Voltage Supervisors

Voltage supervisors are integrated circuits (ICs) that monitor or supervise a voltage within an electronic circuit. They are sometimes referred to as voltage monitors or detectors. Voltage supervisors are found in most electronic applications and are used to prevent system failure and ensure correct system power up.


Voltage supervisors have an output signal which is given if the voltage falls outside of the chose parameters. This signal can be used to enable, disable or reset another device. Supervisors are commonly paired with a microprocessor (MPU) or microcontroller (MCU) device, as they often require a specific voltage range. Voltage supervisors can also be used as a fault detector for a sensor.


Types of Voltage Supervisors:


  • CMOS voltage detector

  • Open drain voltage detector

  • Watchdog timer

  • Window detector

  • Back-up battery supervisor

  • Battery monitoring

Things to consider when choosing a voltage supervisor?


  • Reset voltage

  • Supply voltage

  • Number of channels

  • Package type

What are processor supervisors?


Processor Supervisors monitor voltage for microprocessors and microcontrollers (MCUs). It is essential that processor parameters are monitored by supervisors to ensure that these parameter boundaries are not exceeded. Exceeding some parameters can result in failure or even a dangerous result.


One of the primary things that a processor supervisor will monitor is voltage. For example, a supervisory circuit monitor may monitor voltages with a threshold of 1.6V to 5V. If the CPU’s circuit voltage falls outside of these limits, the supervisor would create an output signal, for example, a reset output.


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รายละเอียดสินค้า / Description ราคา / Price Voltage Supervisor Type Number of Supervisors Watchdog Timer Manual Reset Maximum Reset Threshold Voltage Power Fail Detection Minimum Reset Threshold Voltage Output Driver Maximum Reset Active Time Mounting Type Package Type Pin Count Dimensions Maximum Monitored Voltage
RS Stock No. 121-8484
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.TL7705ACP
THB21.966
Each (In a Tube of 50)
Units
Supply 1 - - 4.6V - 4.5V - - Through Hole PDIP 8 9.81 x 6.35 x 4.57mm 10V
RS Stock No. 159-5032
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.TL7705ACP
THB24.79
Each
Units
Supply 1 - - 4.6V - 4.5V - - Through Hole PDIP 8 9.81 x 6.35 x 4.57mm 10V
RS Stock No. 738-6297
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.MCP1317T-29LE/OT
Brand :Microchip
THB21.476
Each: (In a Pack of 5)
Units
- 1 Yes Yes - - - Active High, Push-Pull 2240ms Surface Mount SOT-23 5 3.1 x 1.8 x 1.3mm 2.97V
RS Stock No. 165-3363
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.MCP1317T-29LE/OT
Brand :Microchip
THB21.023
Each (On a Reel of 3000)
Units
- 1 Yes Yes - - - Active High, Push-Pull 2240ms Surface Mount SOT-23 5 3.1 x 1.8 x 1.3mm 2.97V
RS Stock No. 884-2669
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.LTC2918IMS-B1#PBF
THB103.98
Each: (In a Pack of 5)
Units
Voltage Monitor 1 Yes Yes 1.71V - 1.656V - - Surface Mount MSOP 10 3 x 3 x 0.86mm 1.8V
RS Stock No. 662-4848
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.TL7705BIP
THB21.75
Each: (In a Pack of 10)
Units
Supply 1 - - 4.6V - 4.5V - - Through Hole PDIP 8 9.81 x 6.35 x 4.57mm 18V
RS Stock No. 145-1219
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.TL7705BIP
THB21.75
Each (In a Tube of 50)
Units
Supply 1 - - 4.6V - 4.5V - - Through Hole PDIP 8 9.81 x 6.35 x 4.57mm 18V
RS Stock No. 781-4184
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.MAX810MTRG
THB9.833
Each (On a Tape of 20)
Units
Microprocessor Reset Monitor - - - 4.6V - 4.16V - - Surface Mount SOT-23 3 3.04 x 1.4 x 1.01mm 4.9V
RS Stock No. 667-4262
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.TC1232CPA
Brand :Microchip
THB37.888
Each: (In a Pack of 5)
Units
- 1 Yes Yes - Yes - Active High, Active Low, Open Drain, Push-Pull 1000ms Through Hole PDIP 8 10.16 x 6.6 x 4.06mm 4.49 V, 4.74V
RS Stock No. 163-0930
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.MAX810MTRG
THB5.644
Each (On a Reel of 3000)
Units
Microprocessor Reset Monitor - - - 4.6V - 4.16V - - Surface Mount SOT-23 3 3.04 x 1.4 x 1.01mm 4.9V
RS Stock No. 412-866
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.ADM1232ARNZ
THB77.27
Each: (In a Pack of 5)
Units
Microprocessor Voltage Monitor 2 Yes Yes - - - Active High, Active Low, Open Drain, Push-Pull 1000ms Surface Mount SOIC 8 5 x 4 x 1.5mm 4.74V
RS Stock No. 144-9251
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.TC1232CPA
Brand :Microchip
THB40.478
Each (In a Tube of 60)
Units
- 1 Yes Yes - Yes - Active High, Active Low, Open Drain, Push-Pull 1000ms Through Hole PDIP 8 10.16 x 6.6 x 4.06mm 4.49 V, 4.74V
RS Stock No. 412-876
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.ADM707ARZ
THB91.496
Each: (In a Pack of 5)
Units
- 1 - Yes - Yes - Active High, Active Low, Push-Pull 280ms Surface Mount SOIC 8 5 x 4 x 1.5mm 4.75V
RS Stock No. 516-5067
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.MC34064P-5G
THB17.13
Each
Units
- 1 - - - - - - - Through Hole TO-92 3 5.2 x 4.19 x 5.33mm 4.7V
RS Stock No. 165-8316
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.APX823-46W5G-7
Brand :DiodesZetex
THB4.36
Each (On a Reel of 3000)
Units
Microprocessor Reset Monitor 1 Yes Yes - - - Active Low 280ms Surface Mount SOT-25 5 3.1 x 1.7 x 1.3mm 4.72V
RS Stock No. 169-7381
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.APX823-31W5G-7
Brand :DiodesZetex
THB4.36
Each (On a Reel of 3000)
Units
Microprocessor Reset Monitor 1 Yes Yes - - - Active Low 280ms Surface Mount SOT-25 5 3.1 x 1.7 x 1.3mm 3.15V
RS Stock No. 163-0678
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.NCP303LSN18T1G
THB5.53
Each (On a Reel of 3000)
Units
Voltage Detector 1 - - 1.854V - 1.746V - - Surface Mount TSOP 5 3 x 1.5 x 1mm 4.9V
RS Stock No. 906-3316
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.LTC4365ITS8#TRMPBF
THB133.97
Each: (In a Pack of 4)
Units
Overvoltage Monitor, Undervoltage Monitor 3 - - - - - - - Surface Mount TSOT-23 8 2.9 x 1.75 x 0.9mm -
RS Stock No. 751-3143
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.APX823-29W5G-7
Brand :DiodesZetex
THB8.555
Each: (In a Pack of 25)
Units
Power On Reset Circuit 1 Yes Yes 3V - 2.86V - - Surface Mount SOT-25 5 3.1 x 1.7 x 1.3mm 5V
RS Stock No. 163-2471
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.MC34064P-5G
THB8.509
Each (In a Bag of 2000)
Units
- 1 - - - - - - - Through Hole TO-92 3 5.2 x 4.19 x 5.33mm 4.7V