The LT1719 is an UltraFast TM comparator optimized for low voltage operation. The input voltage range extends from 100mV below VEE to 1.2V below VCC. Internal hysteresis makes the LT1719 easy to use even with slow moving input signals.
The LT1719 comparator from Linear Technology offers ultra‑fast performance (4.5 ns at 20 mV overdrive) and low power consumption (4.2 mA at 3 V). It features separate input and output supplies, rail‑to‑rail TTL/CMOS‑compatible output, and a shutdown pin for minimal quiescent current (0.1 pA).
Typical applications include high‑speed line‑receiver, zero‑crossing detector, and sine‑to‑square‑wave conversion. The device is available in SO‑8 and 6‑lead SOT‑23 packages with flexible supply configurations for 3 V–5 V operation.
| Propagation Delay (20 mV overdrive) | 4.5 ns |
|---|---|
| Supply Current (3 V operation) | 4.2 mA |
| Shutdown Current | 0.1 pA |
| Storage Temperature Range | -65 °C to 150 °C |
| Input Offset Voltage | 0.4 mV to 2.5 mV |
| Package Type (SO‑8) | 8‑lead plastic SO‑8 |
| Package Type (SOT‑23) | 6‑lead plastic SOT‑23 |
The LT1719 typically exhibits a propagation delay of 4.5 ns when driven with a 20 mV overdrive.
The device can operate from a single 3 V to 5 V supply, with separate input and output supplies allowed for flexible configurations.
The LT1719 in the SO‑8 package has eight pins; pin 6 (SHDN) is the shutdown pin, which must be pulled low to enable the comparator.