Dual comparator in a TSOT-23-6 footprint
The LT6700HS6-2#TRM is a dual general-purpose comparator from Analog Devices' Over-The-Top series, packing two comparator elements into a single TSOT-23-6 package. Each channel provides an open-collector output with 13.5mV of internal hysteresis, eliminating the need for external positive-feedback resistors in most threshold-detection circuits. The Over-The-Top designation means the input common-mode range extends above the positive supply rail — the part can sense a signal 1.4V above V+ without damage or phase reversal. This is the defining feature for high-side current sensing or monitoring a voltage that floats above the local supply.
Supply range and quiescent budget
The single-supply range spans 1.4V to 18V, covering a 3.3V logic rail, a 5V industrial bus, a 12V automotive supply, or a single Li-ion cell near end-of-discharge. Maximum quiescent current is 19µA for both comparators — a 9.5µA per-channel budget that keeps the part viable in always-on sensor nodes and battery-backed supervisory circuits. At 29µs maximum propagation delay, the LT6700HS6-2#TRM is sized for monitoring, overvoltage/undervoltage detection, and slow feedback loops rather than high-frequency PWM or zero-crossing switching. The 0.01µA maximum input bias at 18V means negligible loading on high-impedance sources like voltage dividers or thermistor bridges.
Temperature grade and package integration
The -40°C to 125°C operating range qualifies the LT6700HS6-2#TRM for industrial control, automotive under-hood, and outdoor telecom equipment where ambient temperature swings are wide. The TSOT-23-6 package (1.6 mm max height) suits space-constrained PCBs, though the 0.65 mm pitch demands careful soldering profile control and a clean stencil aperture.