Overview
The HEF4021BTTJ is an 8-bit static shift register produced by Nexperia USA Inc. This integrated circuit functions as a parallel-to-serial converter, making it a versatile component in various digital circuits. It features a synchronous serial data input (DS), a clock input (CP), an asynchronous active HIGH parallel load input (PL), and eight asynchronous parallel data inputs (D0 to D7). The device also includes buffered parallel outputs from the last three stages (Q5 to Q7). Each register stage is a D-type master-slave flip-flop with set direct (SD) and clear direct (CD) inputs, enhancing its functionality and flexibility in circuit design.
Key Specifications
| Parameter | Value |
|---|---|
| Type Number | HEF4021BTTJ |
| Supply Voltage (VCC) | 3.0 V to 15.0 V |
| Logic Switching Levels | CMOS |
| Output Drive Capability | ± 2.4 mA |
| Propagation Delay (tpd) | 40 ns |
| Maximum Clock Frequency (fmax) | 40 MHz |
| Number of Bits | 8 |
| Operating Temperature (Tamb) | -40°C to 125°C |
| Package Type | 16-TSSOP (SOT403-1) |
| Mounting Type | Surface Mount |
| Logic Type | Shift Register |
| Function | Parallel or Serial to Serial |
Key Features
- Wide Supply Voltage Range: Operates from 3.0 V to 15.0 V, making it versatile for various applications.
- CMOS Low Power Dissipation: Ensures low power consumption, which is beneficial for energy-efficient designs.
- High Noise Immunity: Provides robust performance in noisy environments.
- Tolerant of Slower Rise and Fall Times: Schmitt trigger action on the clock input enhances reliability with slower signal transitions.
- Parallel and Serial Data Handling: Supports both parallel and serial data input and output, offering flexibility in circuit design.
Applications
The HEF4021BTTJ finds applications across various industries, including:
- Automotive: Used in automotive systems for data processing and transmission.
- Industrial: Employed in industrial control systems and automation.
- Consumer Electronics: Utilized in consumer devices such as audio equipment, displays, and other digital appliances.
- Mobile and Wearables: Suitable for mobile devices and wearable technology due to its low power consumption and compact package.
- Computing and Power Systems: Used in computing hardware and power management systems for efficient data handling.
Q & A
- What is the primary function of the HEF4021BTTJ?
The HEF4021BTTJ is an 8-bit static shift register that functions as a parallel-to-serial converter.
- What is the supply voltage range for the HEF4021BTTJ?
The supply voltage range is from 3.0 V to 15.0 V.
- What type of logic does the HEF4021BTTJ use?
The HEF4021BTTJ uses CMOS logic.
- What is the maximum clock frequency for the HEF4021BTTJ?
The maximum clock frequency is 40 MHz.
- What is the operating temperature range for the HEF4021BTTJ?
The operating temperature range is from -40°C to 125°C.
- What type of package does the HEF4021BTTJ come in?
The HEF4021BTTJ comes in a 16-TSSOP (SOT403-1) package.
- Is the HEF4021BTTJ RoHS compliant?
Yes, the HEF4021BTTJ is lead-free and RoHS compliant.
- What are the key benefits of using the HEF4021BTTJ?
The key benefits include low power dissipation, high noise immunity, and tolerance of slower rise and fall times.
- Where can I find detailed specifications and datasheets for the HEF4021BTTJ?
Detailed specifications and datasheets can be found on Nexperia's official website and through authorized distributors like Digi-Key and Component-World.
- What are some common applications for the HEF4021BTTJ?
Common applications include automotive, industrial, consumer electronics, mobile and wearables, and computing and power systems.
