BUY M74LS02P https://www.utsource.net/itm/p/1722414.html
Quad 2-Input NOR Gates
Description: Quad 2-Input NOR Gate Features: Operating voltage: 5V Low power consumption High noise immunity Outputs can drive up to 10 LS-TTL loads Inputs compatible with standard CMOS outputs Outputs source/sink 24 mA Schmitt trigger action on all inputs Outputs open collector Applications: Logic gating Signal buffering Data transmission Clock and timing circuits Address decoding Bus interface circuits (For reference only)