Each circuit of the HEF40106B functions as an inverter with Schmitt-trigger action. The Schmitt-trigger switches at different points for the positive and negative-going input signals. The difference between the positive-going voltage (VP) and the negative-going voltage (VN) is defined as hysteresis voltage (VH).
Philips Semiconductors was acquired by NXP Semiconductors.
NXP Semiconductors, formerly Philips Semiconductors, has fifty years of innovation and a rich IP portfolio that firmly establishes NXP as Europe's second largest semiconductor company.