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MAX7500, MAX7501, MAX7502, MAX7503, MAX7504
Digital Temperature Sensors and Thermal Watchdog with Bus Lockup Protection

Digital Temperature Sensors and Thermal Watchdog with Bus-Lockup Protection and Manual Reset


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Description
FULL DATA SHEET (PDF, 676kB)
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The MAX7500–MAX7504 temperature sensors accurately measure temperature and provide an overtemperature alarm/interrupt/shutdown output. These devices convert the temperature measurements to digital form using a high-resolution, sigma-delta, analog-to-digital converter (ADC). Communication is through an I²C-compatible 2-wire serial interface. The MAX7500/MAX7501/MAX7502 integrate a timeout feature that offers protection against I²C bus lockups. The MAX7503/MAX7504 do not include the timeout feature.

The 2-wire serial interface accepts standard write byte, read byte, send byte, and receive byte commands to read the temperature data and configure the behavior of the open-drain overtemperature shutdown output.

The MAX7500 features three address select lines, while the MAX7501–MAX7504 feature two address select lines and a RESET-bar input. The MAX7500/MAX7501/MAX7502s' 3.0V to 5.5V supply voltage range, low 250µA supply current, and a lockup-protected I²C-compatible interface make them ideal for a wide range of applications, including personal computers (PCs), electronic test equipment, and office electronics.

The MAX7500–MAX7504 are available in 8-pin µMAX® and SO packages and operate over the -55°C to +125°C temperature range.

Key Features   Applications/Uses
  • Timeout Prevents Bus Lockup (MAX7500, MAX7501, MAX7502)
  • Hardware Reset for Added Protection
  • I²C Bus Interface
  • 3.0V to 5.5V Supply Voltage Range
  • 250µA (typ) Operating Supply Current
  • 3µA (typ) Shutdown Supply Current
  • ±2°C (max) from -25°C to +100°C Temperature Accuracy
  • µMAX, SO Packages Save Space
  • Separate Open-Drain OS Output Operates as Interrupt or Comparator/Thermostat Input
  • Register Readback Capability
  • Improved LM75 Second Source
  • UL Certified

     
  • Electronic Test Equipment
  • Industrial Process Control
  • Office Electronics
  • PCs
  • Servers

    Key Specifications:   Temperature Sensors
    Part Number Sensor Type Alarm Output Functions Interface Accuracy (±°C) Parasite Power Temperature Threshold Temperature Resolution (Bits) Features RoHS Available Package Smallest Available Package (max w/pins) (mm2) Price**
    MAX7500  Local  -   -  2-Wire/SMBus 2 No Programmable  -   -  Yes SOIC/8
    uMAX/8
    16 $0.65 @ 1k
    MAX7501  Overt
    Standalone Thermostat
    No Programmable 11
    SMBus Time-Out Prevents SMBus Lockup
    $0.65 @ 1k
    MAX7502  Overt
    Standalone Thermostat
    No Programmable 11
    SMBus Time-Out Prevents SMBus Lockup
    $0.65 @ 1k
    MAX7503  Overt
    Standalone Thermostat
    No Programmable 11  -  $0.65 @ 1k
    MAX7504  Overt
    Single Temperature Alarm
     -   -   -   -  $0.65 @ 1k
    See All Temperature Sensors (97)
    Notes:
    **This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

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    Document Ref.: 19-3382; Rev 2; 2005-08-23
    This page last modified: 2008-03-13



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