Single-bit buffer with Schmitt-trigger input for noise-prone rails
The Texas Instruments SN74AUP1G17DBVR is a single non-inverting buffer from the 74AUP low-power logic family. Its Schmitt-trigger input provides clean switching even on slow or noisy signal edges, making it a natural choice for debouncing pushbuttons, conditioning sensor outputs, or squaring up oscillator signals in battery-powered and portable gear. Housed in a 5-pin SOT-23-5, the part occupies minimal board area while remaining hand-solderable for prototype rework.
Supply voltage and temperature — fit for industrial and portable designs
Rated for -40°C to 85°C ambient, the buffer suits indoor industrial control, outdoor telecom cabinets, and consumer portable products that see temperature extremes but not under-hood automotive conditions. The 4 mA output drive at both high and low levels is typical for a 1-bit buffer — adequate for driving a single CMOS load, a small LED, or the clock input of a downstream logic gate. It is not intended for heavy fan-out or line driving.
Lifecycle and sourcing — active, no LTB risk
TI lists the SN74AUP1G17DBVR as Active with ROHS3 compliance. For dual-sourcing flexibility, the SN74LVC2G17QDCKRQ1 is a functionally similar dual buffer with automotive AEC-Q100 qualification and a wider temperature range (-40°C to 125°C), but it operates from a 1.65 V minimum supply and comes in a different footprint — verify the pinout before substituting.
What the ratings mean for the BOM
The Schmitt-trigger input eliminates the need for an external RC filter on noisy lines — the hysteresis is built in. This saves two passives and a board via per channel.