The HA-4900 series are monolithic, quad, precisioncomparators offering fast response time, low offset voltage,low offset current and virtually no channel-to-channelcrosstalk for applications requiring accurate, high speed,signal level detection. These comparators can sense signalsat ground level while being operated from either a single +5Vsupply (digital systems) or from dual supplies (analognetworks) up to ±15V. The HA-4900 series contains a uniquecurrent driven output stage which can be connected to logicsystem supplies (VLOGIC+ and VLOGIC-) to make the outputlevels directly compatible (no external components needed)with any standard logic or special system logic levels. Incombination analog/digital systems, the design employed inthe HA-4900 series input and output stages preventstroublesome ground coupling of signals between analog anddigital portions of the system.
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