Single comparator, open-collector output — what it means on the board
The Texas Instruments TLV1701AIDBVT is a single general-purpose comparator with an open-collector output, housed in a SOT-23-5 package. It operates from a single supply of 2.2 V to 36 V, or dual supplies of ±1.1 V to ±18 V.
Supply range and output drive — sizing the pull-up
The open-collector output sinks up to 20 mA typical. That's enough to drive a standard logic input, an optocoupler LED, or a small relay coil with an external pull-up resistor. The pull-up resistor value must be chosen so the output voltage at 20 mA stays below the logic low threshold of the receiving device. At 560 ns propagation delay, this part is not for high-frequency PWM or fast comparator loops — it's for level detection, window comparators, and fault monitoring where a few microseconds of response time are acceptable.
Temperature grade and environment
Rated for -40°C to 125°C, the TLV1701AIDBVT fits into engine-bay electronics, outdoor base stations, and factory-floor sensors. The SOT-23-5 footprint is small enough for space-constrained PCBs but still hand-solderable for prototyping. Input bias current is 0.015 µA max, and input offset voltage is 3.5 mV max — both adequate for general-purpose threshold sensing where precision is not critical.