MC74HC74AFL1

Flip Flops Overview

The MC74HC74AFL1 is a dual D-type flip-flop manufactured by onsemi, belonging to the 74HC logic family. It features two independent positive-edge-triggered D flip-flops with asynchronous Set and Reset inputs. The device utilizes high-performance silicon-gate CMOS technology, offering low power consumption and high noise immunity. It operates within a supply voltage range of 2.0 V to 6.0 V and provides complementary outputs (Q and Q̅) for each flip-flop. The component is housed in a 14-SOIC package and is designed for compatibility with standard CMOS, NMOS, and TTL loads.

Flip Flops Feature Summary

• Dual D-type flip-flop architecture with individual Set, Reset, and Clock inputs for each element
• Positive-edge triggering mechanism transfers data from D-input to Q-output synchronously
• Asynchronous Set and Reset functions operate independently of the clock signal
• High noise immunity and low input current characteristics typical of CMOS technology

Flip Flops Applications

• Digital data storage and register circuits
• Shift register implementations
• Timing and control logic systems
• State machine design

Flip Flops Procurement Notes

Verify the specific suffix FL1 against official datasheets to confirm package dimensions and tape-and-reel specifications. Confirm RoHS compliance status as legacy variants may differ. Check for obsolescence notices or PCN documents regarding manufacturing changes. Ensure the supplier provides valid traceability documentation for quality assurance purposes.

Flip Flops Selection Notes

Select this component when dual independent D-latch functionality is required in a compact SOIC package. It serves as a direct pin-compatible replacement for LS74 equivalents in mixed-signal designs. Consider the 2V-6V operating range for applications requiring flexible voltage levels. Verify input compatibility with driving sources, noting that pull-up resistors may be needed for LSTTL interface compatibility.

Flip Flops Part Context

This part belongs to the widely adopted 74HC series of high-speed CMOS logic devices. The 74HC74 variant specifically addresses the need for dual edge-triggered storage elements in digital systems. It bridges the performance gap between older LS-TTL logic and modern low-power CMOS solutions, maintaining functional compatibility while reducing power consumption.

Flip Flops Replacement Considerations

Direct pin-compatible substitutes include the SN74HC74NSR from Texas Instruments and the 74HC74PW from Nexperia. These alternatives offer similar electrical characteristics and logical functionality for design migration purposes.