CD4001 - Quad 2-Input NOR Buffered B Series Gate, 14-DIP, Texas Instruments
These quad gates are monolithic complementary MOS(CMOS) integrated circuits constructed with N- and P-channel enhancement mode transistors. They have equal source and sink current capabilities and conform to standard B series output drive. The devices also have buffered outputs which improve transfer characteristics by providing very high gain. All inputs are protected against static discharge with diodes to VDD and VSS.