CD74AC109EG4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Digital Logic
• Characteristics: Dual JK Positive Edge-Triggered Flip-Flop
• Package: 16-pin SOIC (Small Outline Integrated Circuit)
• Essence: High-speed, low-power flip-flop for digital applications
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

The CD74AC109EG4 is a dual JK positive edge-triggered flip-flop integrated circuit. It operates on a supply voltage range of 2V to 6V, making it suitable for various digital logic applications. The flip-flop has two independent sections, each with a J and K input, a clock input, and complementary Q and Q̅ outputs.

Detailed Pin Configuration

The CD74AC109EG4 package consists of 16 pins arranged as follows:

1. J1 - Input J for the first flip-flop section
2. K1 - Input K for the first flip-flop section
3. CP1 - Clock input for the first flip-flop section
4. Q1 - Output Q for the first flip-flop section
5. Q̅1 - Complementary output Q̅ for the first flip-flop section
6. GND - Ground
7. Q̅2 - Complementary output Q̅ for the second flip-flop section
8. Q2 - Output Q for the second flip-flop section
9. CP2 - Clock input for the second flip-flop section
10. K2 - Input K for the second flip-flop section
11. J2 - Input J for the second flip-flop section
12. VCC - Supply voltage 13-16. NC - No connection

Functional Features

• Positive edge-triggered operation
• Asynchronous clear input (CLR̅) for both flip-flop sections
• Direct overriding of clock and clear inputs
• High-speed operation with minimal propagation delay
• Low power consumption
• Schmitt-triggered clock input for noise immunity

Advantages and Disadvantages

Advantages

• High-speed operation allows for efficient digital signal processing.
• Low power consumption makes it suitable for battery-powered devices.
• Schmitt-triggered clock input ensures reliable operation in noisy environments.
• Dual flip-flop sections provide flexibility in circuit design.

Disadvantages

• Limited functionality compared to more complex flip-flop types.
• Not suitable for applications requiring advanced sequential logic operations.

Working Principles

The CD74AC109EG4 operates as a positive edge-triggered flip-flop. On the rising edge of the clock input (CP1 or CP2), the state of the J and K inputs is captured and stored in the respective flip-flop section. The outputs Q and Q̅ reflect the stored state and change accordingly on subsequent clock edges.

The asynchronous clear input (CLR̅) can be used to reset the flip-flop sections to a known state, overriding the clock input. The CLR̅ input is active-low, meaning that a low signal clears the flip-flop.

Detailed Application Field Plans

The CD74AC109EG4 is commonly used in various digital systems and applications, including:

1. Counters and frequency dividers
2. Shift registers
3. State machines
4. Data storage and retrieval circuits
5. Synchronous data transfer systems

Its high-speed operation and low power consumption make it suitable for applications where efficient digital signal processing is required.

Detailed and Complete Alternative Models

There are several alternative models available that offer similar functionality to the CD74AC109EG4. Some notable alternatives include:

1. SN74LS109AN
2. MC74HC109N
3. CD40109BE

These alternatives may have slight variations in specifications, pin configuration, or package type, but they serve the same purpose of a dual JK positive edge-triggered flip-flop.

In conclusion, the CD74AC109EG4 is a versatile integrated circuit used in digital logic applications. Its high-speed operation, low power consumption, and flexible functionality make it a popular choice for various digital systems.