MAX811SEUS+T by Maxim Integrated | Processor Supervisory | Avnet AMERICAS
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MAX811SEUS+T

Maxim Integrated

Processor Supervisor 2.93V 3V/3.3V/5V 4-Pin(3+Tab) SOT-143 T/R

Manufacturer Part #: MAX811SEUS+T

Alternate Part #: MAX811SEUS+T/BKN


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The MAX811/MAX812 are low-power microprocessor (µP) supervisory circuits used to monitor power supplies in µP and digital systems. They provide excellent circuit reliability and low cost by eliminating external components and adjustments when used with 5V-powered or 3V-powered circuits. The MAX811/MAX812 also provide a debounced manual reset input. These devices perform a single function: They assert a reset signal whenever the VCC supply voltage falls below a preset threshold, keeping it asserted for at least 140ms after VCC has risen above the reset threshold. The only difference between the two devices is that the MAX811 has an active-low RESET output (which is guaranteed to be in the correct state for VCC down to 1V), while the MAX812 has an active-high RESET output. The reset comparator is designed to ignore fast transients on VCC. Reset thresholds are available for operation with a variety of supply voltages. Low supply current makes the MAX811/MAX812 ideal for use in portable equipment. The devices come in a 4-pin SOT143 package.

Key Features

  • Integrated Voltage Monitor Increases System Robustness with Added Manual Reset
    • Precision Monitoring of 3V, 3.3V, and 5V Power-Supply Voltages
    • 140ms Min Power-On-Reset Pulse Width
      • - Active-Low RESET Output (MAX811), RESET Output (MAX812)
    • Guaranteed Over Temperature
    • Guaranteed Active-Low RESET Valid to VCC = 1V (MAX811)
    • Power-Supply Transient Immunity
  • Saves Board Space
    • No External Components
    • 4-Pin SOT143 Package
  • Low Power Consumption Simplifies Power-Supply Requirements
    • 6µA Supply Current

Technical Attributes

Description
Value
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Manual Reset
Yes
Maximum Reset Active Time
560 ms
Chip Enable Signals
No
Maximum Supply Current
2.7 uA
Mounting
Surface Mount
Minimum Operating Supply Voltage
1.2 V
Minimum Reset Threshold Voltage
2.88 V
Screening Level
Extended
Lead Finish
Matte Tin
Operating Temperature
-40 to 85 °C
Monitored Voltage
3|3.3|5 V
Maximum Reset Threshold Voltage
2.98 V
Output Driver
Active Low/Push-Pull
Maximum Power Dissipation
320 mW
Max Processing Temp
260|300

ECCN / UNSPSC

Description
Value
ECCN:
EAR99
SCHEDULE B:
8542390000
HTSN:
8542390001
UNSPSC:
32101600
UNSPSC VERSION:
V15.1101

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