CD74AC109E

Product Overview

Category: Integrated Circuit (IC)
Use: Flip-Flop
Characteristics: Dual JK Positive Edge-Triggered Flip-Flop with Clear and Preset
Package: 16-pin DIP (Dual In-line Package)
Essence: The CD74AC109E is a versatile flip-flop IC that can store and manipulate binary information in electronic circuits.
Packaging/Quantity: Available in reels or tubes, with 25 units per reel/tube.

Specifications

Supply Voltage Range: 2V to 6V
High-Level Input Voltage: 2V
Low-Level Input Voltage: 0.8V
High-Level Output Current: -24mA
Low-Level Output Current: 24mA
Operating Temperature Range: -40°C to 85°C

Detailed Pin Configuration

The CD74AC109E has a total of 16 pins, which are assigned specific functions:

CLR (Clear) - Active LOW input for clearing the flip-flop.
PR (Preset) - Active LOW input for setting the flip-flop.
CP (Clock Pulse) - Positive edge-triggered clock input.
J (Data Input J) - Input for J data.
K (Data Input K) - Input for K data.
Q (Output Q) - Output for Q data.
Q̅ (Complementary Output Q̅) - Complementary output for Q data.
GND (Ground) - Ground reference for the IC.
Q̅ (Complementary Output Q̅) - Complementary output for Q data.
Q (Output Q) - Output for Q data.
K (Data Input K) - Input for K data.
J (Data Input J) - Input for J data.
CP (Clock Pulse) - Positive edge-triggered clock input.
PR (Preset) - Active LOW input for setting the flip-flop.
CLR (Clear) - Active LOW input for clearing the flip-flop.
VCC (Supply Voltage) - Positive supply voltage for the IC.

Functional Features

Dual JK Flip-Flop: The CD74AC109E consists of two independent JK flip-flops, allowing for simultaneous storage and manipulation of two sets of binary information.
Positive Edge-Triggered: The flip-flop is triggered by a positive edge transition of the clock pulse, ensuring accurate timing and synchronization.
Clear and Preset Inputs: The clear (CLR) and preset (PR) inputs provide control over the initial state of the flip-flop, allowing for easy initialization.
High-Speed Operation: The CD74AC109E operates at high speeds, making it suitable for applications requiring rapid data processing.

Advantages and Disadvantages

Advantages: - Versatile functionality with dual flip-flops. - Accurate timing and synchronization with positive edge-triggering. - Easy initialization with clear and preset inputs. - High-speed operation for rapid data processing.

Disadvantages: - Limited to positive edge-triggering, may not be suitable for applications requiring negative edge-triggering. - Requires external components for power supply and interfacing.

Working Principles

The CD74AC109E operates based on the principles of JK flip-flops. It stores binary information using two inputs, J and K, which represent the desired data. The flip-flop is triggered by a positive edge transition of the clock pulse (CP), causing the stored data to be transferred to the outputs Q and Q̅. The clear (CLR) and preset (PR) inputs allow for initialization of the flip-flop's state. The IC operates at high speeds, making it suitable for various applications.

Detailed Application Field Plans

The CD74AC109E can be used in a wide range of applications, including:

Digital Counters: The flip-flop's ability to store and manipulate binary information makes it ideal for use in digital counters, allowing for accurate counting and sequencing.
Data Storage: The IC can be used to store data in electronic systems, such as registers or memory units.
Synchronous Logic Circuits: The positive edge-triggered functionality of the flip-flop enables its use in synchronous logic circuits, ensuring proper timing and synchronization.
Control Systems: The CD74AC109E can be employed in control systems to store and manipulate control signals, enabling precise control over various processes.

Detailed and Complete Alternative Models

SN74LS109AN: Similar dual JK flip-flop IC with clear and preset inputs, operating at a lower voltage range (2V to 5.5V).
MC74HC109N: Dual JK flip-flop IC with clear and preset inputs, operating at a higher voltage range (2V to

Listen Sie 10 häufige Fragen und Antworten im Zusammenhang mit der Anwendung von CD74AC109E in technischen Lösungen auf

Sure! Here are 10 common questions and answers related to the application of CD74AC109E in technical solutions:

Q: What is CD74AC109E? A: CD74AC109E is a dual positive-edge-triggered JK flip-flop integrated circuit (IC) that can be used in various digital applications.
Q: What is the operating voltage range for CD74AC109E? A: CD74AC109E operates within a voltage range of 2V to 6V.
Q: What is the maximum clock frequency supported by CD74AC109E? A: CD74AC109E can support clock frequencies up to 100 MHz.
Q: How many flip-flops are present in CD74AC109E? A: CD74AC109E contains two independent JK flip-flops.
Q: What is the purpose of the J and K inputs in CD74AC109E? A: The J and K inputs are used to control the state of the flip-flops. They determine whether the output will toggle, hold, or reset based on the clock input.
Q: Can CD74AC109E be used for synchronous or asynchronous operation? A: CD74AC109E is designed for synchronous operation, meaning the outputs change only when the clock signal transitions from low to high.
Q: What is the typical propagation delay of CD74AC109E? A: The typical propagation delay of CD74AC109E is around 8 ns.
Q: Does CD74AC109E have any built-in preset or clear functionality? A: No, CD74AC109E does not have built-in preset or clear functionality. However, external logic can be used to achieve these functions.
Q: Can CD74AC109E be cascaded to create larger counters or registers? A: Yes, CD74AC109E can be cascaded with other flip-flops to create larger counters or registers for more complex applications.
Q: What are some common applications of CD74AC109E? A: CD74AC109E is commonly used in digital systems for tasks such as frequency division, data synchronization, counter circuits, and general-purpose flip-flop applications.

Please note that the answers provided here are general and may vary depending on specific circuit designs and requirements.