MAX6577:SOT Temperature Sensors with Period/Frequency Output

SOT23 Single Wire Digital Temperature Sensors

The MAX6576/MAX6577 are low-cost, low-current temperature sensors with a single-wire output. The MAX6576 converts the ambient temperature into a square wave with a period proportional to absolute temperature (°K). The MAX6577 converts the ambient temperature into a square wave with a frequency proportional to absolute temperature. The MAX6576 offers accuracy of ±3°C at +25°C, ±4.5°C at +85°C, and ±5°C at +125°C. The MAX6577 offers accuracy of ±3°C at +25°C, ±3.5°C at +85°C, and ±4.5°C at +125°C. Both devices feature a single-wire output that minimizes the number of pins necessary to interface with a microprocessor. The period/frequency range of the output square wave can be selected by hard-wiring the two time-select pins (TS0, TS1) to either VDD or GND. The MAX6576/MAX6577 are available in space-saving 6-pin SOT23 packages.

Key Features
  • Simple Single-Wire Output
  • Two Output Types Available
    • Temperature to Period (µs) (MAX6576)
    • Temperature to Frequency (Hz) (MAX6577)
  • ±0.8°C Accuracy at +25°C (±3°C max)
  • No External Components
  • Operates from +2.7V to +5.5V Supply Voltage
  • Low 140µA Typical Supply Current
  • Standard Operating Temperature Range: -40°C to +125°C
  • Small 6-Pin SOT23 Package
MAX6576, MAX6577: Typical Operating Circuit
MAX6576, MAX6577: Typical Operating Circuit
Applications/Uses
  • Battery Packs
  • Cell Phones
  • Critical µP and µC Temperature Monitoring
  • Hard Drives/Tape Drives
  • Medical Equipment
  • Networking and Telecom Equipment
  • Portable Battery-Powered Equipment
DataSheet
titleDownload file
MAX6576-MAX6577 Data SheetMAX6576-MAX6577.pdf
Parametrics
Part NumberSensor TypeInterfaceChannelsAccuracy
(±°C)
Parasite Pwr.Oper. Temp.
(°C)
Package/PinsBudgetary
Price
See Notes
MAX6576LocalPeriod µ Temp.One3No-55 to +125SOT/6$1.04 @1k
MAX6577Freq. µ Temp.SOT/6$0.87 @1k
Quality and Environmental Data
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX6577ZUT+ActiveSOT,;6 pin;9 mm²-40°C to +85°CLead Free
MAX6577ZUT+TActiveSOT,;6 pin;9 mm²-40°C to +85°CLead Free
MAX6577ZUT-TNo Longer AvailableMAX6577ZUT+TSOT,;6 pin;9 mm²-40°C to +85°CNo
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