Supply original CD4093BNSR, Logic - Gates and Inverters, by Texas Instruments

The CD4093B consists of four Schmitt-trigger circuits. Each circuit functions as a 2-input NAND gate with Schmitt trigger 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 Typical VDD = 5.0V VH = 1.5V VDD = 10V VH = 2.2V VDD = 15V VH = 2.7V Guaranteed VH = 0.1 VDD Applications
• Wave and pulse shapers
• High-noise-environment systems
• Monostable multivibrators
• Astable multivibrators
• NAND logic