DM74LS74AM

Product Overview

• Category: Integrated Circuit (IC)
• Use: Flip-Flop
• Characteristics: Dual D-Type Positive-Edge-Triggered Flip-Flop with Clear and Preset
• Package: 14-Pin Small Outline Integrated Circuit (SOIC)
• Essence: The DM74LS74AM is a versatile flip-flop IC that can store and manipulate digital information. It is widely used in various electronic devices and systems.
• Packaging/Quantity: Available in reels of 2500 units or tubes of 50 units.

Specifications

The DM74LS74AM has the following specifications:

• Supply Voltage: 4.75V to 5.25V
• High-Level Input Voltage: 2.0V min
• Low-Level Input Voltage: 0.8V max
• High-Level Output Voltage: 2.7V min
• Low-Level Output Voltage: 0.5V max
• Maximum Operating Frequency: 33 MHz
• Propagation Delay Time: 15 ns max
• Power Dissipation: 500 mW max

Pin Configuration

The DM74LS74AM has a 14-pin configuration as follows:

+---+--+---+ CLR --|1 +--+ 14|-- VCC D --|2 13|-- CLK Q --|3 12|-- Q' Q' --|4 11|-- PRE GND --|5 10|-- PR --|6 9|-- D' --|7 8|-- CLR' +----------+

Functional Features

The DM74LS74AM offers the following functional features:

• Dual D-type positive-edge-triggered flip-flops
• Clear and preset inputs for synchronous reset
• Direct overriding of clock and preset inputs
• High-speed operation with low power consumption
• TTL compatible inputs and outputs

Advantages and Disadvantages

Advantages of the DM74LS74AM include:

• Versatile flip-flop suitable for various applications
• High-speed operation allows for efficient data manipulation
• Clear and preset inputs provide flexibility in resetting the flip-flop
• Low power consumption helps conserve energy

Disadvantages of the DM74LS74AM include:

• Limited maximum operating frequency compared to some newer flip-flop ICs
• Requires careful handling due to its small size and delicate pins

Working Principles

The DM74LS74AM operates based on positive-edge-triggered flip-flop principles. It stores digital information in two separate D-type flip-flops, which can be cleared or preset using the corresponding inputs. The stored information can be accessed through the Q and Q' outputs. The flip-flop is synchronized by the CLK input, and changes in the D input are captured at the rising edge of the clock signal.

Detailed Application Field Plans

The DM74LS74AM finds applications in various fields, including:

1. Digital electronics: Used in logic circuits, counters, registers, and memory systems.
2. Communication systems: Employed in data transmission and reception circuits.
3. Control systems: Utilized for storing and manipulating control signals.
4. Computer systems: Integrated into microprocessors, arithmetic logic units (ALUs), and input/output (I/O) interfaces.
5. Consumer electronics: Found in televisions, audio systems, and home appliances.

Alternative Models

If the DM74LS74AM is not available or suitable for a particular application, alternative models that offer similar functionality include:

1. SN74LS74A: Dual D-Type Positive-Edge-Triggered Flip-Flop with Clear and Preset (Texas Instruments)
2. CD4013B: Dual D-Type Flip-Flop (RCA/CDIL)
3. MC74HC74A: Dual D-Type Flip-Flop with Set and Reset (Motorola)

These alternative models can be considered based on specific requirements and availability.

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