Logic device/transceiver/encoder

The MC74VHC1G02 is an advanced high-speed CMOS 2-input NOR gate fabricated on a silicon gate CMOS process. The internal circuitry consists of multiple stages including a buffered output that provides high noise immunity and stable output. The MC74VHC1G02 input structure provides protection at applied voltages up to 5.5 V regardless of the supply voltage. So MC74VHC1G02 is used to interface 5 V circuit to 3 V circuit.

3-Channel, 3-Input, 4.5V to 5.5V OR Gate 14-PDIP -55 to 125 with TTL Compatible CMOS Inputs

4-Channel, 2-Input, 4.5V to 5.5V Bipolar NOR Gate 14-SO 0 to 70

4-Channel, 2-Input, 2V to 5.5V NOR Gate 14-SO -40 to 125