batches may not meet current environmental standards. Ensure the supplier provides valid traceability documentation for critical applications.

Selection Notes

Select this component when an octal D-flip-flop with three-state outputs is required for bus architectures. It is suitable for designs needing wide voltage operation between 2V and 6V. Consider the 100MHz speed rating for high-frequency timing applications. Verify that the 16-pin DIP package fits the PCB layout constraints compared to surface-mount alternatives.

Part Context

This component belongs to the 74HC series of high-speed CMOS logic devices. It is functionally similar to other octal D-type latches but specifically implements edge-triggered flip-flop behavior. The 'E' suffix typically denotes the through-hole DIP package variant. It serves as a fundamental building block for sequential logic circuits in industrial and consumer electronics.

Replacement Considerations

• CD74HCT374E
• CD74HC374N
• SN74HC374N

FAQ

What is the maximum operating frequency?

The maximum operating frequency is 100MHz at a supply voltage of 5V.

How many bits does this device contain?

It contains eight D-type flip-flops, providing 8-bit parallel storage capability.

Is it compatible with LSTTL loads?

Yes, it can directly drive fifteen LSTTL loads due to its output current capabilities.