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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รายละเอียดสินค้า / Description ราคา / Price 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 Stock No. 663-0161
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CD74HC221M
THB24.838
Each: (In a Pack of 5)
Units
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 Stock No. 103-8390
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.HEF4047BT,652
Brand :Nexperia
THB11.656
Each (In a Tube of 57)
Units
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 Stock No. 171-3459
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.74VHC221AFT
Brand :Toshiba
THB8.291
Each: (In a Pack of 50)
Units
74VHC Monostable Multivibrator 27 -8mA 8mA 5 ns 24.5ns 80µA Surface Mount TSSOP 16 5 x 4.4 x 1mm 1mm 5mm
RS Stock No. 162-6980
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CD74HCT423M96
THB8.252
Each (On a Reel of 2500)
Units
HCT Monostable Multivibrator 2 -4mA 4mA 20 ns 68 ns @ 4.5 V 0.008mA Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 1.58mm 9.9mm
RS Stock No. 170-8064
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.74HCT123D,652
Brand :Nexperia
THB11.70
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74HCT Monostable Multivibrator 2 -4mA 4mA 30 ns 77 ns @ 50 pF - Surface Mount SO 16 10 x 4 x 1.45mm 1.45mm 10mm
RS Stock No. 436-3096
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.SN54LS123J
THB507.24
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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 Stock No. 162-6944
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CD74HC221PWR
THB8.16
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HC Monostable Multivibrator 2 -5.2mA 5.2mA 12 ns 210 ns @ 2 V 0.008mA Surface Mount TSSOP 16 5 x 4.4 x 1.15mm 1.15mm 5mm
RS Stock No. 662-8461
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.SN74LV221APWR
THB39.424
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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 Stock No. 921-2808
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.SN74LVC1G123DCTR
THB5.434
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LVC Monostable Multivibrator 1 -32mA 32mA 2.5 ns - 20µA Surface Mount SM 8 3.15 x 2.9 x 1.2mm 1.2mm 3.15mm
RS Stock No. 178-8815
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CD74HC123PWR
THB12.089
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Units
HC Monostable Multivibrator 2 -5.2mA 5.2mA 17 ns 320 ns @ 2 V 0.008mA Surface Mount TSSOP 16 5 x 4.4 x 1.15mm 1.15mm 5mm
RS Stock No. 662-9635
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CD4047BM
THB16.644
Each: (In a Pack of 5)
Units
4000 Monostable Multivibrator 1 - - 50 ns 1000 ns @ 5 V 0.02mA Surface Mount SOIC 14 8.65 x 3.91 x 1.58mm 1.58mm 8.65mm
RS Stock No. 145-1086
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CD74HC123E
THB14.307
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Units
HC Monostable Multivibrator 2 -5.2mA 5.2mA 17 ns 320 ns @ 2 V 0.008mA Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm
RS Stock No. 807-2343
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CD14538BM
THB12.949
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Units
4000 Monostable Multivibrator 2 -4.2mA 4.2mA 140 ns 600 ns@ 50 pF 3000µA Surface Mount SOIC 16 10 x 4 x 1.5mm 1.5mm 10mm
RS Stock No. 601-4128
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.TC4538BF(F)
Brand :Toshiba
THB68.34
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Units
4000 Monostable Multivibrator 2 - - 25 ns 760 ns @ 5 V 20mA Surface Mount SOP 16 10.3 x 5.3 x 1.5mm 1.5mm 10.3mm
RS Stock No. 186-9259
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.74VHC123AM
THB15.79
Each: (In a Pack of 25)
Units
VHC Monostable Multivibrator 8 -8mA 8mA 5 ns 29.5 ns @ 50 pF 40µA Surface Mount SOIC 16 10 x 4 x 1.5mm 1.5mm 10mm
RS Stock No. 833-759
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CD74HCT221M
THB21.45
Each
Units
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 Stock No. 146-0416
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.74HCT123PW,112
Brand :Nexperia
THB17.01
Each (In a Tube of 96)
Units
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 Stock No. 368-6001
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.SN74LS123N
THB19.95
Each (In a Tube of 25)
Units
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 Stock No. 806-3302
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.MC14538BDTR2G
THB15.523
Each (On a Tape of 20)
Units
MC Monostable Multivibrator 2 -0.36mA 2.4mA 10 μs 600 ns@ 50 pF - Surface Mount TSSOP 16 5.1 x 4.5 x 1.05mm 1.05mm 5.1mm
RS Stock No. 540-7692
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.TC74HC123AF(F)
Brand :Toshiba
THB13.642
Each: (In a Pack of 5)
Units
HC Monostable Multivibrator 2 -5.2mA 5.2mA 13 ns 210 ns @ 2 V 0.004mA Surface Mount SOP 16 10.3 x 5.3 x 1.5mm 1.5mm 10.3mm
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