SN74HC21DG4

Product Overview

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

Specifications

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

Pin Configuration

The SN74HC21DG4 has a total of 14 pins. The pin configuration is as follows:

__ __ A1 |1 \__/ 14| VCC B1 |2 13| A2 B2 |3 12| B2 A2 |4 SN 11| Y2 Y1 |5 74 10| B1 GND |6 HC 9| A1 Y2 |7 8| Y2 -- --

Functional Features

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

Advantages and Disadvantages

Advantages

• Fast propagation delay allows for high-speed applications
• Low power consumption makes it suitable for battery-powered devices
• Wide operating voltage range provides flexibility in different systems
• Schmitt-trigger input ensures reliable operation in noisy environments

Disadvantages

• Limited number of inputs (4 per gate)
• Not suitable for high-current applications

Working Principles

The SN74HC21DG4 is a dual 4-input AND gate that performs logical AND operations on its inputs. It utilizes high-speed CMOS technology, which allows for fast propagation delay and low power consumption. The Schmitt-trigger input provides noise immunity, ensuring reliable operation even in the presence of electrical noise.

Detailed Application Field Plans

The SN74HC21DG4 can be used in various applications, including:

1. Digital logic circuits
2. Microcontrollers and microprocessors
3. Communication systems
4. Industrial automation
5. Automotive electronics

Detailed and Complete Alternative Models

Some alternative models to the SN74HC21DG4 include:

1. CD4082: Dual 4-input AND gate, CMOS technology
2. MC14082: Dual 4-input AND gate, TTL technology
3. 74LS21: Dual 4-input AND gate, low-power Schottky technology

These alternative models offer similar functionality but may have different specifications and package options.

In conclusion, the SN74HC21DG4 is a dual 4-input AND gate integrated circuit that offers high-speed operation, low power consumption, and wide compatibility with different logic levels. Its versatile applications make it suitable for various digital systems and electronic devices.