CD74HC109E

Product Overview

• Category: Integrated Circuit
• Use: Digital Logic
• Characteristics: High-Speed, Dual J-K Flip-Flop with Clear
• Package: 16-Pin PDIP (Plastic Dual In-Line Package)
• Essence: The CD74HC109E is a dual J-K flip-flop with clear, designed for high-speed digital logic applications.
• Packaging/Quantity: Available in tubes of 25 pieces or reels of 2,000 pieces.

Specifications

The CD74HC109E has the following specifications:

• Supply Voltage Range: 2V to 6V
• High-Speed Operation: 14ns typical propagation delay
• Output Drive Capability: 10 LSTTL loads
• Low Power Consumption: 20µA maximum ICC
• Schmitt Trigger Inputs: Provides hysteresis for improved noise immunity
• Wide Operating Temperature Range: -55°C to +125°C

Pin Configuration

The CD74HC109E has a 16-pin PDIP package with the following pin configuration:

1. CLR (Clear Input 1)
2. CLK (Clock Input 1)
3. J (J Input 1)
4. K (K Input 1)
5. Q (Output 1)
6. Q̅ (Complementary Output 1)
7. GND (Ground)
8. Q̅ (Complementary Output 2)
9. Q (Output 2)
10. K (K Input 2)
11. J (J Input 2)
12. CLK (Clock Input 2)
13. CLR (Clear Input 2)
14. VCC (Positive Supply Voltage)
15. NC (No Connection)
16. NC (No Connection)

Functional Features

The CD74HC109E offers the following functional features:

• Dual J-K flip-flop with independent clock and clear inputs
• High-speed operation for efficient digital logic applications
• Schmitt trigger inputs provide improved noise immunity
• Clear input allows for synchronous reset of the flip-flop
• Complementary outputs provide both true and inverted signals

Advantages and Disadvantages

Advantages of the CD74HC109E include:

• High-speed operation enables efficient digital circuit design.
• Schmitt trigger inputs improve noise immunity, ensuring reliable operation.
• Dual flip-flop configuration provides flexibility in circuit design.

Disadvantages of the CD74HC109E include:

• Limited supply voltage range (2V to 6V).
• Not suitable for applications requiring higher output drive capability.

Working Principles

The CD74HC109E operates based on the principles of J-K flip-flops. It utilizes clock signals to latch and store data at its inputs (J and K). The clear input allows for synchronous reset of the flip-flop, clearing the stored data. The complementary outputs provide both true and inverted versions of the stored data.

Application Field Plans

The CD74HC109E can be used in various digital logic applications, including:

1. Counters and frequency dividers
2. Shift registers
3. Data storage and retrieval systems
4. Control circuits
5. Clock synchronization circuits

Alternative Models

If the CD74HC109E is not available or suitable for a particular application, alternative models that offer similar functionality include:

1. SN74HC109 - Texas Instruments
2. MC74HC109 - ON Semiconductor
3. 74HC109 - NXP Semiconductors

These alternative models can be considered as replacements for the CD74HC109E, depending on specific requirements and availability.

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