It's a 74HC02 quad 2 input NOR gate in DIP-14 package. This 2 input NOR gate generally use in combinational circuit such as multipliers, multiplexer, half and full adder, ripple carry adder, it's also use in sequential circuit in register.
|Operating Voltage Range||2.0 to 6.0 V|
|DC Input Current, per Pin||±20 mA|
|DC Output Current, per Pin||±25 mA|
|Temperature Range||– 65°C to + 150° C|