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Microprocessor Voltage Monitors with Programmable Voltage Detection

Product Details

Key Features

Parametric specs for Supervisors (1 Monitored Voltage)
Reset Thresh. (V) 1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
Reset Thresh. Accur. (%) (@ +25°C) 3
Reset Out Active Low
Open Drain
tRESET (min) <1ms
Watchdog Feature No Watchdog
Supervisor Features High Voltage (>6V)
ICC (µA) (max) 15
Package/Pins CDIP/8
METAL CAN/8
PDIP/8
SOIC (N)/8
Budgetary
Price (See Notes)
2.18
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Simplified Block Diagram

Technical Docs

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Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.

Parameters

Parametric specs for Supervisors (1 Monitored Voltage)
Reset Thresh. (V) 1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
Reset Thresh. Accur. (%) (@ +25°C) 3
Reset Out Active Low
Open Drain
tRESET (min) <1ms
Watchdog Feature No Watchdog
Supervisor Features High Voltage (>6V)
ICC (µA) (max) 15
Package/Pins CDIP/8
METAL CAN/8
PDIP/8
SOIC (N)/8
Budgetary
Price (See Notes)
2.18

Key Features

  • µP Power-Fail Warning
  • Improved 2nd Source for ICL8211/ICL8212
  • Low-Power CMOS Design
  • 5µA Quiescent Current
  • On-Board Hysteresis Output
  • ±40mV Threshold Accuracy (±3.5%)
  • 2.0V to 16.5V Supply-Voltage Range
  • Define Output Current Limit (MAX8211)
  • High Output Current Capability (MAX8212)

Applications/Uses

  • µP Voltage Monitoring
  • Battery-Backup Switching
  • Low-Battery Detection
  • Overvoltage Detection
  • Power-Supply Fault Monitoring
  • Undervoltage Detection

Description

Maxim's MAX8211 and MAX8212 are CMOS micropower voltage detectors that warn microprocessors (µPs) of power failures. Each contains a comparator, a 1.15V bandgap reference, and an open-drain n-channel output driver. Two external resistors are used in conjunction with the internal reference to set the trip voltage to the desired level. A hysteresis output is also included, allowing the user to apply positive feedback for noise-free output switching.

The MAX8211 provides a 7mA current-limited output sink whenever the voltage applied to the threshold pin is less than the 1.15V internal reference. In the MAX8212, a voltage greater than 1.15V at the threshold pin turns the output stage on (no current limit).

The CMOS MAX8211/MAX8212 are plug-in replacements for the bipolar ICL8211/ICL8212 in applications where the maximum supply voltage is less than 16.5V. They offer several performance advantages, including reduced supply current, a more tightly controlled bandgap reference, and more available current from the hysteresis output.

Simplified Block Diagram

MAX8211, MAX8212: Typical Operating Circuit MAX8211, MAX8212: Typical Operating Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.