DESCRIPTION
The LT®1720/LT1721 are UltraFast™ dual/quad comparators optimized for single supply operation, with a supply voltage range of 2.7V to 6V. The input voltage range extends from 100mV below ground to 1.2V below the supply voltage. Internal hysteresis makes the LT1720/LT1721 easy to use even with slow moving input signals. The rail-to-rail outputs directly interface to TTL and CMOS. Alternatively, the symmetric output drive can be harnessed for analog applications or for easy translation to other single supply logic levels.

FEATURES
■ UltraFast: 4.5ns at 20mV Overdrive 7ns at 5mV Overdrive
■ Low Power: 4mA per Comparator
■ Optimized for 3V and 5V Operation
■ Pinout Optimized for High Speed Ease of Use
■ Input Voltage Range Extends 100mV Below Negative Rail
■ TTL/CMOS Compatible Rail-to-Rail Outputs
■ Internal Hysteresis with Specified Limits
■ Low Dynamic Current Drain; 15µA/(V-MHz), Dominated by Load In Most Circuits