CD74HC374M

Overview

The CD74HC374M is an octal D-type flip-flop manufactured by Texas Instruments, belonging to the high-speed CMOS (HC) logic family. It features eight independent edge-triggered D-type flip-flops with tri-state outputs, housed in a 20-pin SOIC surface-mount package. The device operates within a supply voltage range of 2 V to 6 V and supports a wide operating temperature range from -55°C to +125°C. Key electrical characteristics include a maximum clock frequency of 50 MHz and propagation delays ranging from 26 ns at 6 V to 150 ns at 2 V. Output drive capabilities provide up to 7.8 mA for high-level and 32 mA for low-level currents.

Feature Summary

• Octal configuration containing eight independent D-type flip-flops for parallel data storage
• Tri-state outputs enable direct connection to bus systems without external drivers
• Edge-triggered operation ensures data capture on the positive clock transition
• Wide supply voltage compatibility allows operation across standard logic levels

Applications

• Parallel data buffering in digital communication interfaces
• Register stages in microprocessor-based control systems
• Data acquisition systems requiring temporary signal storage
• Bus-oriented memory applications in industrial automation

Procurement Notes

Verify the specific suffix 'M' corresponds to the SOIC-20 package variant when sourcing. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure thermal management aligns with the specified -55°C to +125°C operating range for harsh environments. Cross-reference pinout diagrams against PCB layout requirements to prevent interface mismatches during assembly.

Selection Notes

Select this component for designs requiring robust tri-state output control and wide voltage tolerance. Compare propagation delay specifications against system timing constraints to ensure signal integrity. Evaluate package dimensions against available board space for surface-mount implementation. Consider the HC series performance relative to HCT or AHC families based on input threshold and speed requirements.

Part Context

This device belongs to the SN74HCxx and CD74HCxx series of octal flip-flops produced by Texas Instruments. It serves as a core building block for sequential logic circuits, offering reliable data retention and high-speed switching capabilities. The HC technology provides low power consumption while maintaining fast switching speeds suitable for complex digital systems.

Replacement Considerations

Direct substitutes include the SN74HC374N for through-hole applications or other variants within the 74HC374 family. Verify pin compatibility and electrical parameters before swapping packages. Consult official replacement guides for equivalent components from other manufacturers ensuring identical functionality.