Description

The MAX987/MAX988/MAX991/MAX992/MAX995/MAX996 single/dual/quad micropower comparatorsfeature low-voltage operation and rail-to-rail inputs andoutputs. Their operating voltage ranges from +2.5V to+5.5V, making them ideal for both 3V and 5V systems.These comparators also operate with ±1.25V to ±2.75Vdual supplies. They consume only 48µA per comparatorwhile achieving a 120ns propagation delay.Input bias current is typically 1.0pA, and input offset voltageis typically 0.5mV. Internal hysteresis ensures cleanoutput switching, even with slow-moving input signals.The output stage's unique design limits supply-currentsurges while switching, virtually eliminating the supplyglitches typical of many other comparators. TheMAX987/MAX991/MAX995 have a push-pull outputstage that sinks as well as sources current. Large internaloutput drivers allow rail-to-rail output swing withloads up to 8mA. The MAX988/MAX992/MAX996 havean open-drain output stage that can be pulled beyondVCC to 6V (max) above VEE. These open-drain versionsare ideal for level translators and bipolar to single-endedconverters.The single MAX987/MAX988 are available in tiny 5-pinSC70 packages, while the dual MAX991/MAX992 areavailable in ultra-small µMAX® package.ApplicationsDigital-Line ReceiversGround/Supply SensingIR ReceiversLevel TranslatorsMobile CommunicationsPortable Battery-Powered SystemsThreshold DetectorsWindow ComparatorsZero-Crossing Detectors