SN74HC21PWRE4

Product Overview

• Category: Integrated Circuit
• Use: Logic Gate
• Characteristics: Dual 4-input AND gate
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: High-speed CMOS logic gate
• 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 Time: 9 ns (typical)
• Maximum Quiescent Current: 1 µA

Detailed Pin Configuration

The SN74HC21PWRE4 has a total of 14 pins. The pin configuration is as follows:

1. A1: Input A1
2. B1: Input B1
3. Y1: Output Y1
4. A2: Input A2
5. B2: Input B2
6. Y2: Output Y2
7. GND: Ground
8. B3: Input B3
9. A3: Input A3
10. Y3: Output Y3
11. B4: Input B4
12. A4: Input A4
13. Y4: Output Y4
14. VCC: Power Supply

Functional Features

• Dual 4-input AND gate with independent inputs
• High-speed operation suitable for various applications
• Low power consumption
• Wide supply voltage range allows compatibility with different systems
• Schmitt-trigger input for noise immunity

Advantages and Disadvantages

Advantages: - High-speed operation enables efficient processing of logic signals - Low power consumption reduces energy usage - Wide supply voltage range provides flexibility in system design - Schmitt-trigger input ensures reliable operation in noisy environments

Disadvantages: - Limited number of inputs (4 per gate) - Not suitable for applications requiring more complex logic functions

Working Principles

The SN74HC21PWRE4 is a dual 4-input AND gate that performs logical AND operations on its inputs. It utilizes high-speed CMOS technology, allowing for fast signal processing. The gate operates by comparing the logical states of its inputs and producing an output based on the AND function. The Schmitt-trigger input ensures reliable operation even in the presence of noise.

Detailed Application Field Plans

The SN74HC21PWRE4 can be used in various applications that require logical AND operations. Some potential application fields include:

1. Digital circuit design: The gate can be used to implement logical functions in digital circuits such as microcontrollers, FPGA (Field-Programmable Gate Array), and ASIC (Application-Specific Integrated Circuit) designs.
2. Communication systems: The gate can be utilized in communication systems for signal processing, error detection, and data filtering.
3. Industrial automation: The gate can be integrated into control systems for logical decision-making and signal conditioning.
4. Automotive electronics: The gate can be employed in automotive electronics for functions like sensor interfacing, signal validation, and control logic implementation.

Detailed and Complete Alternative Models

1. SN74HC08PWRE4: Quad 2-input AND gate
2. SN74HC32PWRE4: Quad 2-input OR gate
3. SN74HC86PWRE4: Quad 2-input XOR gate
4. SN74HC00PWRE4: Quad 2-input NAND gate
5. SN74HC02PWRE4: Quad 2-input NOR gate

These alternative models provide similar functionality to the SN74HC21PWRE4 but with different input configurations or logical operations.

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