The TL7726CP is a hex clamping circuit from Texas Instruments. It features six identical clamping circuits with 25 mA current sink and operates from 0°C to 70°C.
The SP721APP is a mixed technology TVS diode array from Littelfuse, designed for ESD and over-voltage protection. It features 6 input circuits, 30V clamping voltage, low 3pF capacitance, and fast 2ns rise time.