CD4021BNSRG4

Product Overview

• Category: Integrated Circuit
• Use: Shift Register
• Characteristics: Serial to Parallel Conversion, 8-Bit Data Storage, Cascadable
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: The CD4021BNSRG4 is a CMOS 8-stage static shift register that converts serial input data into parallel output format. It is commonly used in digital electronics for various applications.
• Packaging/Quantity: Available in reels of 2500 units.

Specifications

• Supply Voltage: 3V to 18V
• Operating Temperature Range: -55°C to +125°C
• Input Voltage: 0V to VDD
• Output Voltage: 0V to VDD
• Maximum Clock Frequency: 5MHz
• Number of Stages: 8
• Pin Count: 16

Detailed Pin Configuration

The CD4021BNSRG4 has a total of 16 pins, each serving a specific purpose:

1. Pin 1: Serial Data Input (DS)
2. Pin 2: Clock Input (CP)
3. Pin 3: Clock Enable Input (CE)
4. Pin 4: Parallel Data Output Qh'
5. Pin 5: Parallel Data Output Qg'
6. Pin 6: Parallel Data Output Qf'
7. Pin 7: Parallel Data Output Qe'
8. Pin 8: Parallel Data Output Qd'
9. Pin 9: Parallel Data Output Qc'
10. Pin 10: Parallel Data Output Qb'
11. Pin 11: Parallel Data Output Qa'
12. Pin 12: Ground (GND)
13. Pin 13: Serial Data Output (QH)
14. Pin 14: Clock Inhibit (CI)
15. Pin 15: VDD
16. Pin 16: Reset (MR)

Functional Features

• Serial-to-parallel conversion of input data.
• 8-bit data storage capability.
• Cascadable for expanding the number of stages.
• Low power consumption due to CMOS technology.
• Wide operating voltage range.

Advantages and Disadvantages

Advantages

• Simple and straightforward interface.
• Easy integration into digital circuits.
• Low power consumption.
• Compact package size.
• Wide operating temperature range.

Disadvantages

• Limited clock frequency compared to some other shift registers.
• Not suitable for high-speed applications.

Working Principles

The CD4021BNSRG4 operates by shifting the serial input data into its internal register on each clock pulse. The clock enable input allows control over the shifting process, while the clock inhibit input can pause the shifting operation. The parallel outputs store the shifted data, which can be accessed simultaneously.

Detailed Application Field Plans

The CD4021BNSRG4 finds applications in various fields, including:

1. Industrial automation systems for data acquisition and control.
2. Digital communication systems for signal processing.
3. Consumer electronics for remote control devices.
4. Automotive electronics for instrument clusters and control panels.
5. Robotics for sensor interfacing and control.

Detailed and Complete Alternative Models

1. SN74HC165N: 8-Bit Parallel-In/Serial-Out Shift Register
2. CD4094BE: 8-Stage Shift-and-Store Bus Register
3. 74HC595: 8-Bit Serial-In/Serial or Parallel-Out Shift Register

These alternative models offer similar functionality and can be used as replacements for the CD4021BNSRG4 in various applications.

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