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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Omschrijving Prijs 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-stocknr. 153-1982
Fabrikantnummer74HC123PW-Q100,118
FabrikantNexperia
€ 0,133
Each (On a Reel of 2500)
Aantal stuks
74HC Monostable Multivibrator 2 -5.2mA 5.2mA 26 ns 385 ns @ 50 pF - Surface Mount TSSOP 16 5.1 x 4.5 x 0.95mm 0.95mm 5.1mm
RS-stocknr. 178-9183
FabrikantnummerCD74HC423M
€ 0,655
Each (In a Tube of 40)
Aantal stuks
HC Monostable Multivibrator 2 -5.2mA 5.2mA 17 ns 320 ns @ 2 V 0.008mA Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 1.58mm 9.9mm
RS-stocknr. 103-8390
FabrikantnummerHEF4047BT,652
FabrikantNexperia
€ 0,378
Each (In a Tube of 57)
Aantal stuks
4000 Monostable Multivibrator 1 - - 70 ns 320 ns @ 5 V 0.08mA Surface Mount SOIC 14 8.75 x 4 x 1.45mm 1.45mm 8.75mm
RS-stocknr. 528-078
FabrikantnummerCD74HC4538M96
€ 0,482
Each (In a Pack of 25)
Aantal stuks
HC Monostable Multivibrator 2 -5.2mA 5.2mA 14 ns 250 ns @ 2 V 0.008mA Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 1.58mm 9.9mm
RS-stocknr. 184-4260
FabrikantnummerMC14538BDWG
FabrikantON Semiconductor
€ 0,55
Each (In a Tube of 47)
Aantal stuks
4000 Monostable Multivibrator 2 -4.2 (Minimum)mA 4.2 (Minimum)mA 5 ns 600 ns @ 50 pF 600µA Surface Mount SOIC 16 10.45 x 7.6 x 2.4mm 2.4mm 10.45mm
RS-stocknr. 146-0416
Fabrikantnummer74HCT123PW,112
FabrikantNexperia
€ 0,178
Each (In a Tube of 96)
Aantal stuks
HCT Monostable Multivibrator 1 -4mA 4mA 150 ns 385 ns @ 50 pF - Surface Mount TSSOP 16 5.1 x 4.5 x 0.95mm 0.95mm 5.1mm
RS-stocknr. 663-0161
FabrikantnummerCD74HC221M
€ 0,676
Each (In a Pack of 5)
Aantal stuks
HC Monostable Multivibrator 2 -5.2mA 5.2mA 12 ns 210 ns @ 2 V 0.008mA Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 1.58mm 9.9mm
RS-stocknr. 170-5405
Fabrikantnummer74LVC1G123DP,125
FabrikantNexperia
€ 0,453
Each (In a Pack of 25)
Aantal stuks
74LVC Monostable Multivibrator 1 -32mA 32mA 2.5 ns 20.3 ns @ 50 pF 20µA Surface Mount TSSOP 8 3.1 x 3.1 x 0.95mm 0.95mm 3.1mm
RS-stocknr. 662-7291
FabrikantnummerCD74HCT221M96
€ 0,604
Each (In a Pack of 5)
Aantal stuks
HCT Monostable Multivibrator 2 -4mA 4mA 14 ns 42 ns @ 4.5 V 0.008mA Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 1.58mm 9.9mm
RS-stocknr. 144-9936
FabrikantnummerCD4047BE
€ 0,218
Each (In a Tube of 25)
Aantal stuks
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-stocknr. 145-1068
FabrikantnummerSN74AHC123AD
€ 0,399
Each (In a Tube of 40)
Aantal stuks
AHC Monostable Multivibrator 2 -8mA 8mA 5 ns 24.1 ns @ 3.3 V 0.004mA Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 1.58mm 9.9mm
RS-stocknr. 663-2460
FabrikantnummerSN74LS221D
€ 1,232
Each (In a Pack of 5)
Aantal stuks
LS Monostable Multivibrator 2 -0.4mA 8mA 40 ns 80 ns @ 5 V 4.7mA Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 1.58mm 9.9mm
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