MM74HCT74MTC

Flip Flops Overview

The MM74HCT74MTC is a dual D-type flip-flop manufactured by onsemi, belonging to the 74HCT logic series. It features two independent positive-edge-triggered circuits in a single package. The device operates within a supply voltage range of 4.5V to 5.5V and supports set and reset functions. It utilizes a 14-TSSOP surface-mount package with a width of 4.40mm. Key electrical parameters include a maximum propagation delay of 35ns at 5V with 50pF load, output currents of 4.8mA for both high and low states, and a static current of 2µA. The input capacitance is specified at 5pF, and the clock frequency rating is 27MHz.

Flip Flops Feature Summary

• Dual D-type flip-flop configuration with independent data, preset, clear, and clock inputs
• Positive-edge triggering mechanism for data transfer to outputs
• Preset and clear functions operate independently of the clock signal via low-level activation
• CMOS technology providing high noise immunity and low power consumption

Flip Flops Applications

• Parallel-to-serial data conversion circuits
• Shift register implementations
• Register file storage elements
• Timing control and synchronization logic

Flip Flops Procurement Notes

Verify the specific suffix against official documentation to confirm packaging type, as 'MTC' typically denotes tube packaging while 'MTCX' indicates tape and reel. Confirm RoHS compliance status through the manufacturer's environmental declaration. Ensure the operating temperature range meets system requirements, as this component supports -40°C to +85°C. Cross-reference the datasheet revision history for any pinout or electrical specification updates prior to final procurement.

Flip Flops Selection Notes

Select this component when a dual D-type flip-flop solution is required within the 74HCT family for TTL-compatible logic levels. Consider the 14-TSSOP package for space-constrained surface-mount designs. Evaluate the 35ns propagation delay and 27MHz clock limit against circuit timing requirements. Compare against similar parts like the MM74HC74 if higher speed or different drive capabilities are needed, noting that HC and HCT families differ in voltage thresholds.

Flip Flops Part Context

This part belongs to the MM74HCT series, which combines CMOS technology with TTL-compatible input thresholds. It is functionally compatible with the standard 74LS logic family but offers lower power consumption. The 74HCT74 variant specifically provides two D-type flip-flops, distinguishing it from single-flip-flop variants like the 74HCT74A or octal variants like the 74HCT574. It is widely used in digital systems requiring reliable state storage and data synchronization.

Flip Flops Replacement Considerations

Public confirmed substitute part numbers include MM74HCT74MTCX (tape and reel version) and MM74HCT74MX (SOIC package). Other manufacturers may offer equivalent parts such as SN74HCT74N, but verification of pinout and electrical characteristics against the original datasheet is essential before substitution.