CD74AC74ME4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Flip-Flop
• Characteristics: High-speed, low-power consumption
• Package: SOIC-14
• Essence: Dual D-Type Positive-Edge-Triggered Flip-Flop
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Logic Family: AC
• Number of Flip-Flops: 2
• Trigger Type: Positive Edge
• Clock Enable: Yes
• Propagation Delay: 5.5 ns (typical)
• Operating Voltage: 2V to 6V
• Operating Temperature: -40°C to +85°C

Detailed Pin Configuration

The CD74AC74ME4 has a total of 14 pins, which are assigned as follows:

1. CLR (Clear Input for both flip-flops)
2. D1 (Data Input for the first flip-flop)
3. CLK (Clock Input)
4. D2 (Data Input for the second flip-flop)
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. PRE (Preset Input for both flip-flops)
11. PR̅E (Complementary preset input for both flip-flops)
12. VCC (Positive Power Supply)
13. OE (Output Enable)
14. SET (Set Input for both flip-flops)

Functional Features

• Dual D-Type Flip-Flop with individual clear, preset, and clock enable inputs
• Positive-edge-triggered flip-flops for synchronous operation
• High-speed operation with low power consumption
• Output enable input for multiplexing applications

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient data processing - Low-power consumption helps in reducing energy usage - Individual control inputs provide flexibility in circuit design - Output enable feature enables multiplexing applications

Disadvantages: - Limited number of flip-flops (2 in this case) - Requires external components for complete functionality

Working Principles

The CD74AC74ME4 is a dual D-type positive-edge-triggered flip-flop. It operates based on the positive edge of the clock signal. The flip-flop stores data at the D input when the clock signal transitions from low to high. The stored data is then available at the respective Q outputs.

The clear (CLR) and preset (PRE) inputs allow for resetting or setting the flip-flop outputs, respectively. The clock enable (CLKEN) input controls whether the clock signal affects the flip-flop operation. The output enable (OE) input enables or disables the Q outputs.

Detailed Application Field Plans

The CD74AC74ME4 is widely used in various digital systems and applications, including:

1. Data storage and retrieval systems
2. Synchronous digital circuits
3. Communication systems
4. Microcontrollers and microprocessors
5. Timing and synchronization circuits
6. Register-based systems
7. Control systems

Detailed and Complete Alternative Models

1. SN74AC74: Similar dual D-type positive-edge-triggered flip-flop by Texas Instruments
2. MC74AC74: Dual D-type flip-flop with clear and preset inputs by ON Semiconductor
3. 74HC74: Dual D-type flip-flop with set and reset inputs by NXP Semiconductors
4. CD4013: Dual D-type flip-flop with complementary outputs by Texas Instruments

These alternative models offer similar functionality and can be used as replacements for the CD74AC74ME4 in various applications.

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