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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Description 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庫存編號 526-701
製造零件編號CD74HC123M
HK$3.036
毎管:40 個
單位
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庫存編號 663-0014
製造零件編號CD74HC123M
HK$4.54
/個 (每包:5個)
單位
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庫存編號 662-7005
製造零件編號CD74HC123M96
HK$3.02
/個 (每包:10個)
單位
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庫存編號 436-3096
製造零件編號SN54LS123J
HK$105.83
單位
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庫存編號 527-467
製造零件編號CD14538BE
HK$3.053
毎管:25 個
單位
4000 Monostable Multivibrator 2 - - 30 ns 600 ns @ 5 V 0.1mA Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm
RS庫存編號 168-5124
製造零件編號SN54LS123J
HK$90.418
毎管:9 個
單位
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庫存編號 662-8364
製造零件編號SN74LS123DR
HK$5.106
/個 (每包:5個)
單位
LS Monostable Multivibrator 2 -0.4mA 8mA 40 ns 56 ns @ 5 V 12mA Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 1.58mm 9.9mm
RS庫存編號 145-1068
製造零件編號SN74AHC123AD
HK$2.883
毎管:40 個
單位
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庫存編號 170-8064
製造零件編號74HCT123D,652
BrandNexperia
HK$2.018
毎管:50 個
單位
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庫存編號 169-5736
製造零件編號SN74LS123D
HK$4.116
毎管:40 個
單位
LS Monostable Multivibrator 2 -0.4mA 8mA 40 ns 56 ns @ 5 V 12mA Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 1.58mm 9.9mm
RS庫存編號 742-3974
製造零件編號74HCT123D,653
BrandNexperia
HK$2.33
/個 (每包:20個)
單位
74HCT Monostable Multivibrator 2 -4mA 4mA 30 ns 77ns - Surface Mount SOIC 16 10 x 4 x 1.45mm 1.45mm 10mm
RS庫存編號 527-293
製造零件編號CD4098BE
HK$3.738
毎管:25 個
單位
4000 Monostable Multivibrator 2 - - 20 ns 500 ns @ 5 V 0.02mA Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm
RS庫存編號 663-1120
製造零件編號SN74AHC123AD
HK$2.758
/個 (每包:10個)
單位
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庫存編號 663-2394
製造零件編號SN74LS123D
HK$6.528
/個 (每包:5個)
單位
LS Monostable Multivibrator 2 -0.4mA 8mA 40 ns 56 ns @ 5 V 12mA Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 1.58mm 9.9mm
RS庫存編號 922-2833
製造零件編號SN74LS123DR
HK$3.243
個 (在毎卷:2500)
單位
LS Monostable Multivibrator 2 -0.4mA 8mA 40 ns 56 ns @ 5 V 12mA Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 1.58mm 9.9mm
RS庫存編號 170-5405
製造零件編號74LVC1G123DP,125
BrandNexperia
HK$3.93
/個 (每包:25個)
單位
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庫存編號 151-3351
製造零件編號74HC4538PW,118
BrandNexperia
HK$1.62
個 (在毎卷:2500)
單位
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庫存編號 483-6588
製造零件編號74HC423D,652
BrandNexperia
HK$7.972
/個 (每包:5個)
單位
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
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RS庫存編號 178-4724
製造零件編號MC14528BDG
HK$3.635
毎管:48 個
單位
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RS庫存編號 833-759
製造零件編號CD74HCT221M
HK$14.12
單位
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