CD74HCT21MG4

Product Overview

Category: Integrated Circuit
Use: Logic Gates
Characteristics: High-speed, CMOS technology
Package: SOIC (Small Outline Integrated Circuit)
Essence: Dual 4-input AND gate
Packaging/Quantity: Tape and Reel, 2500 units 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)

Detailed Pin Configuration

The CD74HCT21MG4 has a total of 14 pins. The pin configuration is as follows:

A1 (Input A1)
B1 (Input B1)
C1 (Input C1)
D1 (Input D1)
Y1 (Output Y1)
GND (Ground)
Y2 (Output Y2)
D2 (Input D2)
C2 (Input C2)
B2 (Input B2)
A2 (Input A2)
VCC (Supply Voltage)
NC (No Connection)
NC (No Connection)

Functional Features

Dual 4-input AND gate functionality
High-speed operation
Compatible with TTL input levels
Low power consumption
Schmitt-trigger inputs for noise immunity

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient processing - Low power consumption reduces energy usage - Schmitt-trigger inputs provide noise immunity, ensuring reliable performance

Disadvantages: - Limited number of inputs (4 per gate) - Restricted operating temperature range (-40°C to +85°C)

Working Principles

The CD74HCT21MG4 is a CMOS integrated circuit that functions as a dual 4-input AND gate. It operates by receiving input signals from the A1, B1, C1, and D1 pins, and produces corresponding output signals at the Y1 and Y2 pins. The gate utilizes CMOS technology, which allows for high-speed operation and low power consumption.

Detailed Application Field Plans

The CD74HCT21MG4 can be used in various applications that require logical operations. Some potential application fields include:

Digital electronics
Microcontrollers
Data processing systems
Communication devices
Industrial automation

Detailed and Complete Alternative Models

SN74HCT21: Similar functionality, different package (DIP)
MC74HCT21: Similar functionality, different manufacturer (Motorola)
74HC21: Similar functionality, different technology (TTL)

Note: These alternative models may have slight variations in specifications and pin configuration.

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技術ソリューションにおける CD74HCT21MG4 の適用に関連する 10 件の一般的な質問と回答をリストします。

Sure! Here are 10 common questions and answers related to the application of CD74HCT21MG4 in technical solutions:

Q: What is CD74HCT21MG4? A: CD74HCT21MG4 is a high-speed CMOS logic gate, specifically a dual 4-input AND gate, which can be used in various digital circuit applications.
Q: What is the operating voltage range for CD74HCT21MG4? A: The operating voltage range for CD74HCT21MG4 is typically between 2V and 6V.
Q: What is the maximum output current that CD74HCT21MG4 can drive? A: CD74HCT21MG4 can typically drive up to 4mA of output current.
Q: Can CD74HCT21MG4 be used in both TTL and CMOS logic systems? A: Yes, CD74HCT21MG4 is compatible with both TTL and CMOS logic systems, making it versatile for different applications.
Q: What is the propagation delay of CD74HCT21MG4? A: The propagation delay of CD74HCT21MG4 is typically around 11ns.
Q: Can CD74HCT21MG4 be used in high-frequency applications? A: CD74HCT21MG4 is not specifically designed for high-frequency applications, but it can still be used in moderate-speed digital circuits.
Q: Is CD74HCT21MG4 sensitive to noise or voltage spikes? A: CD74HCT21MG4 has built-in noise immunity and is designed to tolerate voltage spikes within its specified operating range.
Q: Can CD74HCT21MG4 be used in battery-powered devices? A: Yes, CD74HCT21MG4 can be used in battery-powered devices as it operates within a wide voltage range and has low power consumption.
Q: Can CD74HCT21MG4 be cascaded to create larger logic functions? A: Yes, multiple CD74HCT21MG4 gates can be cascaded together to create larger logic functions, such as 8-input AND gates or more complex combinations.
Q: Are there any specific precautions to consider when using CD74HCT21MG4? A: It is important to ensure that the power supply voltage remains within the specified range and to avoid exceeding the maximum input and output current ratings to prevent damage to the device.