MAX6335:4-Pin, Ultra Low-Voltage, Low-Power µP Reset Circuits with Manual Reset

Industry's-First Stand-Alone Reset ICs for 1.8V supplies with Manual Reset in SOT Package

The MAX6335/MAX6336/MAX6337 microprocessor (µP) supervisory circuits monitor the power supplies in 1.8V to 3.3V µP and digital systems. They increase circuit reliability and reduce cost by eliminating external components and adjustments. They also feature a debounced manual-reset input. These devices perform a single function: they assert a reset signal whenever the VCC supply voltage declines below a preset threshold or whenever manual reset is asserted. Reset remains asserted for a preset timeout period after VCC has risen above the reset threshold or after manual reset is deasserted. The only difference among the three devices is their output. The MAX6336 (push/pull) and MAX6337 (open-drain) have an active-low RESET output, while the MAX6335 (push/pull) has an active-high RESET output. The MAX6335/MAX6336 are guaranteed to be in the correct state for VCC down to 0.7V. The MAX6337 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 1.6V and 2.5V, in approximately 100mV increments. There are 15 standard versions available (2500 piece minimum-order quantity); contact the factory for availability of nonstandard versions (10,000 piece minimum-order quantity). For space-critical applications, the MAX6335/MAX6336/MAX6337 come packaged in a 4-pin SOT143.

