MAX7501 Datasheet

• Timeout Prevents Bus Lockup (MAX7501)
• 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
• ±1.5°C (max) Temperature Accuracy (-25°C to +100°C, 3-σ)
• µMAX, SO Packages Save Space
• Separate Open-Drain OS Output Operates as Interrupt or Comparator/Thermostat Input
• Register Readback Capability
• Improved LM75 Second Source

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

The MAX7501 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 MAX7501 integrate a timeout feature that offers protection against I²C bus lockups.

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 MAX7501 feature two address select lines and an active-low RESET input. The MAX7501s' 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 MAX7501 are available in 8-pin µMAX® and SO packages and operate over the -55°C to +125°C temperature range.