Monostable Multivibrators

Monostable multivibrators, also known as one-shot multivibrators, are a type of electronic circuit that can be used as a timer. They have one stable and one unstable state. The unstable state is caused by a trigger pulse. This state is transient, so the circuit always returns to stability after a fixed time has elapsed. 


Generally, monostable multivibrator circuits are composed of two transistors, coupled with one resistor-capacitor network and one resistor network. These networks are what determines the length of time before the circuit returns to its stable state, after being triggered. 


What are monostable multivibrators used for?

Monostable multivibrators are used to produce a specific timed delay within a circuit. Therefore, they can broadly be used as timers or as pulse detectors in electronic equipment. 


Types of monostable multivibrators

There are two types of monostable multivibrators:

  • Retriggerable monostable multivibrators will remain in the unstable state with repeated application of the trigger pulse.
  • Non-retriggerable monostable multivibrators are unaffected by further trigger pulses, and will remain in the unstable state only for the predetermined period of time. 

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Beskrivning Pris Logic Family Logic Function Number of Elements per Chip Maximum High Level Output Current Maximum Low Level Output Current Minimum Pulse Width Maximum Propagation Delay Time @ Maximum CL Maximum Quiescent Current Mounting Type Package Type Pin Count Dimensions Height Length
RS-artikelnummer 368-5654
Tillv. art.nrSN74121N
VarumärkeTexas Instruments
29,97 kr
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74 Monostable Multivibrator 1 -0.4mA 16mA 50 ns 80 ns @ 5 V 13mA Through Hole PDIP 14 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm
RS-artikelnummer 305-591
Tillv. art.nrSN74121N
VarumärkeTexas Instruments
35,36 kr
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74 Monostable Multivibrator 1 -0.4mA 16mA 50 ns 80 ns @ 5 V 13mA Through Hole PDIP 14 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm
RS-artikelnummer 303-927
Tillv. art.nrSN74221N
VarumärkeTexas Instruments
48,91 kr
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74 Monostable Multivibrator 2 -0.8mA 16mA 20 ns 80 ns @ 5 V 26mA Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm
RS-artikelnummer 125-0045
Tillv. art.nrMC74HC4538ADG
VarumärkeON Semiconductor
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HC Monostable Multivibrator 2 -5.2mA 5.2mA 10 ns 295 ns @ 50 pF 0.35mA Surface Mount SOIC 16 10 x 4 x 1.5mm 1.5mm 10mm
RS-artikelnummer 186-9164
Tillv. art.nrMC100EL32DG
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50,77 kr
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ECL Divider 2 - - - - - Surface Mount SOIC 8 5 x 4 x 1.5mm 1.5mm 5mm
RS-artikelnummer 151-3419
Tillv. art.nr74HC4538PW,118
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HC Monostable Multivibrator 2 -5.2mA 5.2mA 20 ns 400 ns @ 15 pF - Surface Mount TSSOP16 16 5.1 x 4.5 x 0.95mm 0.95mm 5.1mm
RS-artikelnummer 162-6981
Tillv. art.nrCD74HCT4538M96
VarumärkeTexas Instruments
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HCT Monostable Multivibrator 2 -4mA 4mA 16 ns 55 ns @ 4.5 V 0.008mA Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 1.58mm 9.9mm
RS-artikelnummer 709-3071
Tillv. art.nrCD74HC221EE4
VarumärkeTexas Instruments
6,41 kr
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HC Monostable Multivibrator 2 -5.2mA 5.2mA 12 ns 210 ns @ 2 V 0.008mA Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm
RS-artikelnummer 662-8461
Tillv. art.nrSN74LV221APWR
VarumärkeTexas Instruments
4,708 kr
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LV Monostable Multivibrator 2 -12mA 12mA 5 ns 36 ns @ 2.5 V 0.02mA Surface Mount TSSOP 16 5 x 4.4 x 1.15mm 1.15mm 5mm
RS-artikelnummer 144-9936
Tillv. art.nrCD4047BE
VarumärkeTexas Instruments
3,822 kr
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4000 Monostable Multivibrator 1 - - 50 ns 1000 ns @ 5 V 0.02mA Through Hole PDIP 14 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm
RS-artikelnummer 307-632
Tillv. art.nrSN74LS123N
VarumärkeTexas Instruments
8,27 kr
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LS Monostable Multivibrator 2 -0.4mA 8mA 40 ns 56 ns @ 5 V 12mA Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm
RS-artikelnummer 113-0635
Tillv. art.nr74HC4538D,652
VarumärkeNexperia
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HC Monostable Multivibrator 2 -5.2mA 5.2mA 14 ns 265 ns@ 2 V 0.008mA Surface Mount SOIC 16 10 x 4 x 1.45mm 1.45mm 10mm
RS-artikelnummer 368-5660
Tillv. art.nrSN74123N
VarumärkeTexas Instruments
39,032 kr
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74 Monostable Multivibrator 2 -0.8mA 16mA 40 ns 40 ns @ 5 V 46mA Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm
RS-artikelnummer 663-2678
Tillv. art.nrSN74LV123APW
VarumärkeTexas Instruments
5,376 kr
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LV Monostable Multivibrator 2 -12mA 12mA 5 ns 36 ns @ 2.5 V 0.02mA Surface Mount TSSOP 16 5 x 4.4 x 1.15mm 1.15mm 5mm
RS-artikelnummer 483-6588
Tillv. art.nr74HC423D,652
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5,418 kr
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HC Monostable Multivibrator 2 -5.2mA 5.2mA 17 ns 255 ns@ 2 V 0.008mA Surface Mount SOIC 16 10 x 4 x 1.45mm 1.45mm 10mm
RS-artikelnummer 145-0153
Tillv. art.nrCD74HC4538E
VarumärkeTexas Instruments
5,149 kr
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HC Monostable Multivibrator 2 -5.2mA 5.2mA 14 ns 250 ns @ 2 V 0.008mA Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm
RS-artikelnummer 436-3096
Tillv. art.nrSN54LS123J
VarumärkeTexas Instruments
111,98 kr
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LS Monostable Multivibrator 2 -0.4mA 4mA 40 ns 56 ns @ 5 V 12mA Through Hole CDIP 16 19.56 x 6.92 x 4.57mm 4.57mm 19.56mm
RS-artikelnummer 527-895
Tillv. art.nrCD4047BE
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3,822 kr
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4000 Monostable Multivibrator 1 - - 50 ns 1000 ns @ 5 V 0.02mA Through Hole PDIP 14 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm
RS-artikelnummer 170-3421
Tillv. art.nrMC14538BDR2G
VarumärkeON Semiconductor
1,46 kr
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4000 Monostable Multivibrator 2 - - 80 ns 600 ns @ 5 V 0.7mA Surface Mount SOIC 16 10 x 4 x 1.5mm 1.5mm 10mm
RS-artikelnummer 124-2262
Tillv. art.nr74HC4538D,652
VarumärkeNexperia
4,266 kr
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HC Monostable Multivibrator 2 -5.2mA 5.2mA 14 ns 265 ns @ 2 V 0.008mA Surface Mount SOIC 16 10 x 4 x 1.45mm 1.45mm 10mm
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