Key Features
  • Ultra-Low 0.7V Operating Supply Voltage
  • Low 3.3µA Supply Current
  • Precision Monitoring of 1.8V and 2.5V Power-Supply Voltages
  • Reset Thresholds Available from 1.6V to 2.5V, in Approximately 100mV Increments
  • Debounced Manual Reset
  • Fully Specified over Temperature
  • Three Power-On Reset Pulse Widths Available (1ms min, 20ms min, 100ms min)
  • Low Cost
  • Three Available Output Structures: Push/Pull active-low RESET, Push/Pull RESET, Open-Drain active-low RESET
  • Guaranteed RESET/active-low RESET Valid to VCC = 0.7V (MAX6335/MAX6336)
  • Power-Supply Transient Immunity
  • No External Components
  • 4-Pin SOT143 Package
  • Pin-Compatible with MAX811/MAX812 and MAX6314/MAX6315
MAX6335, MAX6336, MAX6337: Typical Operating Circuit
MAX6335, MAX6336, MAX6337: Typical Operating Circuit
Applications/Uses
  • Automotive Electronics
  • Computers: Desktop, Workstation, Server
  • Controllers
  • Critical µP and µC Power Monitoring
  • Intelligent Instruments
  • Pentium® II Computers
  • Portable Battery-Powered Equipment
DataSheet
titleDownload file
MAX6335-MAX6337 Data SheetMAX6335-MAX6337.pdf
Parametrics
Part NumberReset Thresh.
(V)
Reset OuttRESETWatchdog FeatureSupervisor FeaturesReset Thresh. Accur.
(%)
ICC
(µA)
Package/PinsBudgetary
Price
min@ +25°CmaxSee Notes
MAX63351.2 to 1.8
1.8 to 2.5
Active High
Push-Pull
1ms to 15ms
15ms to 85ms
85ms to 300ms
No WatchdogManual Reset1.87SOT/4$1.42 @1k
MAX6336Active Low
Push-Pull
SOT/4$1.35 @1k
MAX6337Active Low
Open Drain
SOT/4$1.35 @1k
Related Products
  • 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
  • MAX6315:Open-Drain SOT µP Reset Circuit
  • MAX6314:68HC11/Bidirectional-Compatible µP Reset Circuit
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX6335US16D1+TActiveSOT;-40°C to +85°CSee data sheet
MAX6335US16D1-TActiveSOT,;4 pin;8 mm²-40°C to +85°CNo
MAX6335US16D2+TActiveSOT;-40°C to +85°CSee data sheet
MAX6335US16D2-TActiveSOT,;4 pin;8 mm²-40°C to +85°CNo
MAX6335US16D3+ActiveSOT,;4 pin;8 mm²-40°C to +85°CLead Free
MAX6335US16D3+TActiveSOT,;4 pin;8 mm²-40°C to +85°CLead Free
MAX6335US16D3-TNo Longer AvailableMAX6335US16D3+TSOT,;4 pin;8 mm²-40°C to +85°CNo
MAX6335US17D1+TActiveSOT;-40°C to +85°CSee data sheet
MAX6335US17D1-TActiveSOT,;4 pin;8 mm²-40°C to +85°CNo
MAX6335US17D2+TActiveSOT;-40°C to +85°CSee data sheet
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX6335US17D2-TActiveSOT,;4 pin;8 mm²-40°C to +85°CNo
MAX6335US17D3+TActiveSOT;-40°C to +85°CSee data sheet
MAX6335US17D3-TActiveSOT,;4 pin;8 mm²-40°C to +85°CNo
MAX6335US18D1+TActiveSOT;-40°C to +85°CSee data sheet
MAX6335US18D1-TActiveSOT,;4 pin;8 mm²-40°C to +85°CNo
MAX6335US18D2+TActiveSOT;-40°C to +85°CSee data sheet
MAX6335US18D2-TActiveSOT,;4 pin;8 mm²-40°C to +85°CNo
MAX6335US18D3No Longer AvailableMAX6335US18D3+SOT,;4 pin;8 mm²-40°C to +85°CNo
MAX6335US18D3-TNo Longer AvailableMAX6335US18D3+TSOT,;4 pin;8 mm²-40°C to +85°CNo
MAX6335US19D1+TActiveSOT;-40°C to +85°CSee data sheet
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX6335US19D1-TActiveSOT,;4 pin;8 mm²-40°C to +85°CNo
MAX6335US19D2+TActiveSOT;-40°C to +85°CSee data sheet
MAX6335US19D2-TActiveSOT,;4 pin;8 mm²-40°C to +85°CNo
MAX6335US19D3+TActiveSOT;-40°C to +85°CSee data sheet
MAX6335US19D3-TActiveSOT,;4 pin;8 mm²-40°C to +85°CNo
MAX6335US20D1+TActiveSOT;-40°C to +85°CSee data sheet
MAX6335US20D1-TActiveSOT,;4 pin;8 mm²-40°C to +85°CNo
MAX6335US20D2+TActiveSOT;-40°C to +85°CSee data sheet
MAX6335US20D2-TActiveSOT,;4 pin;8 mm²-40°C to +85°CNo
MAX6335US20D3No Longer AvailableMAX6335US20D3+SOT,;4 pin;8 mm²-40°C to +85°CNo
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX6335US20D3+ActiveSOT,;4 pin;8 mm²-40°C to +85°CLead Free
MAX6335US20D3+TActiveSOT,;4 pin;8 mm²-40°C to +85°CLead Free
MAX6335US20D3-TNo Longer AvailableMAX6335US20D3+TSOT,;4 pin;8 mm²-40°C to +85°CNo
MAX6335US21D1+TActiveSOT;-40°C to +85°CSee data sheet
MAX6335US21D1-TActiveSOT,;4 pin;8 mm²-40°C to +85°CNo
MAX6335US21D2+TActiveSOT;-40°C to +85°CSee data sheet
MAX6335US21D2-TActiveSOT,;4 pin;8 mm²-40°C to +85°CNo
MAX6335US21D3+TActiveSOT;-40°C to +85°CSee data sheet
MAX6335US21D3-TActiveSOT,;4 pin;8 mm²-40°C to +85°CNo
MAX6335US22D1+TActiveSOT;-40°C to +85°CSee data sheet
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX6335US22D1-TActiveSOT,;4 pin;8 mm²-40°C to +85°CNo
MAX6335US22D2+TActiveSOT;-40°C to +85°CSee data sheet
MAX6335US22D2-TActiveSOT,;4 pin;8 mm²-40°C to +85°CNo
MAX6335US22D3+ActiveSOT,;4 pin;8 mm²-40°C to +85°CLead Free
MAX6335US22D3+TActiveSOT,;4 pin;8 mm²-40°C to +85°CLead Free
MAX6335US22D3-TNo Longer AvailableMAX6335US22D3+TSOT,;4 pin;8 mm²-40°C to +85°CNo
MAX6335US23D1+TActiveSOT;-40°C to +85°CSee data sheet
MAX6335US23D1-TNo Longer AvailableSOT,;4 pin;8 mm²-40°C to +85°CNo
MAX6335US23D2+TActiveSOT;-40°C to +85°CSee data sheet
MAX6335US23D2-TActiveSOT,;4 pin;8 mm²-40°C to +85°CNo
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