The LT1720/LT1721 are single supply 3V/5V comparators with 4.5ns response time and rail-to-rail outputs, making them well suited for TTL and CMOS circuits.
The LT1720/LT1721 comparators from Linear Technology are optimized for single‑supply operation, offering a supply voltage range of 2.7 V to 6 V and input voltage capability from 100 mV below ground to 1.2 V below VCC. They feature rail‑to‑rail outputs compatible with TTL and CMOS, internal hysteresis, and low quiescent current, making them suitable for high‑speed applications such as crystal oscillators, window comparators, and threshold detectors.
The device is offered in several compact packages: three 8‑pin options (DFN, MSOP, SO) for the LT1720 and 16‑pin SSOP or SO packages for the LT1721. Detailed electrical characteristics, pin functions, and layout recommendations are provided to aid designers in implementing the comparators in high‑speed circuits.