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MFG:FUJITSU  Package Cooled:DIP  

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Part Number: MB3771

 

MFG: FUJITSU

Package Cooled: DIP

 

Description: The Fujitsu MB3771 is designed to monitor the voltage level of one or two power supplies (+5 V and an ...


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MB3771 General Description


The Fujitsu MB3771 is designed to monitor the voltage level of one or two power supplies (+5 V and an arbitrary voltage) in a microprocessor circuit, memory board in large-size computer, for example.

If the circuit's power supply deviates more than a specified amount, then the MB3771 generates a reset signal to the microprocessor. Thus, the computer data is protected from accidental erasure.

Using the MB3771 requires few external components. To monitor only a +5 V supply, the MB3771 requires the connection of one external capacitor. The level of an arbitrary detection voltage is determined by two external resistors. The MB3771 is available in an 8-pin Dual In-Line, Single In-Line Package or space saving Flat Package.

MB3771 Maximum Ratings

Parameter Symbol Rating Unit
Min. Max.
Power supply voltage VCC 0.3 +20 V
Input voltage VSA 0.3 VCC + 0.3 ( < +20) V
VSB 0.3 +20 V
VSC -0.3 +20 V
Power dissipation PD - 200 (Ta85 °C) mW
Storage temperature Tstg 55 +125 °C
WARNING: Semiconductor devices can be permanently damaged by application of stress (voltage, current,
                  temperature, etc.) in excess of absolute maximum ratings. Do not exceed these ratings.

MB3771 Features

• Precision voltage detection (VSA = 4.2 V ± 2.5 %)
• User selectable threshold level with hysterisis (VSB = 1.23 V ± 1.5 %)
• Monitors the voltage of one or two power supplies (5 V and an arbitrary voltage, >1.23 V)
• Usable as over voltage detector
• Low voltage output for reset signal (VCC = 0.8 V typ.)
• Minimal number of external components (one capacitor min.)
• Low power dissipation (ICC = 0.35 mA typ., VCC = 5 V)
• Detection threshold voltage has hyst

MB3771 Connection Diagram

MB3771 Connection Diagram

MB3771 datasheet

MB3771
PDF/DataSheet Download

  • Datasheet: MB3771
  • File Size: 188235 KB
  • Manufacturer: FUJITSU [Fujitsu Media Devices Limited]
  • Click here to Download

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