Description: The HCF4015BE is a dual 4-input NAND Schmitt trigger IC from STMicroelectronics.

Features:

• Low power consumption
• High noise immunity
• High input impedance
• Low output saturation voltage
• High speed operation
• High input sensitivity

Applications:

• Pulse and logic circuits
• Signal conditioning
• Timing circuits
• Interface circuits
• Waveform generators
• Control circuits(For reference only) https://www.utsource.net/itm/p/30397.html