HCC40xxx, HCC45xxx Datasheet Rad-hard, high voltag.
STMicroelectronics
HCC4001B - Rad-hard quad 2-input NOR gate
HCC40xxx, HCC45xxx Datasheet Rad-hard, high voltage, CMOS logic series Flat-14 Flat-16 DIL-14 DIL-16 Flat-24 DIL-24 The upper metallic lid is not.