HEF4021BP
Shift Register CountersHEF4021BP
Shift Register Counters
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Shipping & Payment
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Service & Packaging
Service & Packaging
About After Sales Service
All Parts Extended Quality Guarantee
Initiate the application within 90 days from the shipment date.
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About packaging
Regarding packaging, our products are carefully packed in anti-static bags to provide ESD anti-static protection. The outer packaging is durable with secure closure. We support various packaging methods such as Tape and Reel, Cut Tape, Tube, or Tray.
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HEF4021BP DataSheet
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Current price plan is under preparation. Please contact our customer service team for the latest pricing information. Thank you for your understanding and support!
Details
The HEF4021B is an 8-bit static shift register (parallel-to-serial converter) with a synchronous serial data input (DS), a clock input (CP), an asynchronous active HIGH parallel load input (PL), eight asynchronous parallel data inputs (P0 to P7) and buffered parallel outputs from the last three stages (05 to O7). Each register stage is a D-type master-slave flip-flop with a set direct/clear direct input. Information on P0 to P7 is asynchronously loaded into the register while PL is HIGH, independent of CP and DS. When PL is LOW, data on DS is shifted into the first register position and all the data in the register is shifted one position to the right on the LOW to HIGH transition of CP. Schmitt-trigger action in the clock input makes the circuit highly tolerant to slower clock rise and fall times.
Key Features
- Tolerant of slower rise and fall times
- Fully static operation
- 5 V, 10 V, and 15 V parametric ratings
- Standardized symmetrical output characteristics
- Operates across the automotive temperature range −40 °C to +125 °C
- Complies with JEDEC standard JESD 13-B
- ESD protection:
- HBM JESD22-A114E exceeds 2000 V
- MM JESD22-A115-A exceeds 200 V
Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
Manufacturer | PHILIPS | Product Category ! | Shift Registers |
Datasheet PDF
Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.
FAQs
What is HEF4021BP?
The HEF4021BP is an 8-stage static shift register IC (integrated circuit) manufactured by NXP Semiconductors. It is commonly used for parallel-to-serial data conversion, serial data storage, and data serialization in various digital electronics applications.
How Does HEF4021BP Work?
The HEF4021BP operates by storing data in a parallel input format and shifting it out in a serial output format. It can be clocked to sequentially shift the stored data out in a controlled manner, making it suitable for applications requiring data serialization and storage.
How Many Pins does HEF4021BP have and What are the Functions of the Pinout Configuration?
The HEF4021BP is housed in a 16-pin DIP (Dual Inline Package) or SOIC (Small Outline Integrated Circuit) package. The pinout configuration includes:
- Q0 - Q7: Parallel output pins for the eight stages of the shift register.
- DS: Serial data input pin to load data into the register.
- SH_CP: Shift register clock input for shifting data out serially.
- ST_CP: Storage register clock input for latching parallel data into the register.
- MR: Master reset input for clearing the register.
What are the Pros and Cons of HEF4021BP?
Pros:
- Simple Interface: Easy to use in digital circuit designs for parallel-to-serial conversion.
- Versatile: Can be used for serial data storage, shift register applications, and more.
- Cost-Effective: Provides a cost-effective solution for data serialization and storage compared to complex microcontrollers.
- Industry Standard: Widely used and well-documented, making it easy to find resources for implementation.
Cons:
- Limited Features: May not have advanced features found in more complex microcontrollers or serial interface ICs.
- Lower Speed: May not be suitable for high-speed serial data transmission compared to specialized serial interface ICs.
Are There Any Equivalents/Alternatives to HEF4021BP for Recommendation?
- The CD4021B from Texas Instruments is a similar 8-stage static shift register IC.
- Alternatives include the 74HC595 from NXP Semiconductors and the SN74HC165 from Texas Instruments, which offer similar shift register functionalities.
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