The DM74ACT74M is a dual positive-edge-triggered D-type flip-flop with preset and clear from National Semiconductor (now Texas Instruments). This device features a high-speed advanced CMOS technology, combining the low power consumption of CMOS with speeds comparable to bipolar logic. It is designed for use in high-performance memory registers, shift registers, and control circuits.

Applications:

• High-speed memory registers
• Shift registers
• Control circuits
• Data synchronization
• Buffering

Features:

• Dual D-type flip-flops in a single package
• Positive-edge triggering
• Direct clear and preset inputs
• High-speed operation: tpd = 5 ns (typical)
• Low power consumption
• Wide operating voltage range: 4.5V to 5.5V
• TTL compatible inputs
• Output drive capability: 15 LSTTL loads

Benefits:

• Simplifies circuit design by providing two flip-flops in one package.
• Enables synchronous data transfer with positive-edge triggering.
• Allows for asynchronous clearing and presetting of the flip-flops.
• Facilitates high-speed data processing.
• Minimizes power consumption, making it suitable for battery-powered applications.
• Ensures compatibility with a wide range of logic families.
• Reduces the number of components required, saving board space and cost.

Additional Details:

The DM74ACT74M is available in a SOIC (Small Outline Integrated Circuit) package. The device operates over a temperature range of -40°C to +85°C. The preset and clear functions are independent of the clock and data inputs. A low voltage on the clear (CLR) input sets the Q output low, and a low voltage on the preset (PRE) input sets the Q output high. Simultaneous assertion of the CLR and PRE inputs is not recommended, as the output state is unpredictable. The device is pin-compatible with the 74LS74 and 74HC74, providing a drop-in replacement for existing designs. It is also ESD protected.