LT1721 Datasheet | Linear Technology

LT1720/LT1721 Features Dual/Quad, 4.5ns, Single Supply 3V/5V parators with Rail-to-Rail Outputs DESCRIPTION n Ultra Fast: 4.5ns at 20m V Overdrive 7ns at 5m V Overdrive n Low Power: 4m A per parator n Optimized for 3V and 5V Operation n Pinout Optimized for High Speed Ease of Use n Input Voltage Range Extends 100m V Below Negative Rail n TTL/CMOS patible Rail-to-Rail Outputs n Internal Hysteresis with Specified Limits n Low Dynamic Current Drain; 15μA/(V-MHz), Dominated by Load In Most Circuits n Tiny 3mm × 3mm × 0.75mm DFN Package (LT1720) APPLICATIONS n High Speed Differential Line Receiver n Crystal Oscillator Circuits n Window parators n Threshold Detectors/Discriminators n Pulse Stretchers n Zero-Crossing Detectors n High Speed Sampling Circuits The LT®1720/LT1721 are Ultra Fast TM dual/quad parators optimized for single supply operation, with a supply voltage range of 2.7V to 6V. The input voltage range extends from 100m V 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. The LT1720 is available in three 8-pin packages; three pins per parator plus power and ground. In addition to SO and MSOP packages, a 3mm × 3mm low profile (0.8mm) dual fine pitch leadless package (DFN) is available for space limited applications. The LT1721 is available in the 16-pin SSOP and S packages. The pinouts of the LT1720/LT1721 minimize parasitic effects by placing the most sensitive inputs (inverting) away from the outputs, shielded by the power rails. The LT1720/LT1721 are ideal for systems where small size and low power are paramount. L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. Ulta Fast is a trademark of Linear Technology Corporation. All...