SN74F109DR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Flip-Flop
• Characteristics: Dual Positive-Edge-Triggered D-Type Flip-Flop with Set and Reset
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Reliable and versatile flip-flop IC
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 4.5V to 5.5V
• High-Level Input Voltage: 2V
• Low-Level Input Voltage: 0.8V
• High-Level Output Voltage: 2.4V
• Low-Level Output Voltage: 0.4V
• Maximum Operating Frequency: 100MHz
• Propagation Delay Time: 10ns
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The SN74F109DR has a total of 16 pins, which are assigned 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. PR (Preset) - Active-Low Preset Input
5. Q1 (Flip-Flop 1 Output) - Output of Flip-Flop 1
6. Q1' (Complementary Output of Flip-Flop 1) - Complementary Output of Flip-Flop 1
7. GND (Ground) - Ground Reference
8. Q2' (Complementary Output of Flip-Flop 2) - Complementary Output of Flip-Flop 2
9. Q2 (Flip-Flop 2 Output) - Output of Flip-Flop 2
10. PRE (Preset Enable) - Active-High Preset Enable Input
11. D2 (Data Input 2) - Data Input for Flip-Flop 2
12. CLR' (Complementary Clear) - Complementary Output of Clear Input
13. VCC (Supply Voltage) - Positive Supply Voltage
14. PR' (Complementary Preset) - Complementary Output of Preset Input
15. CLK' (Complementary Clock) - Complementary Output of Clock Input
16. PRE' (Complementary Preset Enable) - Complementary Output of Preset Enable Input

Functional Features

• Dual flip-flop design allows for independent operation of two separate flip-flops within a single IC package.
• Positive-edge-triggered functionality ensures reliable and synchronized data storage.
• Set and reset inputs provide control over the output state of the flip-flops.
• Complementary outputs allow for flexible integration with other digital circuits.

Advantages and Disadvantages

Advantages

• Compact and space-saving due to integration of two flip-flops in a single package.
• High-speed operation enables efficient data processing.
• Versatile functionality with set and reset inputs for flexible output control.
• Reliable performance with positive-edge triggering.

Disadvantages

• Limited to positive-edge triggering, may not be suitable for applications requiring negative-edge triggering.
• Requires external components for power supply and clock signal.

Working Principles

The SN74F109DR is a dual positive-edge-triggered D-type flip-flop. It stores data on the rising edge of the clock signal. The flip-flops can be independently controlled using the clear, preset, and preset enable inputs. The complementary outputs provide flexibility in connecting the flip-flops to other digital circuits.

Detailed Application Field Plans

The SN74F109DR is commonly used in various digital systems and applications, including:

1. Sequential logic circuits
2. Data storage and retrieval systems
3. Counters and frequency dividers
4. State machines and control units
5. Communication systems

Detailed and Complete Alternative Models

1. SN74F74D - Dual D-Type Positive-Edge-Triggered Flip-Flop with Clear
2. SN74F112D - Dual J-K Negative-Edge-Triggered Flip-Flop with Clear
3. SN74F175D - Quad D-Type Flip-Flop with Clear

These alternative models offer similar functionality and can be considered as replacements for the SN74F109DR in various applications.

In conclusion, the SN74F109DR is a reliable and versatile dual flip-flop IC. Its positive-edge-triggered design, set and reset inputs, and compact package make it suitable for a wide range of digital applications.