SN74LV6T17/SN74LV6T17-Q1 Hex Buffers Texas Instruments SN74LV6T17/SN74LV6T17-Q1 Hex Schmitt-Trigger Buffers contain six independent buffers with Schmitt-trigger inputs. Each gate performs the Boolean function Y = A in positive logic. The output level is referenced to the supply voltage (VCC) and supports 1.8V, 2.5V, 3.3V, and 5V CMOS levels.