Quad 2-input NAND gate with a 3V to 18V supply range
CD4011BPW is a quad 2-input NAND gate in 14-TSSOP, 3V to 18V supply, 1 µA quiescent.
At 15V and 50 pF load, the max propagation delay is 90 ns. That is adequate for 1 MHz or slower clock domains, but it will limit throughput in high-speed digital sections. For faster switching, a 74LVC family gate (e.g., SN74LVC10AD) offers 4.7 ns at 3.3 V, though it cannot match the 4000B's wide supply range or military temperature grade.
Military temperature range and package fit
The 14-TSSOP footprint (0.173" body width) matches standard 4.40 mm pitch layouts; the supplier device package is 14-TSSOP.