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 662-8461
製造零件編號SN74LV221APWR
HK$10.194
/個 (每包:5個)
單位
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庫存編號 807-2343
製造零件編號CD14538BM
HK$3.033
/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 919-8985
製造零件編號LTC6993IS6-1TRMPBF
HK$23.561
個 (在毎卷:500)
單位
LVCMOS, LVTTL Monostable Multivibrator 2 -16mA 16mA 1 μs 28ns 0.2mA Surface Mount TSOT-23 6 2.9 x 1.75 x 1mm 1mm 2.9mm
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 809-6273
製造零件編號CD74HC221MT
HK$4.539
Each (On a Tape of 10)
單位
HC Monostable Multivibrator 2 -5.2mA 5.2mA 595 μs 315 ns@ 50 pF 160µA Surface Mount SOIC 16 10 x 4 x 1.5mm 1.5mm 10mm
RS庫存編號 162-6914
製造零件編號CD14538BPWR
HK$1.48
個 (在毎卷:2000)
單位
4000 Monostable Multivibrator 2 - - 30 ns 600 ns @ 5 V 0.1mA Surface Mount TSSOP 16 5 x 4.4 x 1.15mm 1.15mm 5mm
RS庫存編號 662-7358
製造零件編號CD74HCT423M96
HK$4.944
/個 (每包:5個)
單位
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庫存編號 145-0202
製造零件編號CD74HC221EE4
HK$2.717
毎管:25 個
單位
HC Monostable Multivibrator 2 -5.2mA 5.2mA 12 ns 210 ns @ 2 V 0.008mA Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm
全新
RS庫存編號 186-8851
製造零件編號MC14521BDG
HK$5.62
毎管:48 個
單位
- Frequency Divider - - - 120 ns 2600 ns @ 50 pF 150µA Surface Mount SOIC 16 10 x 4 x 1.5mm 1.5mm 10mm
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 151-3419
製造零件編號74HC4538PW,118
BrandNexperia
HK$3.732
/個 (每包:25個)
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 541-9308
製造零件編號TC74HC423AF(F)
BrandToshiba
HK$9.624
/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 662-7162
製造零件編號CD74HC423M96
HK$5.16
/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 153-1982
製造零件編號74HC123PW-Q100,118
BrandNexperia
HK$1.215
個 (在毎卷:2500)
單位
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庫存編號 663-2385
製造零件編號SN74LS122D
HK$9.466
/個 (每包:5個)
單位
LS Monostable Multivibrator 1 -0.4mA 8mA 40 ns 56 ns @ 5 V 6mA Surface Mount SOIC 14 8.65 x 3.91 x 1.58mm 1.58mm 8.65mm
RS庫存編號 145-0828
製造零件編號SN74LS221N
HK$7.72
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 170-4890
製造零件編號74LVC1G123DP,125
BrandNexperia
HK$1.796
個 (在毎卷:3000)
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 178-6975
製造零件編號74HC423D,652
BrandNexperia
HK$5.68
毎管:50 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
RS庫存編號 662-9635
製造零件編號CD4047BM
HK$3.792
/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 816-4641
製造零件編號74HCT123PW,112
BrandNexperia
HK$2.381
/個 (每包:32個)
單位
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