ON Semiconductor
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DM74AS74M
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DM74AS74M

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Flip-flop
  • Characteristics: High-speed, dual D-type positive-edge-triggered flip-flop
  • Package: 14-pin plastic dual in-line package (DIP)
  • Essence: The DM74AS74M is a versatile flip-flop IC that can store and transfer binary data. It is widely used in digital electronics for various applications.
  • Packaging/Quantity: Available in reels or tubes, with quantities varying based on customer requirements.

Specifications

  • Supply Voltage: 4.75V to 5.25V
  • Operating Temperature: -55°C to +125°C
  • Propagation Delay: 8ns (typical)
  • Output Current: ±8mA
  • Input Voltage: 0V to VCC
  • Output Voltage: 0V to VCC

Detailed Pin Configuration

The DM74AS74M has a total of 14 pins, each serving a specific purpose:

  1. CLR (Clear) - Active LOW clear input
  2. D (Data) - Data input
  3. CLK (Clock) - Clock input
  4. Q (Output) - Complementary output
  5. Q̅ (Output) - Non-complementary output
  6. GND (Ground) - Ground reference
  7. Q̅ (Output) - Non-complementary output
  8. Q (Output) - Complementary output
  9. VCC (Positive Supply) - Positive power supply
  10. PRE (Preset) - Active LOW preset input
  11. D (Data) - Data input
  12. CLK (Clock) - Clock input
  13. CLR (Clear) - Active LOW clear input
  14. GND (Ground) - Ground reference

Functional Features

  • Dual D-type positive-edge-triggered flip-flop
  • High-speed operation
  • Asynchronous clear and preset inputs for easy initialization
  • Complementary and non-complementary outputs for flexible usage
  • Wide operating temperature range for various environments

Advantages and Disadvantages

Advantages

  • High-speed operation allows for efficient data transfer
  • Versatile flip-flop suitable for a wide range of applications
  • Asynchronous clear and preset inputs simplify initialization process
  • Complementary and non-complementary outputs provide flexibility in circuit design

Disadvantages

  • Limited supply voltage range (4.75V to 5.25V)
  • Propagation delay of 8ns may not be suitable for ultra-high-speed applications

Working Principles

The DM74AS74M operates as a dual D-type positive-edge-triggered flip-flop. It stores and transfers binary data based on the clock input. The clear and preset inputs allow for asynchronous initialization of the flip-flop. The complementary and non-complementary outputs provide flexibility in circuit design.

Detailed Application Field Plans

The DM74AS74M can be used in various digital electronic applications, including:

  1. Sequential logic circuits
  2. Data storage systems
  3. Counters and timers
  4. Registers and shift registers
  5. Memory units
  6. Control systems

Detailed and Complete Alternative Models

  1. SN74LS74A: Similar dual D-type positive-edge-triggered flip-flop with slightly different specifications.
  2. CD4013B: CMOS dual D-type flip-flop with similar functionality but lower power consumption.
  3. MC74HC74A: High-speed CMOS dual D-type flip-flop with comparable characteristics.

These alternative models offer similar functionality and can be considered as substitutes for the DM74AS74M based on specific requirements.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací DM74AS74M v technických řešeních

Sure! Here are 10 common questions and answers related to the application of DM74AS74M in technical solutions:

  1. Q: What is DM74AS74M? A: DM74AS74M is a dual D-type flip-flop integrated circuit (IC) that can store one bit of data.

  2. Q: What is the purpose of using DM74AS74M in technical solutions? A: DM74AS74M is commonly used for sequential logic applications, such as storing and transferring data in digital circuits.

  3. Q: How many flip-flops are there in DM74AS74M? A: DM74AS74M consists of two independent D-type flip-flops.

  4. Q: What is the maximum clock frequency supported by DM74AS74M? A: The maximum clock frequency supported by DM74AS74M is typically around 100 MHz.

  5. Q: Can DM74AS74M be used for edge-triggered or level-triggered operations? A: DM74AS74M is designed for positive-edge triggered operations, meaning it responds to changes on the rising edge of the clock signal.

  6. Q: What is the power supply voltage range for DM74AS74M? A: The power supply voltage range for DM74AS74M is typically between 4.75V and 5.25V.

  7. Q: Does DM74AS74M have any built-in asynchronous inputs? A: Yes, DM74AS74M has asynchronous set and reset inputs that allow for immediate state changes regardless of the clock signal.

  8. Q: Can DM74AS74M be cascaded to create larger storage capacities? A: Yes, multiple DM74AS74M ICs can be cascaded together to create larger storage capacities or to build more complex sequential logic circuits.

  9. Q: What is the output logic level of DM74AS74M? A: The output logic level of DM74AS74M is compatible with both TTL (Transistor-Transistor Logic) and CMOS (Complementary Metal-Oxide-Semiconductor) logic families.

  10. Q: Are there any specific precautions to consider when using DM74AS74M? A: It is important to ensure proper decoupling capacitors are used near the power supply pins of DM74AS74M to minimize noise and voltage fluctuations. Additionally, care should be taken to avoid exceeding the maximum ratings specified in the datasheet to prevent damage to the IC.

Please note that the answers provided here are general and may vary depending on the specific datasheet and manufacturer's guidelines for DM74AS74M.