From old datasheet system quad 2-input NOR Buffered B Series Gate • quad 2-input NOR Buffered B Series Gate . quad 2-input NAND Buffered B Series Gate 4000/14000/40000 SERIES, quad 2-input NOR GATE, PDSO14 16-Bit Bus Transceiver And Register With 3-State Outputs 56-TSSOP -40 to 85 4000/14000/40000 SERIES, quad 2-input NAND GATE, PDSO14