Processor Supervisors

Processor Supervisors are integrated circuits (ICs) which monitor microprocessors and microcontrollers (MCUs). It is essential that particular parameters are monitored by processor 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 CPUs circuit voltage falls outside of these limits, the supervisor would create an output signal, for example, a reset output.

What is the Microprocessor?

CPUs (central processing units) are computer processors which feature multiple functionalities within a single IC. Microprocessors are a type of CPU. They are a central processing unit which often forms the brains of a number of devices, such as computers. These are often crucial components within a circuit and therefore it is important to monitor them.

Types of Processor Supervisors:

  • Battery Monitors
  • Power Supply Monitors
  • Reset Circuit
  • Supervisory Circuit
  • Watchdog timer

Where are they used?

  • Computers
  • Laptops
  • Notebooks
  • Test & measurement instruments
  • Battery-powered devices
  • Power supplies
  • Automotive

...
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Description Price Number of Supervisors Output Driver Watchdog Timer Power Fail Detection Chip Enable Signals Nominal Monitored Voltage Mounting Type Package Type Pin Count Manual Reset Battery Backup Switching Maximum Reset Active Time Dimensions Height
RS Stock No. 761-6084
Mfr. Part No.LM809M3-2.93/NOPB
$1.095
Each (In a Pack of 10)
units
1 Active High, Active Low - - - - Surface Mount SOT-23 3 - - 840ms 3.048 x 1.194 x 0.94mm 0.94mm
RS Stock No. 922-2149
Mfr. Part No.LM809M3-2.93/NOPB
$0.705
Each (On a Reel of 1000)
units
1 Active High, Active Low - - - - Surface Mount SOT-23 3 - - 840ms 3.048 x 1.194 x 0.94mm 0.94mm
RS Stock No. 124-6491
Mfr. Part No.BD87A29FVM-TR
BrandROHM
$4.608
Each (In a Pack of 5)
units
2 Active Low Yes - - 2.9V Surface Mount MSOP 8 - - 10.1ms 2.9 x 2.8 x 0.75mm 0.75mm
RS Stock No. 914-3143
Mfr. Part No.UCD9081RHBT
$11.94
Each
units
8 Active High, Active Low - - - Adjustable Surface Mount VQFN 32 Yes - - 5.15 x 5.15 x 0.95mm 0.95mm
RS Stock No. 162-9923
Mfr. Part No.UCD9081RHBT
$8.492
Each (On a Reel of 250)
units
8 Active High, Active Low - - - Adjustable Surface Mount VQFN 32 Yes - - 5.15 x 5.15 x 0.95mm 0.95mm
RS Stock No. 163-0448
Mfr. Part No.MAX809JTRG
$0.262
Each (On a Reel of 3000)
units
1 Active Low, Push-Pull N N N 4V Surface Mount SOT-23 3 - Yes 460ms 3.04 x 1.4 x 1.01mm 1.01mm
RS Stock No. 806-2481
Mfr. Part No.MAX809SN160T1G
$0.674
Each (In a Pack of 25)
units
1 Active Low, Push-Pull - - - 1.6V Surface Mount SOT-23 3 - Yes 460ms 3.04 x 1.4 x 1.01mm 1.01mm
RS Stock No. 163-0449
Mfr. Part No.MAX809SN160T1G
$0.262
Each (On a Reel of 3000)
units
1 Active Low, Push-Pull - - - 1.6V Surface Mount SOT-23 3 - Yes 460ms 3.04 x 1.4 x 1.01mm 1.01mm
RS Stock No. 165-3589
Mfr. Part No.TC54VN4502ECB713
BrandMicrochip
$0.673
Each (On a Reel of 3000)
units
1 Active Low, Open Drain - - - - Surface Mount SOT-23A 3 - Yes - 3.1 x 1.8 x 1.3mm 1.3mm
RS Stock No. 165-4879
Mfr. Part No.TCM809LENB713
BrandMicrochip
$0.437
Each (On a Reel of 3000)
units
1 Active Low, Push-Pull - - - - Surface Mount SOT-23B 3 - - 560ms 3.05 x 1.4 x 1.02mm 1.02mm
RS Stock No. 628-3633
Mfr. Part No.TCM809LENB713
BrandMicrochip
$0.572
Each (In a Pack of 10)
units
1 Active Low, Push-Pull - - - - Surface Mount SOT-23B 3 - - 560ms 3.05 x 1.4 x 1.02mm 1.02mm
RS Stock No. 768-1533
Mfr. Part No.TC54VN4502ECB713
BrandMicrochip
$0.891
Each (On a Tape of 15)
units
1 Active Low, Open Drain - - - - Surface Mount SOT-23A 3 - Yes - 3.1 x 1.8 x 1.3mm 1.3mm
RS Stock No. 806-2488
Mfr. Part No.MAX809JTRG
$0.674
Each (On a Tape of 25)
units
1 Active Low, Push-Pull N N N 4V Surface Mount SOT-23 3 - Yes 460ms 3.04 x 1.4 x 1.01mm 1.01mm
RS Stock No. 165-3520
Mfr. Part No.MCP130T-485I/TT
BrandMicrochip
$0.572
Each (On a Reel of 3000)
units
1 Open Drain - Yes - - Surface Mount SOT-23 3 - - 10µs 3.04 x 1.4 x 1.02mm 1.02mm
RS Stock No. 165-3521
Mfr. Part No.MCP131T-240E/TT
BrandMicrochip
$0.673
Each (On a Reel of 3000)
units
1 Active Low - Yes - - Surface Mount SOT-23B 3 - - 130ms 3.04 x 1.4 x 1.02mm 1.02mm
RS Stock No. 767-3403
Mfr. Part No.MCP101T-315I/TT
BrandMicrochip
$0.627
Each (In a Pack of 15)
units
1 Push-Pull - Yes - - Surface Mount SOT-23 3 - - 10µs 3.04 x 1.4 x 1.02mm 1.02mm
RS Stock No. 190-5450
Mfr. Part No.DS1232LPS-2+T&R
$6.702
Each (In a Pack of 5)
units
1 Active High, Active Low, Open Drain Yes Yes - 5V Surface Mount SOIC 8 - - 1000ms 5 x 4 x 1.5mm 1.5mm
RS Stock No. 178-5293
Mfr. Part No.MCP100T-300I/TT
BrandMicrochip
$0.471
Each (On a Reel of 3000)
units
1 Active Low, Push-Pull - - - - Surface Mount SOT-23 3 - - - 2.9 x 1.3 x 0.95mm 0.95mm
RS Stock No. 850-7928
Mfr. Part No.ADM823TYRJZ-R7
$2.442
Each (In a Pack of 5)
units
1 Active Low, Push-Pull Yes - - - Surface Mount SOT-23 5 Yes - 280ms 3 x 1.7 x 1.3mm 1.3mm
RS Stock No. 145-7113
Mfr. Part No.TPS3824-50DBVT
$2.233
Each (On a Reel of 250)
units
1 - Yes - - - Surface Mount SOT-23 5 - - - 2.9 x 1.6 x 1.15mm 1.15mm
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