MAX6801:3-Pin, Low-Power µP Reset Circuits

3-Pin/4-Pin, Low-Power uP Reset Circuits with Manual Reset

The MAX6800/MAX6801/MAX6802 microprocessor (µP) supervisory circuits monitor the power supplies in 2.85V to 5.0V µP and digital systems. They increase circuit reliability and reduce cost by eliminating external components and adjustments. These devices perform a single function—they assert a reset signal whenever the VCC supply voltage declines below a preset threshold, keeping it asserted for a preset timeout period after VCC has risen above the reset threshold. The only difference among the three devices is their output. The MAX6801 (push/pull) and MAX6802 (open-drain) have an active-low RESET output, while the MAX6800 (push/pull) has an active-high RESET output. The MAX6800/MAX6801 are guaranteed to be in the correct state for VCC down to 0.7V. The MAX6802 is guaranteed to be in the correct state for VCC down to 1.0V. The reset comparator in these ICs is designed to ignore fast transients on VCC. Reset thresholds are factory-trimmable between 2.63V and 4.80V, in approximately 100mV increments. These devices are available with a 1ms (min), 20ms (min), or 100ms (min) reset pulse width. Ideal for space-critical applications, the MAX6800/MAX6801/MAX6802 come packaged in a 3-pin SOT23. For a lower threshold voltage version, see the MAX6332/MAX6333/MAX6334.

