Part # MAX6841-MAX6845 datasheet

Part Manufacturer: Maxim


Part Description: MAX6841-45 DS

Part Details:

19-2625; Rev 2; 12/05 Ultra-Low-Voltage µP Reset Circuits and Voltage Detectors MAX6841­MAX6845 General Description Features The MAX6841­MAX6845 microprocessor (µP) supervi- Factory-Set Reset Threshold Voltages for sory circuits monitor ultra-low-voltage power supplies in Monitoring Supplies from 0.9V to 1.5V µP and digital systems. They provide excellent circuit (MAX6841/MAX6842) reliability at low cost by eliminating external compo- Adjustable Threshold RESET IN nents and adjustments when used with +0.9V to +1.5V (MAX6843/MAX6844/MAX6845) systems. Factory-trimmed reset thresholds are avail- Low Power Consumption: 5.7µA (typ) able for the MAX6841/MAX6842. The MAX6843/MAX6844/MAX6845 provide a RESET IN input, allowing ±2.5% Reset Threshold Accuracy the user to externally adjust the reset threshold. The Over Temperature MAX6841­MAX6845 family features a debounced man- Five Timeout Periods: 150µs (Voltage Detector ual reset input (MR). The reset comparator is designed Version), 1.5ms, 30ms, 210ms, and 1.68s to ignore fast transients on VCC. Available in Three Output Configurations The MAX6841­MAX6845 assert a reset signal whenev- Push-Pull RESET er the V Push-Pull RESET CC supply voltage declines below a preset or adjustable threshold or whenever manual reset (MR) is Open-Drain RESET asserted. Reset remains asserted for a fixed timeout Guaranteed Reset Valid to VCC = 0.55V delay after VCC has risen above the reset threshold and (Active Low) when manual reset is deasserted. Five timeout periods Manual Reset Input are available for each part: 150µs (voltage detector ver- Immune to Short V sion), 1.5ms, 30ms, 210ms, and 1.68s (typ). CC Transients Space-Saving 5-Pin SOT23 Package The MAX6841/MAX6843 have an active-low push-pullreset output. The MAX6841/MAX6842/MAX6844 have Ordering Information an active-high push-pull reset output, and theMAX6842/MAX6845 have an active-low open-drain PART TEMP RANGE PIN-PACKAGE reset output. The active-low open-drain reset output MAX6841_UKD_-T -40°C to +85°C

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MAX6841-MAX6845.pdf Datasheet