CD74HCT4020E

Product Overview

• Category: Integrated Circuit
• Use: Binary Counter
• Characteristics: High-speed operation, low power consumption
• Package: 16-pin DIP (Dual Inline Package)
• Essence: CMOS logic device for counting binary signals
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 2V to 6V
• Operating Temperature Range: -55°C to +125°C
• Maximum Clock Frequency: 25 MHz
• Number of Stages: 14
• Output Current: ±4mA
• Propagation Delay Time: 20 ns (typical)

Detailed Pin Configuration

1. Clock Input (CP)
2. Reset Input (MR)
3. Enable Input (EN)
4. Data Input (D)
5. Output Q12
6. Output Q13
7. Output Q14
8. Ground (GND)
9. Output Q11
10. Output Q10
11. Output Q9
12. Output Q8
13. Output Q7
14. Output Q6
15. VCC
16. Output Q5

Functional Features

• Asynchronous Reset: The MR pin allows resetting the counter to zero.
• Enable Control: The EN pin enables or disables the counting operation.
• Ripple Carry Output: The Q5-Q14 pins provide the binary count output.
• Schmitt Trigger Inputs: The CP and MR inputs have Schmitt trigger characteristics for noise immunity.

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient counting of binary signals. - Low power consumption makes it suitable for battery-powered applications. - Wide supply voltage range provides flexibility in various electronic systems. - Schmitt trigger inputs ensure reliable operation in noisy environments.

Disadvantages: - Limited number of stages (14) may not be sufficient for complex counting applications. - Propagation delay time may affect the accuracy of high-frequency counting.

Working Principles

The CD74HCT4020E is a 14-stage binary counter that utilizes CMOS technology. It counts binary signals based on clock pulses applied to the CP input. The counter advances by one with each rising edge of the clock signal. The MR pin allows resetting the counter to zero asynchronously. The EN pin enables or disables the counting operation. The binary count output is available on the Q5-Q14 pins.

Detailed Application Field Plans

1. Frequency Division: The CD74HCT4020E can be used to divide the frequency of an input signal by powers of 2, making it suitable for frequency division applications.
2. Time Delay Generation: By utilizing the propagation delay of the counter, precise time delays can be generated in various electronic circuits.
3. Event Counting: The counter can be used to count events or pulses in applications such as digital timers, frequency meters, and industrial control systems.

Detailed and Complete Alternative Models

1. CD4020BE: Similar 14-stage binary counter IC from Texas Instruments.
2. MC14020B: Binary counter IC with similar functionality from ON Semiconductor.
3. HEF4020BP: 14-stage ripple carry binary counter IC from NXP Semiconductors.

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