Microprocessor Voltage Monitors with Programmable Voltage Detection
DescriptionMaxim's MAX8211 and MAX8212 are CMOS micropower voltage detectors that warn microprocessors (µPs) of power failures. Each contains a comparator, a 1.5V 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 1.5V internal reference. In the MAX8212, a voltage greater than 1.5V 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.
- 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)
- µP Voltage Monitoring
- Battery-Backup Switching
- Low-Battery Detection
- Overvoltage Detection
- Power-Supply Fault Monitoring
- Undervoltage Detection
|Part Number||Reset Thresh.|
|Reset Out||tRESET||Watchdog Feature||Supervisor Features||Reset Thresh. Accur.|
|min||@ +25°C||max||See Notes|
|<1ms||No Watchdog||High Voltage (>6V)||3||15|
|See All Supervisors (1 Monitored Voltage) (256)|
| Pricing 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 and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
|Device||Fab Process||Technology||Sample size||Rejects||FIT at 25°C||FIT at 55°C|