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BUY 74HC02D https://www.utsource.net/itm/p/1733964.html
Quad 2-input NOR gate
Description: Quad 2-Input NOR Gate Features: - Low power consumption - High noise immunity - High speed operation - Outputs can be connected directly to CMOS, NMOS and TTL - Inputs are TTL compatible - Outputs source/sink 24mA Applications: - Logic gating - Boolean logic operations - Signal routing - Data buffering - Data transmission (For reference only)