4000 series cmos logic family texas instruments cd4093be this texas instruments cd4093b quad 2 input nand schmidt trigger gate ic is available in a dil 14 package a part of the cmos 4000 range the 4093 consists of 4 schmitt trigger circuits each one functions as a 2 input nand gate with schmitt trigger action on both inputs texas instruments cd4093be quad 2 input nand schmitt trigger