MAX8211 Maxim, MAX8211 Datasheet
MAX8211
Manufacturer Part Number
MAX8211
Description
Microprocessor Voltage Monitors with Programmable Voltage Detection
Manufacturer
Maxim
Datasheet
1.MAX8211.pdf
(8 pages)
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Maxim’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 sev-
eral performance advantages, including reduced supply
current, a more tightly controlled bandgap reference, and
more available current from the hysteresis output.
________________________Applications
___________________Pin Configuration
19-0539; Rev 3; 1/95
________________General Description
Call toll free 1-800-998-8800 for free samples or literature.
Pin Configurations continued at end of data sheet.
TOP VIEW
µP Voltage Monitoring
Undervoltage Detection
Overvoltage Detection
Battery-Backup Switching
Power-Supply Fault Monitoring
Low-Battery Detection
THRESH
HYST
N.C.
OUT
4
1
2
3
________________________________________________________________ Maxim Integrated Products
with Programmable Voltage Detection
MAX8211
MAX8212
DIP/SO
Microprocessor Voltage Monitors
8
5
7
6
N.C.
GND
N.C.
V+
____________________________Features
___________Typical Operating Circuit
_______________Ordering Information
Ordering Information continued on last page.
* Contact factory for dice specifications.
MAX8211CPA
MAX8211CSA
MAX8211CUA
MAX8211CTY
MAX8211EPA
MAX8211ESA
MAX8211EJA
MAX8211ETY
MAX8211MJA
MAX8211MTV
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)
PART
LOGIC-SUPPLY UNDERVOLTAGE DETECTOR
R3
R2
R1
(Detailed Circuit Diagram–Figure 5)
HYST
THRESH
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
-55°C to +125°C
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
MAX8211
V+
V+
GND
OUT
8 Plastic DIP
8 SO
8 µMAX
8 TO-99
8 Plastic DIP
8 SO
8 CERDIP
8 TO-99
8 CERDIP
8 TO-99
PIN-PACKAGE
NMI
P
1