SN74AHC74DG4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Flip-Flop
• Characteristics: High-speed, low-power, dual D-type positive-edge-triggered flip-flop
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Digital logic component used for storing and transferring binary data
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 2 V to 5.5 V
• High-Level Input Voltage: 0.7 x VCC to VCC + 0.5 V
• Low-Level Input Voltage: -0.5 V to 0.3 x VCC
• High-Level Output Current: -8 mA
• Low-Level Output Current: 8 mA
• Operating Temperature Range: -40°C to 85°C
• Propagation Delay Time: 6 ns (typical)

Detailed Pin Configuration

The SN74AHC74DG4 has a total of 14 pins. The pin configuration is as follows:

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 (Power) - 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 with low power consumption
• Asynchronous clear and preset inputs for easy initialization
• Complementary and non-complementary outputs for versatile applications
• Wide supply voltage range allows compatibility with various systems

Advantages and Disadvantages

Advantages: - High-speed operation enables efficient data transfer - Low-power consumption for energy-efficient designs - Asynchronous clear and preset inputs provide flexibility in initialization - Versatile output options allow for diverse applications - Wide supply voltage range ensures compatibility with different systems

Disadvantages: - Limited to positive-edge triggering only - May require additional components for specific applications - Not suitable for high-voltage or high-current applications

Working Principles

The SN74AHC74DG4 is a dual D-type positive-edge-triggered flip-flop. It stores and transfers binary data based on the rising edge of the clock signal. The flip-flop has two data inputs (D) and two clock inputs (CLK). The complementary outputs (Q and Q̅) represent the stored data, while the clear (CLR) and preset (PRE) inputs allow for asynchronous initialization.

When the clock signal rises, the input data is transferred to the outputs. The clear input (CLR) can be used to reset the flip-flop to a known state, while the preset input (PRE) can set the flip-flop to a predefined state. The flip-flop operates within a specified supply voltage range and has a propagation delay time of 6 ns.

Detailed Application Field Plans

The SN74AHC74DG4 can be used in various digital logic applications, including but not limited to:

1. Sequential logic circuits
2. Data storage and transfer systems
3. Clock synchronization circuits
4. Frequency dividers
5. Counters and registers
6. Microcontrollers and microprocessors
7. Communication systems
8. Control systems

Detailed and Complete Alternative Models

1. SN74AHC74D - Similar specifications and pin configuration, but without the "G4" suffix indicating RoHS compliance.
2. MC74AHC74 - Equivalent flip-flop from a different manufacturer, Motorola (now NXP Semiconductors).
3. CD74AC74 - Alternative flip-flop with slightly different characteristics, such as higher operating temperature range.

These alternative models provide similar functionality and can be used as substitutes for the SN74AHC74DG4 in various applications.

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