DM74AS74M

Overview

The DM74AS74M is a dual D-type flip-flop manufactured by Fairchild Semiconductor, belonging to the Advanced Schottky (AS) logic family. It features positive-edge triggering and separate clock inputs for each flip-flop within a single package. The device provides both true and complement outputs for independent signal routing. It operates with a supply voltage range of 4.5V to 5.5V and supports a maximum operating temperature of 85°C. The component utilizes a 14-pin Small Outline Integrated Circuit (SOIC) surface-mount package, designed for high-speed digital applications requiring low power dissipation relative to standard Schottky TTL.

Feature Summary

• Dual D-type flip-flops with positive-edge triggering
• Separate clock inputs for independent operation
• True and complement output availability
• Advanced oxide-isolated ion-implanted Schottky process

Applications

• High-speed data storage registers
• Shift register implementations
• Parallel-to-serial conversion circuits
• Frequency division and counting logic

Procurement Notes

Verify the manufacturer source carefully, as Fairchild Semiconductor's logic portfolio was acquired by onsemi. Ensure the specific part number matches current production status or obsolescence notices from authorized distributors. Confirm that the SOIC package variant aligns with your PCB footprint requirements. Request official datasheets to validate pinout compatibility and electrical specifications before finalizing procurement orders.

Selection Notes

Select this component when system design requires dual edge-triggered storage elements with high switching speeds. The Advanced Schottky technology offers superior performance compared to standard LS series while maintaining lower power consumption than original Schottky variants. Consider the 14-pin SOIC form factor for surface-mount assembly constraints. Evaluate the 4.5V to 5.5V supply requirement against existing system voltage rails to ensure proper logic level interfacing.

Part Context

This device belongs to the DM74ASxx series, representing Fairchild's Advanced Schottky logic line. This family bridges the performance gap between standard TTL and high-speed CMOS technologies. The AS series is characterized by fast propagation delays and robust drive capabilities suitable for memory and communication systems. The DM74AS74M specifically addresses designs needing compact dual flip-flop solutions in surface-mount formats.

Replacement Considerations

• DM74AS74N
• DM74AS74WM