The LTC ®1440/LTC1441/LTC1442 are ultralow power single and dual comparators with built-in references.
The LTC1440/LTC1441/LTC1442 family are ultralow‑power comparators with built‑in reference voltages. They operate from a single 2 V to 11 V supply or a dual +1 V to +5.5 V supply, offer adjustable hysteresis, TTL/CMOS compatible outputs, and can continuously source up to 40 mA. The reference output can drive up to 0.01 µF without oscillation.
Available in 8‑pin PDIP, SO, MSOP and DFN packages, these devices are suited for battery‑powered system monitoring, threshold detectors, window comparators, and oscillator circuits. The document includes detailed electrical specifications, typical performance curves, and package dimensions.
| Quiescent Current (typical, LTC1440) | 2.1 µA |
|---|---|
| Supply Voltage Range (single supply) | 2 V to 11 V |
| Supply Voltage Range (dual supply) | +1 V to +5.5 V |
| Continuous Output Source Current | 40 mA |
| Reference Voltage (no‑load) | 1.182 V ±1 % |
| Propagation Delay (10 mV overdrive) | 12 µs |
| Package (LTC1440 DFN) | 3 mm × 3 mm × 0.8 mm DFN |
The LTC1440 has a typical quiescent current of 2.1 µA.
It operates from 2 V to 11 V on a single supply.
The outputs can continuously source up to 40 mA.
The LTC1440 is offered in 8‑pin PDIP, SO, MSOP, and DFN packages.