Overview
The CD4021BPWR, manufactured by Texas Instruments, is an 8-stage static shift register IC that operates with both parallel and serial input/output configurations. This component is part of the CD4021B series and is known for its versatility in digital electronics applications. It allows for easy conversion of parallel data to serial format, making it useful in various serial data handling tasks. The IC features medium-speed operation, fully static operation, and is designed with 8 master-slave flip-flops plus output buffering and control gating.
Key Specifications
| Specification | Value |
|---|---|
| Supply Voltage Range | 3V to 18V |
| Number of Bits | 8 |
| Operating Temperature Range | -55°C to +125°C |
| Output Current | 6mA |
| Propagation Delay | 140ns |
| Package Type | DIP-16, SOIC, and other variants |
| Clock Rate | 12 MHz (typ.) at VDD - VSS = 10 V |
| Input Current | 1 µA at 18 V over full package-temperature range; 100 nA at 18 V and 25°C |
| Noise Margin | 1 V at VDD = 5 V, 2 V at VDD = 10 V, 2.5 V at VDD = 15 V |
Key Features
- Simple Parallel-to-Serial Conversion: Converts parallel input data to a serial output stream.
- Wide Supply Voltage Range: Operates from 3V to 18V, making it versatile for different voltage systems.
- Low Power Consumption: Consumes minimal power during operation.
- High-Speed Operation: Provides fast data processing with low propagation delay.
- Cascadable: Multiple CD4021BPWR ICs can be cascaded for extended data handling capabilities.
- Fully Static Operation: Ensures that the IC retains its state even when the clock is not active.
- Standardized Symmetrical Output Characteristics: Ensures consistent output behavior across different operating conditions.
- 5-V, 10-V, and 15-V Parametric Ratings: Meets all requirements of JEDEC Tentative Standard No. 13B for 'B' Series CMOS Devices.
Applications
- Parallel Input/Serial Output Data Queuing: Ideal for applications requiring the conversion of parallel data to serial format.
- Parallel-to-Serial Data Conversion: Useful in digital systems where serial data processing is necessary.
- General-Purpose Register: Can be used as a general-purpose register in various digital circuits.
- Automotive Applications: Qualified for automotive applications due to its robust specifications and reliability.
Q & A
- What is the CD4021BPWR used for?
The CD4021BPWR is used for parallel-to-serial data conversion, parallel input/serial output data queuing, and as a general-purpose register in digital systems.
- What is the supply voltage range of the CD4021BPWR?
The supply voltage range of the CD4021BPWR is from 3V to 18V.
- How many bits does the CD4021BPWR have?
The CD4021BPWR is an 8-bit static shift register.
- What is the operating temperature range of the CD4021BPWR?
The operating temperature range is -55°C to +125°C.
- Can multiple CD4021BPWR ICs be cascaded?
- What is the typical clock rate of the CD4021BPWR?
The typical clock rate is 12 MHz at VDD - VSS = 10 V.
- What is the noise margin of the CD4021BPWR?
The noise margin is 1 V at VDD = 5 V, 2 V at VDD = 10 V, and 2.5 V at VDD = 15 V.
- Is the CD4021BPWR suitable for automotive applications?
- What types of packages are available for the CD4021BPWR?
The CD4021BPWR is available in DIP-16, SOIC, and other package variants.
- How does the PARALLEL/SERIAL CONTROL input function?
The PARALLEL/SERIAL CONTROL input controls whether data is entered serially or in parallel. When low, data is serially shifted; when high, data is jammed in parallel.
