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MAX808LMJA Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX808LMJA Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 12 page _______________General Description The MAX801/MAX808 microprocessor (µP) supervisory circuits monitor and control the activities of +5V µPs by providing backup-battery switchover, low-line indica- tion, and µP reset. Additional features include a watch- dog for the MAX801 and CMOS RAM write protection for the MAX808. The MAX801/MAX808 offer a choice of reset-threshold voltage (denoted by suffix letter): 4.675V (L), 4.575V (N), and 4.425V (M). These devices are available in 8-pin DIP and SO packages. ________________________Applications Computers Controllers Intelligent Instruments Critical µP Power Monitoring Portable/Battery-Powered Equipment Embedded Systems ____________________________Features o Precision Voltage Monitoring, ±1.5% Reset Accuracy o 200ms Power-OK/Reset Time Delay o RESET Output (MAX808) RESET and RESET Outputs (MAX801) o Watchdog Timer (MAX801) o On-Board Gating of Chip-Enable Signals (MAX808): Memory Write-Cycle Completion 3ns CE Gate Propagation Delay o 1µA Standby Current o Power Switching: 250mA in VCC Mode 20mA in Battery-Backup Mode o MaxCap™/SuperCap™ Compatible o RESET Guaranteed Valid to VCC = 1V o Low-Line Threshold 52mV Above Reset Threshold 8-Pin µP Supervisory Circuits with ±1.5% Reset Accuracy ________________________________________________________________ Maxim Integrated Products 1 0.1 µF 0.1 µF 0.1 µF µP POWER POWER FOR CMOS RAM NMI BATT VCC OUT +5V GND RESET FROM I/O SYSTEM OR ADDRESS DECODER TO CMOS RAM CE IN CE OUT LOWLINE RESET MAX808 µP SYSTEM __________Typical Operating Circuit 19-1086; Rev 0; 6/96 PART* MAX801_CPA MAX801_CSA MAX801_EPA -40°C to +85°C 0°C to +70°C 0°C to +70°C TEMP. RANGE PIN-PACKAGE 8 Plastic DIP 8 SO 8 Plastic DIP ______________Ordering Information For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800 MaxCap is a trademark of The Carborundum Corp. SuperCap is a trademark of Baknor Industries. Pin Configurations appear at end of data sheet. MAX801_ESA MAX801_MJA MAX808_CPA 0°C to +70°C -55°C to +125°C -40°C to +85°C 8 SO 8 CERDIP** 8 Plastic DIP MAX808_CSA 0°C to +70°C 8 SO MAX808_EPA MAX808_ESA MAX808_MJA -55°C to +125°C -40°C to +85°C -40°C to +85°C 8 Plastic DIP 8 SO 8 CERDIP** * These parts offer a choice of reset threshold voltage. From the table below, select the suffix corresponding to the desired threshold and insert it into the blank to complete the part number. **Contact factory for availability and processing to MIL-STD-883. RESET THRESHOLD (V) L 4.60 4.675 N 4.50 4.75 M 4.35 4.575 4.65 4.425 4.50 MIN MAX SUFFIX TYP |
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