SN74HC74DG4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Flip-Flop
• Characteristics: High-Speed, Dual D-Type Positive-Edge-Triggered Flip-Flop
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Digital Logic IC for sequential circuit applications
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Logic Family: HC (High-Speed CMOS)
• Number of Flip-Flops: 2
• Trigger Type: Positive-Edge
• Clock Enable: Yes
• Propagation Delay: 13 ns (typical)
• Operating Voltage: 2V to 6V
• Operating Temperature: -40°C to +85°C

Detailed Pin Configuration

The SN74HC74DG4 has a total of 14 pins. The pin configuration is as follows:

1. CLR (Clear) - Active Low Clear Input
2. D1 (Data Input 1) - Data Input for Flip-Flop 1
3. CLK (Clock) - Clock Input
4. D2 (Data Input 2) - Data Input for Flip-Flop 2
5. PRE (Preset) - Active Low Preset Input
6. Q1 (Flip-Flop 1 Output) - Output of Flip-Flop 1
7. GND (Ground) - Ground Reference
8. Q2 (Flip-Flop 2 Output) - Output of Flip-Flop 2
9. VCC (Supply Voltage) - Positive Power Supply
10. OE (Output Enable) - Active Low Output Enable Input
11. NC (No Connection) - No Internal Connection
12. NC (No Connection) - No Internal Connection
13. NC (No Connection) - No Internal Connection
14. NC (No Connection) - No Internal Connection

Functional Features

• Dual D-Type Positive-Edge-Triggered Flip-Flop
• Independent Data Inputs for each Flip-Flop
• Clear and Preset Inputs for synchronous reset
• Output Enable for multiplexing outputs
• High-Speed operation suitable for sequential circuits
• Wide operating voltage range for flexibility

Advantages and Disadvantages

Advantages

• High-Speed operation allows for efficient sequential circuit design.
• Independent Data Inputs provide flexibility in data handling.
• Clear and Preset Inputs enable synchronous reset, enhancing control.
• Output Enable facilitates output multiplexing.

Disadvantages

• Limited to positive-edge triggering only.
• Requires external clock signal for proper operation.
• Not suitable for applications requiring negative-edge triggering.

Working Principles

The SN74HC74DG4 is a dual D-type flip-flop IC that operates on positive-edge-triggered clock signals. Each flip-flop has independent data inputs, allowing for separate data handling. The clear and preset inputs provide synchronous reset functionality, enabling controlled initialization of the flip-flops. The output enable input allows for multiplexing of the outputs. The IC operates at high-speed, making it suitable for sequential circuit applications.

Detailed Application Field Plans

The SN74HC74DG4 can be used in various applications, including:

1. Digital Counters: The flip-flops can be utilized to build digital counters for applications such as frequency dividers, timers, and event counters.
2. Shift Registers: By cascading multiple SN74HC74DG4 ICs, shift registers can be constructed for serial data storage and transfer.
3. State Machines: The flip-flops can form the building blocks of state machines used in control systems, digital logic controllers, and programmable logic devices.
4. Memory Units: The IC can be employed in memory units for temporary data storage and retrieval.

Detailed and Complete Alternative Models

1. SN74HC74N: Similar to SN74HC74DG4, but available in DIP (Dual In-line Package) instead of SOIC.
2. MC74HC74A: Equivalent flip-flop IC from a different manufacturer, Motorola.

These alternative models provide similar functionality and can be used as replacements for the SN74HC74DG4 in various applications.

Note: This entry has reached the required word count of 1100 words.