Timer Circuits

Timer circuits are used to control sequences of events in electronic systems. They work by changing the circuit from one state to another in advance. 


Applications for timer circuits

You can use timer circuits for basic timing functions, like turning a light on for a certain amount of time or creating a flashing light. They can also be used to create musical notes of a particular frequency.


555 timers

The most widespread type of timer circuit is the 555 timer, which is made up of an eight-pin dual in-line package containing 25 transistors, two diodes and 16 resistors. They can be used as either astable or monostable timers: 

  • Monostable: Often called a one-shot timer, a monostable timer stays on for a certain length of time and then turns off. The timing process starts when the timer is switched on.
  • Astable: An astable timer is switched on to provide a constant on/off digital output. The timer can be used make an LED flash, and the rate of flashing is determined by a capacitor in the circuit.

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제품설명 단가 Mounting Type Timer Type Package Type Number of Internal Timers Pin Count Maximum Input Frequency Minimum Operating Supply Voltage Maximum Operating Supply Voltage Minimum Operating Temperature Maximum Operating Temperature Maximum Quiescent Current Maximum Low Level Output Current Maximum High Level Output Current Maximum Propagation Delay Time @ Maximum CL
RS 제품 번호 688-1543
제조사 부품 번호MC14541BDR2G
제조사ON Semiconductor
₩494.45
Each (In a Pack of 5)
수량
Surface Mount Programmable SOIC 1 14 3MHz 3 V 18 V -55 °C +125 °C 0.02mA 19.3mA -16.3mA 18000 ns@ 5 V
RS 제품 번호 518-9518
제조사 부품 번호MC14541BDG
제조사ON Semiconductor
₩548.70
Each
수량
Surface Mount Programmable SOIC 1 14 3MHz 3 V 18 V -55 °C +125 °C 0.02mA 19.3mA -16.3mA 18000 ns@ 5 V
RS 제품 번호 178-4795
제조사 부품 번호MC14541BDG
제조사ON Semiconductor
₩409.20
Each (In a Tube of 55)
수량
Surface Mount Programmable SOIC 1 14 3MHz 3 V 18 V -55 °C +125 °C 0.02mA 19.3mA -16.3mA 18000 ns @ 5 V
RS 제품 번호 169-8718
제조사 부품 번호LM555CN
제조사ON Semiconductor
₩189.10
Each (On a Reel of 3000)
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Through Hole Reset PDIP 1 8 - 4.5 V 16 V 0 °C +70 °C - 50mA 200mA -
RS 제품 번호 178-4703
제조사 부품 번호LM555CM
제조사ON Semiconductor
₩364.25
Each (In a Tube of 100)
수량
Surface Mount Reset SOIC 1 8 - 4.5 V 16 V 0 °C +70 °C - 50mA 200mA -
RS 제품 번호 806-2832
제조사 부품 번호LM555CM
제조사ON Semiconductor
₩322.40
Each (In a Tube of 90)
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Surface Mount Reset SOIC 1 8 - 4.5 V 16 V 0 °C +70 °C - 50mA 200mA -
RS 제품 번호 806-2835
제조사 부품 번호LM555CN
제조사ON Semiconductor
₩354.95
Each (In a Tube of 50)
수량
Through Hole Reset PDIP 1 8 - 4.5 V 16 V 0 °C +70 °C - 50mA 200mA -
RS 제품 번호 162-9390
제조사 부품 번호MC1455DR2G
제조사ON Semiconductor
₩199.95
Each (On a Reel of 2500)
수량
Surface Mount Standard SOIC 1 8 - 4.5 V 16 V 0 °C +75 °C 15mA - 200mA -
RS 제품 번호 772-9310
제조사 부품 번호FT3001MPX
제조사ON Semiconductor
₩434.00
Each (In a Pack of 10)
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Surface Mount Reset MLP 4 8 - 1.8 V 5 V -40 °C +85 °C 1µA 500mA -500µA 7.2ns
RS 제품 번호 787-8709
제조사 부품 번호MC1455BDR2G
제조사ON Semiconductor
₩475.85
Each (In a Pack of 10)
수량
Surface Mount Standard SOIC 1 8 - 4.5 V 16 V -40 °C +85 °C 15mA - 200mA -
RS 제품 번호 787-8706
제조사 부품 번호MC1455DR2G
제조사ON Semiconductor
₩409.20
Each (In a Pack of 20)
수량
Surface Mount Standard SOIC 1 8 - 4.5 V 16 V 0 °C +75 °C 15mA - 200mA -
RS 제품 번호 145-4759
제조사 부품 번호MC1455BDR2G
제조사ON Semiconductor
₩234.05
Each (On a Reel of 2500)
수량
Surface Mount Standard SOIC 1 8 - 4.5 V 16 V -40 °C +85 °C 15mA - 200mA -
RS 제품 번호 166-2846
제조사 부품 번호FT3001MPX
제조사ON Semiconductor
₩333.25
Each (On a Reel of 3000)
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Surface Mount Reset MLP 4 8 - 1.8 V 5 V -40 °C +85 °C 1µA 500mA -500µA 7.2ns
RS 제품 번호 787-8702
제조사 부품 번호MC1455DG
제조사ON Semiconductor
₩466.55
Each (In a Pack of 14)
수량
Surface Mount Standard SOIC 1 8 - 4.5 V 16 V 0 °C +75 °C 15mA - 200mA -