MAX691A:Microprocessor Supervisory Circuits

Industry-Standard, Full-Function µP Supervisor

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 chip-enable propagation delay. Features include write protection of CMOS RAM or EEPROM, separate watchdog outputs, backup-battery switchover, and a RESET-bar 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%.

Key Features
  • 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 Active-Low RESET 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, Plastic DIP, and TSSOP Packages
MAX691A, MAX693A, MAX800L, MAX800M: Typical Operating Circuit
MAX691A, MAX693A, MAX800L, MAX800M: Typical Operating Circuit
Applications/Uses
  • Computers: Desktop, Workstation, Server
  • Controllers
  • Critical µP Monitoring
  • Intelligent Instruments
DataSheet
titleDownload file
MAX691A-MAX800M Data SheetMAX691A-MAX800M.pdf
Parametrics
Part NumberReset Thresh.
(V)
Reset OutICC
(µA)
Oper. Temp.
(°C)
Package/PinsBudgetary
Price
maxSee Notes
MAX691A4.5 to 5.0Active High
Active Low
Push-Pull
100-55 to +125
-40 to +85
0 to +70
CDIP(N)/16
PDIP(N)/16
SOIC(N)/16
SOIC(W)/16
TSSOP/16
$3.54 @1k
MAX693A4.0 to 4.5CDIP(N)/16
PDIP(N)/16
SOIC(N)/16
SOIC(W)/16
TSSOP/16
$3.30 @1k
MAX8003.3 to 5.5PDIP(N)/16
SOIC(N)/16
TSSOP/16
$10.46 @1k
Quality and Environmental Data
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX691AC/DActiveDICE SALES,;NA pin;DICE S;0°C to +70°CSee data sheet
MAX691ACPENo Longer AvailableMAX691ACPE+PDIP(N),;16 pin;158.4 mm²0°C to +70°CNo
MAX691ACPE+ActivePDIP(N),;16 pin;158.4 mm²0°C to +70°CLead Free
MAX691ACSENo Longer AvailableMAX691ACSE+SOIC(N),;16 pin;62 mm²0°C to +70°CNo
MAX691ACSE+ActiveSOIC(N),;16 pin;62 mm²0°C to +70°CLead Free
MAX691ACSE+TActiveSOIC(N),;16 pin;62 mm²0°C to +70°CLead Free
MAX691ACSE-TNo Longer AvailableMAX691ACSE+TSOIC(N),;16 pin;62 mm²0°C to +70°CNo
MAX691ACUENo Longer AvailableMAX691ACUE+TSSOP,;16 pin;33.4 mm²0°C to +70°CNo
MAX691ACUE+ActiveTSSOP,;16 pin;33.4 mm²0°C to +70°CLead Free
MAX691ACUE+TActiveTSSOP,;16 pin;33.4 mm²0°C to +70°CLead Free
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX691ACUE-TNo Longer AvailableMAX691ACUE+TTSSOP;16 pin0°C to +70°CSee data sheet
MAX691ACWENo Longer AvailableMAX691ACWE+SOIC(W),;16 pin;111.8 mm²0°C to +70°CNo
MAX691ACWE+ActiveSOIC(W),;16 pin;111.8 mm²0°C to +70°CLead Free
MAX691ACWE+TActiveSOIC(W),;16 pin;111.8 mm²0°C to +70°CLead Free
MAX691ACWE-TNo Longer AvailableMAX691ACWE+TW.SO;16 pin0°C to +70°CSee data sheet
MAX691AEJEActiveCDIP(N),;16 pin;173.5 mm²-40°C to +85°CNo
MAX691AEPENo Longer AvailableMAX691AEPE+PDIP(N),;16 pin;158.4 mm²-40°C to +85°CNo
MAX691AEPE+ActivePDIP(N),;16 pin;158.4 mm²-40°C to +85°CLead Free
MAX691AESENo Longer AvailableMAX691AESE+SOIC(N),;16 pin;62 mm²-40°C to +85°CNo
MAX691AESE+ActiveSOIC(N),;16 pin;62 mm²-40°C to +85°CLead Free
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX691AESE+TActiveSOIC(N),;16 pin;62 mm²-40°C to +85°CLead Free
MAX691AESE-TNo Longer AvailableMAX691AESE+TSOIC(N),;16 pin;62 mm²-40°C to +85°CNo
MAX691AESE/GG8ActiveSOIC (;-40°C to +85°CSee data sheet
MAX691AEUENo Longer AvailableMAX691AEUE+TSSOP,;16 pin;33.4 mm²-40°C to +85°CNo
MAX691AEUE+ActiveTSSOP,;16 pin;33.4 mm²-40°C to +85°CLead Free
MAX691AEUE+TActiveTSSOP,;16 pin;33.4 mm²-40°C to +85°CLead Free
MAX691AEUE-TNo Longer AvailableMAX691AEUE+TTSSOP;16 pin-40°C to +85°CSee data sheet
MAX691AEWENo Longer AvailableMAX691AEWE+SOIC(W),;16 pin;111.8 mm²-40°C to +85°CNo
MAX691AEWE+ActiveSOIC(W),;16 pin;111.8 mm²-40°C to +85°CLead Free
MAX691AEWE+TActiveSOIC(W),;16 pin;111.8 mm²-40°C to +85°CLead Free
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX691AEWE-TNo Longer AvailableMAX691AEWE+TSOIC(W),;16 pin;111.8 mm²-40°C to +85°CNo
MAX691AEWE/GG8ActiveSOIC (;-40°C to +85°CSee data sheet
MAX691AMJEActiveCDIP(N),;16 pin;173.5 mm²-55°C to +125°CNo
MAX691AMJE/883BActiveCDIP(N),;16 pin;173.5 mm²-55°C to +125°CNo
MAX691AMSE/PR+ActiveSOIC(N),;16 pin;62 mm²-55°C to +125°CLead Free
MAX691A-MAX800M.pdf MAX800
MAX691A.pdf MAX691A
MAX691A-MAX800M.pdf MAX800M