CD4021BE
Basic Information Overview
- Category: Integrated Circuit (IC)
- Use: Shift Register
- Characteristics: Serial to Parallel Conversion, 8-Bit Data Storage
- Package: DIP (Dual In-line Package)
- Essence: Digital Logic IC
- Packaging/Quantity: Tube/25 pieces
Specifications
- Supply Voltage: 3V to 18V
- Input Voltage: 0V to VDD
- Output Voltage: 0V to VDD
- Operating Temperature Range: -55°C to +125°C
- Maximum Clock Frequency: 5 MHz
- Maximum Power Dissipation: 500 mW
Detailed Pin Configuration
The CD4021BE IC has a total of 16 pins. The pin configuration is as follows:
| Pin No. | Name | Description | |---------|------|-------------| | 1 | Q7 | Output Bit 7 | | 2 | Q6 | Output Bit 6 | | 3 | Q5 | Output Bit 5 | | 4 | Q4 | Output Bit 4 | | 5 | Q3 | Output Bit 3 | | 6 | Q2 | Output Bit 2 | | 7 | Q1 | Output Bit 1 | | 8 | Q0 | Output Bit 0 | | 9 | GND | Ground | | 10 | SER | Serial Data Input | | 11 | CLK | Clock Input | | 12 | MR | Master Reset Input | | 13 | VDD | Positive Power Supply | | 14 | Q7' | Complementary Output Bit 7 | | 15 | Q6' | Complementary Output Bit 6 | | 16 | Q5' | Complementary Output Bit 5 |
Functional Features
- Serial to parallel conversion of data
- 8-bit data storage
- Cascadable for larger shift registers
- Master reset functionality
- Complementary outputs for each bit
Advantages and Disadvantages
Advantages
- Simple and easy to use
- Low power consumption
- Wide operating voltage range
- Can be cascaded for larger applications
Disadvantages
- Limited clock frequency (up to 5 MHz)
- Not suitable for high-speed applications
- Limited number of output bits (8 bits)
Working Principles
The CD4021BE is a shift register IC that converts serial input data into parallel output. It consists of eight D-type flip-flops connected in series, allowing the storage of 8 bits of data. The shift register can be clocked using an external clock signal, and the data is shifted through the flip-flops one by one. The parallel output is available at the Q0-Q7 pins. The MR pin allows for a master reset, clearing all the stored data.
Detailed Application Field Plans
The CD4021BE IC finds applications in various fields, including: 1. Digital electronics 2. Communication systems 3. Industrial automation 4. Robotics 5. Data acquisition systems
Detailed and Complete Alternative Models
Some alternative models to CD4021BE are: 1. SN74HC165N 2. CD74HC4094E 3. 74HC595
These alternatives offer similar functionality and can be used as replacements depending on specific requirements.
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技術ソリューションにおける CD4021BE の適用に関連する 10 件の一般的な質問と回答をリストします。
Sure! Here are 10 common questions and answers related to the application of CD4021BE in technical solutions:
Q1: What is CD4021BE? A1: CD4021BE is a CMOS 8-stage static shift register commonly used in digital electronics applications.
Q2: What is the purpose of CD4021BE? A2: CD4021BE is used to expand the number of input/output pins of microcontrollers or other digital devices.
Q3: How many input/output pins does CD4021BE have? A3: CD4021BE has 8 input/output pins.
Q4: How does CD4021BE work? A4: CD4021BE works by shifting data from its input pin to the output pins, allowing for parallel-to-serial or serial-to-parallel conversion.
Q5: What voltage levels does CD4021BE support? A5: CD4021BE supports a wide range of voltage levels, typically between 3V and 15V.
Q6: Can CD4021BE be cascaded to increase the number of input/output pins? A6: Yes, CD4021BE can be cascaded to increase the number of input/output pins by connecting the output of one CD4021BE to the input of another.
Q7: What is the maximum clock frequency supported by CD4021BE? A7: CD4021BE can operate at clock frequencies up to 5 MHz.
Q8: Is CD4021BE compatible with Arduino or Raspberry Pi? A8: Yes, CD4021BE is compatible with both Arduino and Raspberry Pi. It can be easily interfaced using digital I/O pins.
Q9: Can CD4021BE be used for reading multiple buttons or switches? A9: Yes, CD4021BE is commonly used for reading multiple buttons or switches as it provides additional input pins.
Q10: Are there any limitations to using CD4021BE? A10: One limitation of CD4021BE is that it does not have built-in debouncing, so external circuitry may be required for reliable button or switch inputs.
Please note that these answers are general and may vary depending on specific use cases and requirements.