SN74HC21PWT

Product Overview

• Category: Integrated Circuit
• Use: Logic Gate
• Characteristics: Dual 4-input AND gate
• Package: TSSOP-14
• Essence: High-speed CMOS technology
• Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

• Supply Voltage Range: 2V to 6V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay: 9 ns (typical)
• Quiescent Current: 1 µA (maximum)

Detailed Pin Configuration

The SN74HC21PWT has a total of 14 pins arranged as follows:

__ __ 1 |1 \__/ 14| VCC 2 |2 13| A1 3 |3 12| B1 4 |4 11| Y1 5 |5 10| A2 6 |6 9| B2 7 |7 8| Y2 ‾‾‾‾‾‾‾‾‾‾

Functional Features

• Dual 4-input AND gate with independent inputs
• High-speed operation due to CMOS technology
• Low power consumption
• Wide supply voltage range for versatility
• Compatible with TTL logic levels

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient data processing - Low power consumption reduces energy usage - Versatile supply voltage range enables compatibility with various systems - Independent inputs provide flexibility in circuit design

Disadvantages: - Limited to AND gate functionality, limiting its application in certain logic operations - TSSOP package may require specialized equipment for soldering and handling

Working Principles

The SN74HC21PWT is a dual 4-input AND gate that performs logical AND operations on four independent inputs. It utilizes high-speed CMOS technology, allowing for fast data processing. The gate operates within a wide supply voltage range of 2V to 6V, making it suitable for various applications. When all input signals are high (logic level 1), the output signal becomes high as well. Otherwise, the output remains low (logic level 0).

Detailed Application Field Plans

The SN74HC21PWT can be used in various digital systems and electronic devices that require logical AND operations. Some potential application fields include:

1. Microcontrollers: Used in conjunction with other logic gates to implement complex decision-making circuits.
2. Data Processing Units: Employed to perform bitwise operations and data filtering.
3. Communication Systems: Utilized for signal conditioning and protocol implementation.
4. Industrial Automation: Integrated into control systems for logical signal processing.

Detailed and Complete Alternative Models

1. SN74HC08PWT: Quad 2-input AND gate with similar characteristics and package.
2. SN74LS21N: Dual 4-input AND gate with TTL logic levels and DIP-14 package.
3. CD4082BE: Dual 4-input AND gate with CMOS technology and DIP-14 package.

These alternative models offer similar functionality and can be considered as substitutes for the SN74HC21PWT based on specific requirements and availability.

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