CD4021BM

Product Overview

Category

CD4021BM belongs to the category of integrated circuits (ICs).

Use

It is commonly used as an 8-stage static shift register.

Characteristics

• CD4021BM is a CMOS-based IC.
• It operates at a wide voltage range, typically between 3V and 18V.
• The IC has a high noise immunity and low power consumption.
• It offers a high-speed data transfer rate.

Package

CD4021BM is available in a 16-pin DIP (Dual Inline Package) format.

Essence

The essence of CD4021BM lies in its ability to store and shift digital data.

Packaging/Quantity

CD4021BM is usually packaged in reels or tubes, with quantities varying based on customer requirements.

Specifications

• Supply Voltage: 3V - 18V
• Input Voltage: 0V - VDD
• Output Voltage: 0V - VDD
• Operating Temperature Range: -55°C to +125°C
• Maximum Clock Frequency: 5 MHz

Detailed Pin Configuration

1. Serial Data Input (DS)
2. Clock Input (CP)
3. Parallel Data Output (QH')
4. Serial Data Output (QH)
5. Enable Input (OE)
6. Ground (GND)
7. Parallel Data Input (D0)
8. Parallel Data Input (D1)
9. Parallel Data Input (D2)
10. Parallel Data Input (D3)
11. Parallel Data Input (D4)
12. Parallel Data Input (D5)
13. Parallel Data Input (D6)
14. Parallel Data Input (D7)
15. Supply Voltage (VDD)
16. No Connection (NC)

Functional Features

• CD4021BM can be cascaded to increase the number of stages.
• It has an asynchronous reset feature.
• The IC supports both parallel and serial data transfer modes.
• CD4021BM offers a wide operating voltage range, making it suitable for various applications.

Advantages and Disadvantages

Advantages

• High noise immunity due to CMOS technology.
• Low power consumption.
• Wide operating voltage range.
• Supports both parallel and serial data transfer modes.

Disadvantages

• Limited clock frequency compared to some other shift registers.
• Not suitable for high-speed applications.

Working Principles

CD4021BM operates as an 8-stage static shift register. It stores and shifts digital data using clock pulses. The input data is transferred to the output in a serial manner, with each clock pulse shifting the data by one stage. The parallel data inputs allow for simultaneous loading of data into all stages.

Detailed Application Field Plans

CD4021BM finds applications in various fields, including:

1. Industrial automation: Used for data storage and transfer in control systems.
2. Communication systems: Employed in serial-to-parallel or parallel-to-serial data conversion.
3. Consumer electronics: Integrated into devices requiring data storage and manipulation.
4. Automotive industry: Utilized in vehicle control units for data processing and transmission.

Detailed and Complete Alternative Models

Some alternative models to CD4021BM include:

1. SN74HC165N
2. CD4015BE
3. 74HC595

These models offer similar functionality and can be used as alternatives based on specific requirements.

In conclusion, CD4021BM is a CMOS-based integrated circuit that serves as an 8-stage static shift register. It offers advantages such as high noise immunity, low power consumption, and a wide operating voltage range. However, it has limitations in terms of clock frequency and may not be suitable for high-speed applications. CD4021BM finds applications in industrial automation, communication systems, consumer electronics, and the automotive industry. Alternative models like SN74HC165N, CD4015BE, and 74HC595 can be considered based on specific needs.