SN74LS109ADRE4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Flip-Flop
• Characteristics: Dual J-K Positive-Edge-Triggered Flip-Flop with Clear and Preset
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: This IC is a dual J-K flip-flop with clear and preset functionality, designed for positive-edge-triggered applications.
• Packaging/Quantity: Available in reels of 2500 units.

Specifications

• Supply Voltage Range: 4.75V to 5.25V
• High-Level Input Voltage: 2V
• Low-Level Input Voltage: 0.8V
• High-Level Output Voltage: 2.7V
• Low-Level Output Voltage: 0.5V
• Maximum Operating Frequency: 33 MHz
• Propagation Delay Time: 15 ns
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The SN74LS109ADRE4 has a total of 16 pins. The pin configuration is as follows:

1. CLR (Clear) - Active low input for clearing the flip-flop.
2. CLK (Clock) - Positive-edge-triggered clock input.
3. PR (Preset) - Active low input for setting the flip-flop.
4. J (J Input) - Input for J logic level.
5. K (K Input) - Input for K logic level.
6. Q1 (Output Q1) - Output for first flip-flop.
7. Q1̅ (Complementary Output Q1) - Complementary output for first flip-flop.
8. GND (Ground) - Ground reference.
9. Q2 (Output Q2) - Output for second flip-flop.
10. Q2̅ (Complementary Output Q2) - Complementary output for second flip-flop.
11. VCC (Supply Voltage) - Positive supply voltage. 12-16. NC (No Connection) - These pins are not connected and should be left unconnected.

Functional Features

The SN74LS109ADRE4 is a versatile dual J-K flip-flop with clear and preset functionality. It is designed to operate in positive-edge-triggered applications, making it suitable for various digital circuits. The clear and preset inputs allow for easy initialization of the flip-flop's state. The flip-flop can store one bit of information per flip-flop, providing a reliable memory element for sequential logic circuits.

Advantages and Disadvantages

Advantages: - Dual flip-flop configuration allows for more complex circuit designs. - Clear and preset inputs provide flexibility in initializing the flip-flop's state. - Positive-edge-triggered operation ensures reliable data storage.

Disadvantages: - Limited operating frequency compared to some other flip-flop ICs. - Requires external components for proper functioning in a circuit.

Working Principles

The SN74LS109ADRE4 operates based on the principles of J-K flip-flops. When the clock input (CLK) transitions from low to high (positive edge), the current state of the flip-flop is transferred to the outputs (Q1 and Q2). The J and K inputs determine the next state of the flip-flop based on their logic levels. The clear (CLR) and preset (PR) inputs allow for clearing or setting the flip-flop to a specific state.

Detailed Application Field Plans

The SN74LS109ADRE4 can be used in various applications, including but not limited to: - Digital counters - Frequency dividers - Shift registers - Data storage elements - Control circuits

Its versatility and reliability make it suitable for both simple and complex digital systems.

Detailed and Complete Alternative Models

• SN74LS109AN
• SN74LS109ADR
• SN74LS109ADRG4
• SN74LS109ANE4

These alternative models offer similar functionality and characteristics, providing options for different package types or temperature ranges.

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