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 540-7692
製造零件編號TC74HC123AF(F)
BrandToshiba
HK$5.50
/個 (每包:5個)
單位
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
RS庫存編號 171-3314
製造零件編號74VHC123AFT
BrandToshiba
HK$0.967
個 (在毎卷:2500)
單位
74VHC Monostable Multivibrator 27 -8mA 8mA 5 ns 24.5ns 80µA Surface Mount TSSOP 16 5 x 4.4 x 1mm 1mm 5mm
RS庫存編號 601-4134
製造零件編號TC4538BP(F)
BrandToshiba
HK$10.322
/個 (每包:5個)
單位
4000 Monostable Multivibrator 2 - - 25 ns 760 ns @ 5 V 20mA Through Hole PDIP 16 19.25 x 6.4 x 3.5mm 3.5mm 19.25mm
RS庫存編號 171-3330
製造零件編號74VHC221AFT
BrandToshiba
HK$0.974
個 (在毎卷:2500)
單位
74VHC Monostable Multivibrator 27 -8mA 8mA 5 ns 24.5ns 80µA Surface Mount TSSOP 16 5 x 4.4 x 1mm 1mm 5mm
RS庫存編號 756-2915
製造零件編號TC74HC123AF(ELNE,F
BrandToshiba
HK$4.556
/個 (每包:5個)
單位
74HC Monostable Multivibrator 2 -5.2mA 5.2mA 95 ns@ 2 V 295ns 0.04mA Surface Mount SOP 16 10.8 x 5.3 x 1.5mm 1.5mm 10.8mm
RS庫存編號 541-9308
製造零件編號TC74HC423AF(F)
BrandToshiba
HK$9.616
/個 (每包:5個)
單位
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
RS庫存編號 540-0427
製造零件編號TC74HC4538AP(F)
BrandToshiba
HK$10.87
/個 (每包:5個)
單位
HC Monostable Multivibrator 2 -5.2mA 5.2mA 13 ns 250 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 601-4128
製造零件編號TC4538BF(F)
BrandToshiba
HK$8.972
/個 (每包:5個)
單位
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庫存編號 171-3598
製造零件編號74VHC123AFT
BrandToshiba
HK$1.603
/個 (每包:50個)
單位
74VHC Monostable Multivibrator 27 -8mA 8mA 5 ns 24.5ns 80µA Surface Mount TSSOP 16 5 x 4.4 x 1mm 1mm 5mm
RS庫存編號 540-0001
製造零件編號TC74HC423AP(F)
BrandToshiba
HK$9.972
/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 539-9456
製造零件編號TC74HC123AP(F)
BrandToshiba
HK$4.422
/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 541-9358
製造零件編號TC74HC4538AF(F)
BrandToshiba
HK$10.764
/個 (每包:5個)
單位
HC Monostable Multivibrator 2 -5.2mA 5.2mA 13 ns 250 ns @ 2 V 0.004mA Surface Mount SOP 16 10.3 x 5.3 x 1.5mm 1.5mm 10.3mm
RS庫存編號 171-3459
製造零件編號74VHC221AFT
BrandToshiba
HK$1.613
/個 (每包:50個)
單位
74VHC Monostable Multivibrator 27 -8mA 8mA 5 ns 24.5ns 80µA Surface Mount TSSOP 16 5 x 4.4 x 1mm 1mm 5mm