Key Features
  • Ultra-Low 0.7V Operating Supply Voltage
  • Low 4.0µA Supply Current
  • Precision Monitoring of 2.85V to 5.0V Power-Supply Voltages
  • Reset Thresholds Available from 2.63V to 4.80V, in Approximately 100mV Increments
  • Fully Specified over Temperature
  • Three Power-On Reset Timeout Periods Available (1ms min, 20ms min, 100ms min)
  • Low Cost
  • Three Available Output Structures: Push/Pull RESET, Push/Pull active-low RESET, Open-Drain active-low RESET
  • Guaranteed RESET/active-low RESET Valid to VCC = 0.7V (MAX6800/MAX6801)
  • Power-Supply Transient Immunity
  • No External Components Required
  • 3-Pin SOT23 Package
  • Pin Compatible with MAX809/MAX810, MAX6326/MAX6327/MAX6328, and MAX6346/MAX6347/MAX6348
MAX6800, MAX6801, MAX6802: Typical Operating Circuit
MAX6800, MAX6801, MAX6802: Typical Operating Circuit
Applications/Uses
  • Automotive ABS
  • Automotive Passenger Compartment
  • Bridges
  • Building Energy Management (HVAC)
  • Cable Modems
  • Cell Phone Base Stations
  • Cell Phones
  • Computers: Desktop, Workstation, Server
  • Consumer Audio
  • Digital Still Cameras
  • Digital Television (Receivers, Set-Top Boxes)
  • Global Positioning Systems (GPS)
  • Handy Terminals
  • Network Hubs, Switches, Routers
  • Notebook Computers
  • Pagers
  • Palmtop Computers
  • PDAs and Organizers
  • Pen Entry Palmtops
  • Point-of-Sale Terminals
  • Portable Patient Monitoring/Drug Delivery
  • Routers/Switches
  • Storage Systems
  • Test Measurement Systems
  • Wireless Data
DataSheet
titleDownload file
MAX6800-MAX6802 Data SheetMAX6800-MAX6802.pdf
Parametrics
Part NumberReset Thresh.
(V)
Reset OuttRESETWatchdog FeatureICC
(µA)
Package/PinsBudgetary
Price
minmaxSee Notes
MAX68002.5 to 3.3
3.3 to 5.5
Active High
Push-Pull
1ms to 15ms
15ms to 85ms
85ms to 300ms
No Watchdog12SOT/3$1.51 @1k
MAX6801Active Low
Push-Pull
SOT/3$1.22 @1k
MAX6802Active Low
Open Drain
SOT/3$1.51 @1k
Quality and Environmental Data
Related Products
  • MAX809:3-Pin Microprocessor Reset Circuits
  • MAX810:3-Pin Microprocessor Reset Circuits
  • MAX811:4-Pin µP Voltage Monitors with Manual Reset Input
  • MAX6333:3-Pin, Ultra-Low-Voltage, Low-Power µP Reset Circuits
  • MAX6332:3-Pin, Ultra-Low-Voltage, Low-Power µP Reset Circuits
  • MAX6334:3-Pin, Ultra-Low-Voltage, Low-Power µP Reset Circuits
  • MAX6335:4-Pin, Ultra Low-Voltage, Low-Power µP Reset Circuits with Manual Reset
  • MAX6336:4-Pin, Ultra Low-Voltage, Low-Power µP Reset Circuits with Manual Reset
  • MAX6337:4-Pin, Ultra Low-Voltage, Low-Power µP Reset Circuits with Manual Reset
  • MAX6346:3-Pin, Ultra-Low-Power SC70/SOT µP Reset Circuits
  • MAX6327:3-Pin, Ultra-Low-Power SC70/SOT µP Reset Circuits
  • MAX6328:3-Pin, Ultra-Low-Power SC70/SOT µP Reset Circuits
  • MAX6326:3-Pin, Ultra-Low-Power SC70/SOT µP Reset Circuits
  • MAX6347:3-Pin, Ultra-Low-Power SC70/SOT µP Reset Circuits
  • MAX6348:3-Pin, Ultra-Low-Power SC70/SOT µP Reset Circuits
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX6801UR26D1+TActiveSOT;-40°C to +125°CSee data sheet
MAX6801UR26D1-TNo Longer AvailableMAX6801UR26D1+TSOT,;3 pin;8 mm²-40°C to +125°CNo
MAX6801UR26D2-TNo Longer AvailableMAX6801UR26D2+TSOT,;3 pin;8 mm²-40°C to +125°CNo
MAX6801UR26D3+TActiveSOT,;3 pin;8 mm²-40°C to +125°CLead Free
MAX6801UR26D3-TNo Longer AvailableMAX6801UR26D3+TSOT,;3 pin;8 mm²-40°C to +125°CNo
MAX6801UR27D1+TActiveSOT;-40°C to +125°CSee data sheet
MAX6801UR27D1-TNo Longer AvailableSOT,;3 pin;8 mm²-40°C to +125°CNo
MAX6801UR27D2+TActiveSOT;-40°C to +125°CSee data sheet
MAX6801UR27D2-TNo Longer AvailableSOT,;3 pin;8 mm²-40°C to +125°CNo
MAX6801UR27D3+TActiveSOT;-40°C to +125°CSee data sheet
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX6801UR27D3-TNo Longer AvailableMAX6801UR27D3+TSOT,;3 pin;8 mm²-40°C to +125°CNo
MAX6801UR28D1+TActiveSOT;-40°C to +125°CSee data sheet
MAX6801UR28D1-TNo Longer AvailableSOT,;3 pin;8 mm²-40°C to +125°CNo
MAX6801UR28D2+TActiveSOT;-40°C to +125°CSee data sheet
MAX6801UR28D2-TNo Longer AvailableSOT,;3 pin;8 mm²-40°C to +125°CNo
MAX6801UR28D3+TActiveSOT,;3 pin;8 mm²-40°C to +125°CLead Free
MAX6801UR28D3-TNo Longer AvailableMAX6801UR28D3+TSOT,;3 pin;8 mm²-40°C to +125°CNo
MAX6801UR29D1+ActiveSOT,;3 pin;8 mm²-40°C to +125°CLead Free
MAX6801UR29D1+TActiveSOT,;3 pin;8 mm²-40°C to +125°CLead Free
MAX6801UR29D1-TNo Longer AvailableMAX6801UR29D1+TSOT,;3 pin;8 mm²-40°C to +125°CNo
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX6801UR29D1/V+TNo Longer AvailableMAX16083AXR32B/V+TSOT,;3 pin;8 mm²-40°C to +105°CLead Free
MAX6801UR29D2+ActiveSOT,;3 pin;8 mm²-40°C to +125°CLead Free
MAX6801UR29D2+TActiveSOT,;3 pin;8 mm²-40°C to +125°CLead Free
MAX6801UR29D2-TNo Longer AvailableMAX6801UR29D2+TSOT,;3 pin;8 mm²-40°C to +125°CNo
MAX6801UR29D3+ActiveSOT,;3 pin;8 mm²-40°C to +125°CLead Free
MAX6801UR29D3+TActiveSOT,;3 pin;8 mm²-40°C to +125°CLead Free
MAX6801UR29D3-TNo Longer AvailableMAX6801UR29D3+TSOT,;3 pin;8 mm²-40°C to +125°CNo
MAX6801UR30D1+TActiveSOT;-40°C to +125°CSee data sheet
MAX6801UR30D1-TNo Longer AvailableMAX6801UR30D1+TSOT,;3 pin;8 mm²-40°C to +125°CNo
MAX6801UR30D2+TActiveSOT;-40°C to +125°CSee data sheet
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX6801UR30D2-TNo Longer AvailableMAX6801UR30D2+TSOT,;3 pin;8 mm²-40°C to +125°CNo
MAX6801UR30D3+TActiveSOT;-40°C to +125°CSee data sheet
MAX6801UR30D3-TNo Longer AvailableSOT,;3 pin;8 mm²-40°C to +125°CNo
MAX6801UR31D1+TActiveSOT;-40°C to +125°CSee data sheet
MAX6801UR31D1-TNo Longer AvailableMAX6801UR31D1+TSOT,;3 pin;8 mm²-40°C to +125°CNo
MAX6801UR31D2+TActiveSOT,;3 pin;8 mm²-40°C to +125°CLead Free
MAX6801UR31D2-TNo Longer AvailableSOT,;3 pin;8 mm²-40°C to +125°CNo
MAX6801UR31D3+ActiveSOT,;3 pin;8 mm²-40°C to +125°CLead Free
MAX6801UR31D3+TActiveSOT,;3 pin;8 mm²-40°C to +125°CLead Free
MAX6801UR31D3-TNo Longer AvailableMAX6801UR31D3+TSOT,;3 pin;8 mm²-40°C to +125°CNo
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX6801UR32D1+TActiveSOT;-40°C to +125°CSee data sheet
MAX6801UR32D1-TNo Longer AvailableSOT,;3 pin;8 mm²-40°C to +125°CNo
MAX6801UR32D2+TActiveSOT;-40°C to +125°CSee data sheet
MAX6801UR32D2-TNo Longer AvailableSOT,;3 pin;8 mm²-40°C to +125°CNo
MAX6801UR32D3+TActiveSOT;-40°C to +125°CSee data sheet
MAX6801UR32D3-TNo Longer AvailableSOT,;3 pin;8 mm²-40°C to +125°CNo
MAX6801UR33D1+TActiveSOT,;3 pin;8 mm²-40°C to +125°CLead Free
MAX6801UR33D1-TNo Longer AvailableMAX6801UR33D1+TSOT,;3 pin;8 mm²-40°C to +125°CNo
MAX6801UR33D2+TActiveSOT;-40°C to +125°CSee data sheet
MAX6801UR33D2-TNo Longer AvailableSOT,;3 pin;8 mm²-40°C to +125°CNo
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