SN74HC109DR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Flip-Flop
• Characteristics: Dual J-K Positive-Edge-Triggered Flip-Flop with Clear and Preset
• Package: SOIC-16
• Essence: The SN74HC109DR is a dual J-K flip-flop IC that can be used in various digital applications.
• Packaging/Quantity: Available in reels of 2500 pieces.

Specifications

• Supply Voltage Range: 2V to 6V
• High-Level Input Voltage: 2V
• Low-Level Input Voltage: 0.8V
• High-Level Output Current: -4mA
• Low-Level Output Current: 4mA
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The SN74HC109DR has a total of 16 pins, which are assigned as follows:

1. CLR (Clear) - Active LOW clear input
2. PR (Preset) - Active LOW preset input
3. CP (Clock Pulse) - Clock pulse input
4. D (Data) - Data input for the first flip-flop
5. Q1 (Output) - Output of the first flip-flop
6. Q̅1 (Complementary Output) - Complementary output of the first flip-flop
7. GND (Ground) - Ground reference
8. Q̅2 (Complementary Output) - Complementary output of the second flip-flop
9. Q2 (Output) - Output of the second flip-flop
10. D (Data) - Data input for the second flip-flop
11. CP (Clock Pulse) - Clock pulse input
12. PR (Preset) - Active LOW preset input
13. CLR (Clear) - Active LOW clear input
14. VCC (Supply Voltage) - Positive supply voltage
15. GND (Ground) - Ground reference
16. NC (No Connection) - No connection

Functional Features

• Dual J-K flip-flop with independent clear and preset inputs.
• Positive-edge-triggered operation.
• Directly set or reset the flip-flops using the clear and preset inputs.
• Wide operating voltage range allows compatibility with various digital systems.
• High-speed operation for efficient data processing.

Advantages and Disadvantages

Advantages: - Dual flip-flop design provides flexibility in digital circuit applications. - Independent clear and preset inputs allow for easy control of the flip-flops. - High-speed operation enables efficient data processing.

Disadvantages: - Limited to positive-edge-triggered operation. - Requires careful handling and static protection due to its integrated circuit nature.

Working Principles

The SN74HC109DR operates as a dual J-K flip-flop. It is triggered by the positive edge of the clock pulse input (CP). The flip-flops can be set or reset using the clear (CLR) and preset (PR) inputs, respectively. The data inputs (D) control the state of the flip-flops when the clock pulse occurs. The outputs (Q1, Q2) represent the current state of the flip-flops.

Detailed Application Field Plans

The SN74HC109DR can be used in various digital applications, including but not limited to: - Sequential logic circuits - Counters and dividers - Data storage and retrieval systems - Control systems - Communication systems

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the SN74HC109DR are: - CD4013BE: Dual D-Type Flip-Flop - 74LS73: Dual JK Flip-Flop with Clear - MC14027B: Dual J-K Flip-Flop with Set and Reset

These alternative models can be considered based on specific application requirements and availability.

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