CD74HCT374EG4

Overview

The CD74HCT374EG4 is an octal D-type flip-flop manufactured by Texas Instruments, belonging to the HCT logic family. It features eight independent D-type flip-flops with tri-state outputs and positive-edge triggering. The device operates within a supply voltage range of 4.5 V to 5.5 V and utilizes a 20-pin EG (SOIC) package. Key electrical parameters include a propagation delay of 38 ns at 5.5 V, high-level output current of -4 mA, and low-level output current of 4 mA. It supports a maximum clock frequency of 40 MHz and functions across an operating temperature range of -55 °C to +125 °C.

Feature Summary

• Octal configuration providing eight independent D-type flip-flops in a single integrated circuit
• Tri-state outputs allowing direct connection to bus structures for efficient data management
• Positive-edge triggering mechanism ensures precise synchronization with system clocks
• CMOS construction compatible with TTL input levels for versatile interface integration

Applications

• Parallel-to-serial or serial-to-parallel data conversion circuits
• Register storage elements in digital processing systems
• Bus-oriented memory applications requiring tri-state isolation
• Timing delay compensation networks in synchronous logic designs

Procurement Notes

Verify the specific suffix 'G4' indicates RoHS compliance and lead-free manufacturing status as per manufacturer specifications. Confirm the package designation 'EG' corresponds to the 20-pin SOIC variant. Ensure compatibility with existing board layouts regarding pinout and thermal requirements before finalizing procurement decisions.

Selection Notes

Select this component when designing systems requiring high-density octal storage with tri-state capabilities. The HCT series ensures compatibility with standard 5 V TTL logic families. Consider the wide industrial temperature range for environments demanding extended operational stability compared to commercial grade alternatives.

Part Context

This part belongs to the CD74HCT374 product line, representing the commercial-grade version of the SN54HCT374 military-grade device. It is part of Texas Instruments' broader portfolio of high-speed CMOS logic solutions designed for complex digital applications requiring reliable data retention and transfer.

Replacement Considerations

Direct substitutes include the SN74HCT374DWR and SN74HCT374DBR from Texas Instruments, which share identical logical functionality but differ in packaging formats such as SOIC-W or SSOP.