4000 series cmos logic family texas instruments cd40106be this st cd40106b hex schmitt trigger ic is available in a dil 14 package a part of the cmos 4000 range each circuit functions as an inverter with schmitt trigger action on the input the trigger switches at different points for positive and negative going signals the difference between the positive going voltage vp and the negative going voltage vn is defined as hysteresis voltage vh texas instruments cd40106be hex schmitt t