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Dual 4-input AND Gate IC - 74HC21
Dual 4-input AND Gate IC - 74HC21
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- Number of gate or circuit: 2
- Number of inputs: 4
- Pin counts: 14
- Pin type: through hole
- Package: PDIP-14
- It is commonly used in digital circuits to combine multiple input signals and produce an output signal that is dependent on the input states.
Dual 4-input AND Gate IC - 74HC21
The 74HC Series 74HC21 contains two independent 4-input AND gates. The 74HC21 is characterized for operation from 0 °C to 70 °C. The 74HC21 features is a package Options include Plastic "small outline" packages, ceramic chips carriers and flat packages and plastic and ceramic DIPs.
Pinout:

Package Includes:
- 1 x IC - 74HC21
Specifications:
Supply Voltage (VCC) | 7 V |
Input Voltage (VI) | 7 V |
Operating free-air temperature range | 0°C to +70°C |
Storage temperature range | –65°C to +150°C |
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1.What is 74HC21?
- The 74HC21 is a 4-input dual AND gate. Clamp diodes are used as inputs. This allows for the use of current-limiting resistors to interface inputs to voltages greater than V CC.
2.Can the 74HC21 IC be used in conjunction with other digital circuits?
- Yes, the 74HC21 IC can be combined with other digital circuits such as microcontrollers, memory devices, and logic ICs to create a flexible and expandable system design.
It enhances my logic operations in electronic circuits. It is high-speed and cost-effective component.