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 923-2350
製造零件編號SN74LS123N
TWD22.70
毎管:25 個
單位
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庫存編號 368-6001
製造零件編號SN74LS123N
TWD22.00
毎管:25 個
單位
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庫存編號 307-632
製造零件編號SN74LS123N
TWD27.00
單位
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庫存編號 527-647
製造零件編號CD74HC4538E
TWD21.40
毎管:25 個
單位
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庫存編號 145-0420
製造零件編號CD4047BM
TWD14.60
毎管:50 個
單位
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庫存編號 662-9635
製造零件編號CD4047BM
TWD16.60
/個 (每包:5個)
單位
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庫存編號 306-471
製造零件編號SN74123N
TWD177.00
單位
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庫存編號 807-2343
製造零件編號CD14538BM
TWD13.80
/個 (每包:40個)
單位
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庫存編號 103-8394
製造零件編號HEF4538BT,652
BrandNexperia
TWD13.10
毎管:50 個
單位
4000 Monostable Multivibrator 2 - - 20 ns 460 ns @ 5 V 0.08mA Surface Mount SOIC 16 10 x 4 x 1.45mm 1.45mm 10mm
RS庫存編號 662-7005
製造零件編號CD74HC123M96
TWD16.50
/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 526-701
製造零件編號CD74HC123M
TWD18.20
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 170-8002
製造零件編號HEF4538BT,653
BrandNexperia
TWD4.50
個 (在毎卷:2500)
單位
HEF Monostable Multivibrator 2 -2.4mA 2.4mA 90 ns 460 ns @ 50 pF - Surface Mount SO 16 10 x 4 x 1.45mm 1.45mm 10mm
RS庫存編號 368-5660
製造零件編號SN74123N
TWD167.10
毎管:25 個
單位
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庫存編號 539-9456
製造零件編號TC74HC123AP(F)
BrandToshiba
TWD12.60
/個 (每包:5個)
單位
HC Monostable Multivibrator 2 -5.2mA 5.2mA 13 ns 210 ns @ 2 V 0.004mA Through Hole PDIP 16 19.25 x 6.4 x 3.5mm 3.5mm 19.25mm
RS庫存編號 640-131
製造零件編號SN74LS221N
TWD41.00
單位
LS Monostable Multivibrator 2 -0.4mA 8mA 40 ns 80 ns @ 5 V 4.7mA Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm
RS庫存編號 527-293
製造零件編號CD4098BE
TWD14.60
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 170-3421
製造零件編號MC14538BDR2G
TWD6.00
個 (在毎卷:2500)
單位
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庫存編號 145-0828
製造零件編號SN74LS221N
TWD37.40
毎管:25 個
單位
LS Monostable Multivibrator 2 -0.4mA 8mA 40 ns 80 ns @ 5 V 4.7mA Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm
RS庫存編號 663-0385
製造零件編號CD74HC4538E
TWD24.20
/個 (每包:5個)
單位
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庫存編號 662-8364
製造零件編號SN74LS123DR
TWD26.60
/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