BUY HD74LS02P https://www.utsource.net/itm/p/962754.html
Quad 2-input NOR Gate
Description: Quadruple 2-Input Positive NOR Gates
Features:
Low power TTL compatible
High noise immunity
High speed operation
Outputs source/sink 24mA
Fanout of 2 LSTTL loads
Fully static operation
Standardized symmetrical output characteristics
Inputs compatible with TTL levels
Outputs compatible with TTL levels
Applications:
Logic gating
Pulse generation
Data transmission
Data storage
Data conversion
Data selection
Data processing
Timing circuits
(For reference only)