CD74HC377M

Overview

The CD74HC377M is an octal D-type flip-flop manufactured by Texas Instruments, belonging to the high-speed CMOS (HC) logic family. It features eight independent D-type flip-flops with positive-edge triggering and non-inverting outputs. The device operates within a supply voltage range of 2 V to 6 V and supports a maximum clock frequency of 23 MHz. Key electrical parameters include a typical propagation delay ranging from 10 ns to 50 ns, balanced output drive capabilities with peak currents of ±5.2 mA, and a maximum static supply current of 160 µA. It is housed in a 20-pin SOIC package and functions reliably across an extended temperature range of -55°C to +125°C.

Feature Summary

• Octal configuration providing eight independent D-type flip-flops for parallel data storage
• Positive-edge triggering mechanism synchronized with the clock signal input
• High-speed CMOS technology ensuring low power consumption and fast switching performance
• Balanced push-pull outputs delivering symmetrical drive strength for both high and low states

Applications

• Parallel-to-serial data conversion circuits
• Shift register implementations in digital systems
• General-purpose memory storage elements
• Timing and synchronization applications requiring multiple bit registers

Procurement Notes

Verify that the specific part number matches the HC series requirements rather than HCT or other variants, as input/output voltage thresholds differ significantly between families. Confirm the suffix indicates the correct SOIC-20 surface mount package. Ensure the component meets RoHS compliance standards if required by your manufacturing process. Check datasheet specifications for operating temperature ranges suitable for your environmental conditions.

Selection Notes

Select this component when an octal register with high-speed performance and wide voltage compatibility is needed. The HC series offers superior speed compared to standard 74C series devices while maintaining lower power dissipation than older TTL equivalents. Consider the 23 MHz clock limit and propagation delay characteristics for high-frequency designs. Evaluate the 20-pin SOIC footprint against available PCB space constraints.

Part Context

This device is part of the broader 74HC377 family, which includes various packaging options such as DIP, TSSOP, and SOIC. The 'M' suffix specifically denotes the small-outline integrated circuit (SOIC) package variant. It shares functional compatibility with other octal D-type flip-flops in the 74xx series but distinguishes itself through its specific CMOS technology and pinout configuration designed for modern surface-mount assembly techniques.

Replacement Considerations

CD74HC377M96

FAQ

What is the maximum clock frequency supported by the CD74HC377M?

The maximum clock frequency is 23 MHz.

Does the CD74HC377M have a clock enable feature?

No, the CD74HC377M does not include a clock enable input; it triggers on every positive edge of the clock signal.