CD74HCT377EG4

Overview

The CD74HCT377EG4 is an octal D-type flip-flop with positive-edge triggering, manufactured by Texas Instruments. It belongs to the 74HCT logic family and operates within a supply voltage range of 4.5V to 5.5V. The device features non-inverting outputs and is housed in a 20-pin PDIP package. Key electrical specifications include a maximum propagation delay of 38ns at 4.5V with 50pF load, a clock frequency of 50 MHz, and a static current of 8 µA. It supports output currents of 4mA for both high and low states.

Feature Summary

• Positive-edge triggered octal D-type flip-flop architecture
• Compatible with standard CMOS and LSTTL logic families
• Non-inverting output configuration

Applications

• Octal data storage applications
• Shift register implementations
• Parallel-to-serial conversion circuits

Procurement Notes

Verify the specific suffix 'G4' indicates RoHS compliance and lead-free manufacturing status as per manufacturer documentation. Confirm the package type matches the required 20-PDIP form factor. Ensure the operating temperature range meets system requirements of -55°C to 125°C. Cross-reference the datasheet revision to confirm pinout and electrical characteristics remain unchanged from previous versions.

Selection Notes

Select this component when an octal latch or flip-flop with HCT speed compatibility is required. It serves as a direct functional equivalent to the SN74HCT377 series. Consider the 20-pin DIP package for through-hole prototyping or legacy board designs. Verify that the 50 MHz clock frequency suffices for the target application timing constraints.

Part Context

This part is part of the Texas Instruments 74HCT series of high-speed CMOS logic devices. The 74HCT377 specifically provides eight independent D-type flip-flops in a single package. It is designed to interface directly with TTL systems while offering CMOS power consumption benefits. The EG4 suffix typically denotes environmental compliance and specific packaging variations within the standard product line.

Replacement Considerations

The CD74HCT377E is the primary non-RoHS equivalent. Other compatible parts include the SN74HCT377 series. Verify pin compatibility and electrical parameters before substitution.