HEF4021BTT-Q100J

Overview

Category: Integrated Circuit (IC)

Use: Shift Register

Characteristics: - High-speed operation - Low power consumption - Wide operating voltage range - Serial-to-parallel data conversion - Cascadable for larger shift registers

Package: TSSOP-16

Essence: The HEF4021BTT-Q100J is a 8-bit static shift register IC that allows serial-to-parallel data conversion. It is commonly used in applications where multiple inputs need to be sampled and stored simultaneously.

Packaging/Quantity: The HEF4021BTT-Q100J is typically sold in reels of 2500 units.

Specifications

• Supply Voltage Range: 3V to 15V
• Input Voltage Range: -0.5V to VDD + 0.5V
• Output Voltage Range: -0.5V to VDD + 0.5V
• Operating Temperature Range: -40°C to +125°C
• Maximum Clock Frequency: 25 MHz
• Maximum Propagation Delay: 30 ns

Pin Configuration

The HEF4021BTT-Q100J has a total of 16 pins, which are assigned as follows:

1. Q7 (Output)
2. Q6 (Output)
3. Q5 (Output)
4. Q4 (Output)
5. Q3 (Output)
6. Q2 (Output)
7. Q1 (Output)
8. Q0 (Output)
9. GND (Ground)
10. SER (Serial Data Input)
11. CLK (Clock Input)
12. MR (Master Reset Input)
13. OE (Output Enable Input)
14. CP (Cascade Input)
15. VDD (Supply Voltage)
16. Q7' (Output)

Functional Features

• Serial-to-parallel data conversion: The HEF4021BTT-Q100J can convert serial data input into parallel outputs, allowing for efficient data storage and retrieval.
• Cascadable for larger shift registers: Multiple HEF4021BTT-Q100J ICs can be cascaded together to create larger shift registers with more input channels.
• High-speed operation: The IC operates at a maximum clock frequency of 25 MHz, enabling fast data processing.
• Low power consumption: The HEF4021BTT-Q100J is designed to minimize power consumption, making it suitable for battery-powered applications.

Advantages and Disadvantages

Advantages: - High-speed operation allows for quick data processing. - Low power consumption extends battery life in portable devices. - Wide operating voltage range provides flexibility in different applications. - Cascadable design enables the creation of larger shift registers.

Disadvantages: - Limited number of output channels (8 bits). - Requires external components for proper operation (clock signal, reset signal, etc.). - Not suitable for applications requiring real-time data processing.

Working Principles

The HEF4021BTT-Q100J operates based on the principle of sequential logic. It uses a clock signal to synchronize the shifting of data through its internal registers. When a clock pulse is received, the serial data input (SER) is shifted into the first register, while the existing data is shifted to the next register. This process continues until all the data is stored in the parallel output registers. The master reset (MR) input allows for clearing the registers, and the output enable (OE) input controls the activation of the output pins.

Detailed Application Field Plans

The HEF4021BTT-Q100J is commonly used in various applications, including:

1. Data acquisition systems: The IC is used to sample and store multiple input signals simultaneously, allowing for accurate data acquisition.
2. Industrial automation: It can be employed in control systems to monitor and process multiple sensor inputs.
3. LED matrix displays: The IC is used to control the row or column selection of LEDs in a matrix display, enabling dynamic patterns and animations.
4. Communication systems: It can be utilized in serial-to-parallel data conversion for efficient data transmission and reception.

Detailed and Complete Alternative Models

1. CD4021B: Similar 8-bit static shift register IC with comparable specifications and pin configuration.
2. SN74HC595: 8-bit serial-in, parallel-out shift register IC with additional output latches for improved functionality.
3. 74HC164: 8-bit serial-in, parallel-out shift register IC with a simpler pin configuration and lower power consumption.

These alternative models offer similar functionality and can be considered as substitutes for the HEF4021BTT-Q100J based on specific application requirements.

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