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. 165-9121
Mfr. Part No.MAX1232CSA+
£1.853
Each (In a Tube of 100)
Units
1 Active Low, Open Drain Yes - - - Surface Mount SOIC 8 Yes - 1000ms 5 x 4 x 1.5mm 1.5mm
RS Stock No. 540-4536
Mfr. Part No.MAX1232CSA+
£2.96
Each
Units
1 Active High, Active Low, Open Drain Yes - - - Surface Mount SOIC 8 Yes - 1000ms 5 x 4 x 1.5mm 1.5mm
RS Stock No. 177-6868
Mfr. Part No.MAX1232CSA+T
£1.36
Each (On a Reel of 2500)
Units
1 Active Low, Open Drain Yes - - - Surface Mount SOIC 8 Yes - 1000ms 5 x 4 x 1.5mm 1.5mm
RS Stock No. 761-3767
Mfr. Part No.MAX1232CSA+T
£2.49
Each
Units
1 Active Low, Open Drain Yes - - - Surface Mount SOIC 8 Yes - 1000ms 5 x 4 x 1.5mm 1.5mm
RS Stock No. 732-7478
Mfr. Part No.DS1818R-10+T&R
£1.872
Each (In a Pack of 5)
Units
1 Active Low, Open Drain - Yes - - Surface Mount SOT-23 3 Yes - 250ms 3.04 x 1.4 x 1.02mm 1.02mm
RS Stock No. 103-9575
Mfr. Part No.DS1818R-10+T&R
£0.894
Each (On a Reel of 3000)
Units
1 Active Low, Open Drain - Yes - - Surface Mount SOT-23 3 Yes - 250ms 3.04 x 1.4 x 1.02mm 1.02mm
RS Stock No. 165-8927
Mfr. Part No.DS1811R-10+T&R
£0.894
Each (On a Reel of 3000)
Units
1 Active Low, Open Drain - Yes - - Surface Mount SOT-23 3 - - 300ms 2.92 x 1.3 x 0.94mm 0.94mm
RS Stock No. 138-758
Mfr. Part No.DS1811R-10+T&R
£1.69
Each
Units
1 Active Low, Open Drain - Yes - - Surface Mount SOT-23 3 - - 300ms 2.92 x 1.3 x 0.94mm 0.94mm
RS Stock No. 732-6832
Mfr. Part No.MAX6749KA+T
£2.88
Each
Units
1 Active Low, Open Drain Yes - - Adjustable Surface Mount SOT-23 8 - - 9.487ms 3 x 1.75 x 1.3mm 1.3mm
RS Stock No. 923-5615
Mfr. Part No.MAX6749KA+T
£1.579
Each (On a Reel of 2500)
Units
1 Active Low, Open Drain Yes - - Adjustable Surface Mount SOT-23 8 - - 9.487ms 3 x 1.75 x 1.3mm 1.3mm
RS Stock No. 189-1871
Mfr. Part No.STM1818SWX7F
£0.196
Each (On a Reel of 3000)
Units
1 Active Low, Open Drain - - - - Surface Mount SOT-23 3 Yes - 200ms 3.04 x 1.4 x 1.02mm 1.02mm
RS Stock No. 540-2489
Mfr. Part No.MAX1232CPA+
£1.871
Each (In a Tube of 50)
Units
1 Active High, Active Low, Open Drain Yes - - - Through Hole PDIP 8 Yes - 1000ms 9.91 x 7.87 x 4.45mm 4.45mm
RS Stock No. 189-1932
Mfr. Part No.STM1818SWX7F
£0.449
Each (In a Pack of 25)
Units
1 Active Low, Open Drain - - - - Surface Mount SOT-23 3 Yes - 200ms 3.04 x 1.4 x 1.02mm 1.02mm
RS Stock No. 165-3587
Mfr. Part No.TC54VN3002ECB713
BrandMicrochip
£0.279
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. 768-1520
Mfr. Part No.TC54VN3002ECB713
BrandMicrochip
£0.372
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. 146-0988
Mfr. Part No.MAX690ACPA+
£4.227
Each (In a Tube of 50)
Units
1 Active Low, Push-Pull Yes Yes - - Through Hole PDIP 8 - Yes 280ms 9.91 x 7.87 x 4.45mm 4.45mm
RS Stock No. 540-2322
Mfr. Part No.MAX690ACPA+
£5.90
Each
Units
1 Active Low, Push-Pull Yes Yes - - Through Hole PDIP 8 - Yes 280ms 9.91 x 7.87 x 4.45mm 4.45mm
RS Stock No. 622-8383
Mfr. Part No.MAX1232ESA+
£3.73
Each
Units
1 - Yes - - - Surface Mount SOIC 8 Yes - - 5 x 4 x 1.5mm 1.5mm
RS Stock No. 169-8321
Mfr. Part No.MAX1232ESA+
£2.383
Each (In a Tube of 100)
Units
1 - Yes - - - Surface Mount SOIC 8 Yes - - 5 x 4 x 1.5mm 1.5mm
RS Stock No. 923-7456
Mfr. Part No.MAX1232ESA+T
£1.36
Each (On a Reel of 2500)
Units
1 Active Low, Open Drain Yes - - - Surface Mount SOIC 8 Yes - 1000ms 5 x 4 x 1.5mm 1.5mm
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