Description of 4093 NAND Gate The CD4093B consists of four Schmitt-trigger circuits. Each circuit functions as a 2-input NAND gate with Schmitttrigger action on both inputs. The gate switches at different points for positive and negative-going signals. The difference between the positive (VT ) and the negative voltage (VT-) is defined as hysteresis voltage (VH). All outputs have equal source and sink currents and conform to standard B-series output drive (see Static Electrical Characteristics). Features Wide supply voltage range: 3.0V to 15V Schmitt-trigger on each input with no external components Noise immunity greater than 50% Equal source and sink currents No limit on input rise and fall time Standard B-series output drive Hysteresis voltage (any input) TA = 25°C Applications Wave and pulse shapers High-noise-environment systems Monostable multivibrators Astable multivibrators NAND logic
