Encyclopedia Entry: 74F109SC

Product Information Overview

• Category: Integrated Circuit (IC)
• Use: Digital Logic Flip-Flop
• Characteristics: High-speed, Dual Positive Edge-Triggered D-Type Flip-Flop
• Package: 16-pin Small Outline Integrated Circuit (SOIC)
• Essence: Reliable and efficient storage element for digital circuits
• Packaging/Quantity: Available in reels of 2500 units

Specifications

The 74F109SC is a dual positive edge-triggered D-type flip-flop integrated circuit. It operates on a supply voltage range of 4.5V to 5.5V and can handle a maximum clock frequency of 100 MHz. The flip-flop has two independent data inputs (D1 and D2), two clock inputs (CLK1 and CLK2), and two complementary outputs (Q and Q̅). It features a preset (PRE) and clear (CLR) function, allowing for synchronous reset and initialization of the flip-flop.

Detailed Pin Configuration

The 74F109SC has a 16-pin Small Outline Integrated Circuit (SOIC) package. The pin configuration is as follows:

1. CLR - Clear Input
2. D1 - Data Input 1
3. CLK1 - Clock Input 1
4. PRE - Preset Input
5. Q1 - Output 1
6. Q̅1 - Complementary Output 1
7. GND - Ground
8. Q̅2 - Complementary Output 2
9. Q2 - Output 2
10. VCC - Supply Voltage
11. CLK2 - Clock Input 2
12. D2 - Data Input 2
13. SET - Set Input
14. GND - Ground
15. Q̅2 - Complementary Output 2
16. Q2 - Output 2

Functional Features

The 74F109SC is designed to store and synchronize digital data in electronic circuits. It offers the following functional features:

• Dual flip-flop design allows for independent storage of two sets of data.
• Positive edge-triggered operation ensures reliable data capture on rising clock edges.
• Preset and clear inputs enable synchronous reset and initialization of the flip-flop.
• Complementary outputs provide both true and inverted versions of the stored data.

Advantages and Disadvantages

Advantages: - High-speed operation suitable for demanding digital applications. - Dual flip-flop configuration increases flexibility in circuit design. - Synchronous reset and initialization capability enhances system reliability.

Disadvantages: - Limited voltage supply range (4.5V to 5.5V). - Requires external clock signals for proper operation.

Working Principles

The 74F109SC operates based on positive edge-triggered D-type flip-flop principles. When a rising edge is detected on either CLK1 or CLK2 input, the data present at the corresponding D1 or D2 input is captured and stored in the flip-flop. The stored data can be accessed through the Q and Q̅ outputs. The preset (PRE) and clear (CLR) inputs allow for synchronous reset and initialization of the flip-flop, respectively.

Detailed Application Field Plans

The 74F109SC is widely used in various digital systems and applications, including:

1. Microprocessors and microcontrollers
2. Data storage and retrieval systems
3. Communication devices
4. Digital signal processing circuits
5. Control systems and automation

Its high-speed operation, dual flip-flop design, and synchronous reset capability make it suitable for applications that require reliable and efficient data storage and synchronization.

Detailed and Complete Alternative Models

Some alternative models to the 74F109SC include:

1. 74LS109: Low-power Schottky version of the dual positive edge-triggered D-type flip-flop.
2. 74HC109: High-speed CMOS version with similar functionality.
3. 74HCT109: High-speed CMOS version with TTL-compatible inputs and outputs.

These alternative models offer similar functionality but may have differences in power consumption, voltage levels, or package types.