CD74HC74MT

Product Overview

• Category: Integrated Circuit
• Use: Digital Logic Flip-Flop
• Characteristics: High-Speed, Dual D-Type Positive-Edge-Triggered Flip-Flop
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: Reliable and efficient digital logic component
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage: 2V to 6V
• Logic Family: HC (High-Speed CMOS)
• Number of Flip-Flops: 2
• Trigger Type: Positive Edge
• Clock Frequency: Up to 25 MHz
• Propagation Delay: 9 ns (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The CD74HC74MT has a total of 14 pins. The pin configuration is as follows:

1. CLR (Clear Input for both flip-flops)
2. D1 (Data Input for the first flip-flop)
3. CLK (Clock Input)
4. PR (Preset Input for both flip-flops)
5. Q1 (Output of the first flip-flop)
6. Q1̅ (Complementary Output of the first flip-flop)
7. GND (Ground)
8. Q2 (Output of the second flip-flop)
9. Q2̅ (Complementary Output of the second flip-flop)
10. VCC (Positive Power Supply)
11. D2 (Data Input for the second flip-flop)
12. PRE (Preset Enable Input)
13. CLR̅ (Complementary Clear Input for both flip-flops)
14. OE (Output Enable)

Functional Features

• Dual D-Type Flip-Flop: The CD74HC74MT contains two independent D-type flip-flops, allowing for simultaneous operation.
• Positive Edge Triggered: The flip-flops are triggered by the rising edge of the clock signal, ensuring accurate timing.
• High-Speed Operation: With a maximum clock frequency of 25 MHz, the CD74HC74MT is suitable for high-speed digital applications.
• Clear and Preset Inputs: The clear and preset inputs allow for easy initialization and control of the flip-flops.
• Output Enable Function: The output enable input (OE) can be used to disable the outputs when necessary.

Advantages and Disadvantages

Advantages: - High-speed operation enables efficient digital circuit design. - Dual flip-flop configuration provides flexibility in various applications. - Clear and preset inputs simplify initialization and control. - Output enable function allows for output disabling when needed.

Disadvantages: - Limited voltage supply range (2V to 6V). - Propagation delay of 9 ns may not be suitable for ultra-high-speed applications.

Working Principles

The CD74HC74MT operates based on the principles of positive-edge-triggered flip-flops. When the clock input (CLK) receives a rising edge, the data input (D1 or D2) is transferred to the corresponding output (Q1 or Q2). The clear (CLR) and preset (PR) inputs allow for initialization and control of the flip-flops. The output enable (OE) input can be used to disable the outputs when required.

Detailed Application Field Plans

The CD74HC74MT is widely used in various digital logic applications, including:

1. Counters and Registers: The dual flip-flop configuration makes it suitable for building counters and registers in digital systems.
2. State Machines: The positive-edge-triggered operation is ideal for implementing state machines and sequential logic circuits.
3. Data Storage: The flip-flops can be used to store and manipulate data in microcontrollers, memory systems, and data processing units.
4. Clock Synchronization: The CD74HC74MT can be utilized for synchronizing signals and ensuring proper timing in digital circuits.

Detailed and Complete Alternative Models

• SN74HC74N: Similar dual D-type flip-flop with a different package (DIP-14).
• MC74HC74A: Dual positive-edge-triggered D-type flip-flop with improved noise immunity.
• CD4013BM: Dual D-type flip-flop with complementary outputs and higher voltage supply range.

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