Figures 1-28 and 1-29 show a typical application circuit and pin configurations, respectively, for the MAX691 A /693A /800L / 800M. The ICs are similar to that described for Figs. 1-J through 1-M, but with more reliability and added features.
The ICs improve performance with 35-μA supply current, 200-ms typical reset delay on power-up, and 6-ns chip-enable propagation delay. Other features include write protection of CMOS RAM or EEPROM, separate watchdog outputs, battery-backup switchover, and a reset output that is valid with VCC down to 1 V.
The MAX691A/MAX800L have a 4.65-V typical reset-threshold. The MAX693A/ MAX800M reset threshold is 4.4V (typical). The MAX800L/MAX800M is guaranteed to deliver power-fail accuracies to 12%. MAXIM HIGH-RELIABILITY DATA Book, 1993, P. 5-19.
The MAX691A/MAX693A/MAX800L/MAX800M microprocessor (µP) supervisory circuits are pin-compatible upgrades to the MAX691, MAX693, and MAX695. They improve performance with 30µA supply current, 200ms typ reset active delay on power-up, and 6ns chipenable propagation delay. Features include write protection of CMOS RAM or EEPROM, separate watchdog
outputs, backup-battery switchover, and a RESET output that is valid with VCC down to 1V. The MAX691A/ MAX800L have a 4.65V typical reset-threshold voltage, and the MAX693A/MAX800M's reset threshold is 4.4V typical. The MAX800L/MAX800M guarantee power-fail accuracies to ±2%.
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ComputersControllersIntelligent InstrumentsAutomotive SystemsCritical µP Power Monitoring
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© 200ms Power-OK/Reset Timeout Period© 1µA Standby Current, 30µA Operating Current© On-Board Gating of Chip-Enable Signals,10ns Max Delay© MaxCap™ or SuperCap™ Compatible© Guaranteed R RE ES SE ET T Assertion to VCC = +1V© Voltage Monitor for Power-Fail or Low-Battery Warning© Power-Fail Accuracy Guaranteed to ±2% (MAX800L/M)© Available in 16-Pin Narrow SO and Plastic DIP Packages
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Terminal Voltage (with respect to GND)
VCC .......................................................................-0.3V to +6V
VBATT...................................................................-0.3V to +6V
All Other Inputs .....................................-0.3V to (VOUT + 0.3V)
Input Current
VCC Peak...........................................................................1.0A
VCC Continuous.............................................................250mA
VBATT Peak ..................................................................250mA
VBATT Continuous..........................................................25mA
GND, BATT ON.............................................................100mA
All Other Outputs ............................................................25mA
Continuous Power Dissipation (TA = +70°C)
Plastic DIP (derate 10.53mW/°C above +70°C) ..........842mW
Narrow SO (derate 8.70mW/°C above +70°C) ...........696mW
Wide SO (derate 9.52mW/°C above +70°C)...............762mW
CERDIP (derate 10.00mW/°C above +70°C) ..............800mW
Operating Temperature Ranges
MAX69_AC_ _/MAX800_C_ _ .............................0°C to +70°C
MAX69_AE_ _/MAX800_E_ _ ...........................-40°C to +85°C
MAX69_AMJE ................................................-55°C to +125°C
Storage Temperature Range ........................-65°C to +160°C
Lead Temperature (soldering, 10sec) .........................+300°C
Post a Buying Lead
Required Field 
