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Triple 3-input NOR Gate IC - 74HC27

Triple 3-input NOR Gate IC - 74HC27-Robocraze

Triple 3-input NOR Gate IC - 74HC27

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  • 3 independent 3-input NOR gates
  • Outputs directly interface to CMOS, NMOS, and TTL
  • Large operating voltage range
  • Wide operating conditions

Triple 3-input NOR Gate IC - 74HC27

The 74HC Series 74HC27 is a triple 3-input positive-NOR Gate that contains three independent circuits 3-input AND gates. The 74HC27 is characterized for operation from 0 °C  to 70 °C. The 74HC27 features are package Options including Plastic "small outline" packages, ceramic chips carriers and flat packages, and plastic and ceramic DIPs. The gates operate using standard CMOS logic levels and have high noise immunity and low power consumption.


Pinout of 74HC27 IC

Package Includes:

  • 1 x IC - 74HC27


Supply Voltage 4.75 - 5.25 V
High-Level Input Voltage 2 V
Low-Level Input Voltage 0.8 V 
High-Level Output Voltage -0.4 mA
Low-Level Output Voltage 8 mA
Operating Free Air Temperature 0 - 70 °C 


1.What is the advantage of having three independent NOR gates in a single IC package?

  • The 74HC147 are high speed silicon-gate CMOS devices and are pin-compatible with low power Schottky TTL (LSTTL) (LSTTL). The 74HC147 9-input priority encoders collect data from nine active LOW inputs (l1 to l9) and provide binary representation on the four active LOW inputs (Y0 to Y3).

2.What is 74hc27 Triple 3-input IC?

  • The 74HC27 is a triple 3-input NOR gate integrated circuit with three separate NOR gates and one output pin. The gates operate on normal CMOS logic levels, have great noise immunity, and consume little power.