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