Timer Circuits

Timer circuits are used to control one or more sequences of events within an electronic system. Timer circuits work by changing the circuit from its current state to another in advance following a set parameter.

Where would I use a timer circuit?

You can use timer circuits for a wide range of basic timing functions, like turning a light on for a certain amount of time or on and off repeatedly within a set time to create a flashing light or lighting sequence. Timer circuits 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 785-818
제조사 부품 번호NE555D
₩719.20
Each
수량
Surface Mount Standard SOIC 1 8 - 4.5 V 16 V 0 °C +70 °C 15mA 200mA -200mA -
RS 제품 번호 121-8461
제조사 부품 번호NE555D
₩455.70
Each (In a Tube of 75)
수량
Surface Mount Standard SOIC 1 8 - 4.5 V 16 V 0 °C +70 °C 15mA 200mA -200mA -
RS 제품 번호 923-1477
제조사 부품 번호CS82C54-10Z96
₩13,306.75
Each (On a Reel of 750)
수량
Surface Mount Programmable PLCC 1 28 10MHz 4.5 V 5.5 V 0 °C +70 °C - 2.5mA -2.5mA 100 ns @ 5 V
RS 제품 번호 921-5652
제조사 부품 번호CS82C54-10Z96
₩16,924.45
Each
수량
Surface Mount Programmable PLCC 1 28 10MHz 4.5 V 5.5 V 0 °C +70 °C - 2.5mA -2.5mA 100 ns @ 5 V
RS 제품 번호 221-5535
제조사 부품 번호NE555P
₩443.30
Each (In a Pack of 50)
수량
Through Hole Standard PDIP 1 8 - 4.5 V 16 V 0 °C +70 °C 15mA 200mA -200mA -
RS 제품 번호 170-8196
제조사 부품 번호CS82C54-10Z
제조사Intersil
₩14,835.05
Each (In a Tube of 37)
수량
Surface Mount Programmable PLCC 1 28 10MHz 4.5 V 5.5 V 0 °C +70 °C - 2.5mA -2.5mA 100 ns @ 5 V
RS 제품 번호 866-0199
제조사 부품 번호NE555P
₩370.45
Each (In a Tube of 50)
수량
Through Hole Adjustable and Monostable PDIP 1 8 - 4.5 V 16 V 0 °C +70 °C - 200mA -200mA 300 ns @ 15 pF
RS 제품 번호 921-5582
제조사 부품 번호CS82C54-10Z
₩15,318.65
Each
수량
Surface Mount Programmable PLCC 1 28 10MHz 4.5 V 5.5 V 0 °C +70 °C - 2.5mA -2.5mA 100 ns @ 5 V
RS 제품 번호 518-9518
제조사 부품 번호MC14541BDG
제조사ON Semiconductor
₩626.20
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 921-5377
제조사 부품 번호ICM7556IPDZ
₩2,214.95
Each (In a Pack of 5)
수량
Through Hole Standard PDIP 2 14 1MHz 2 V 18 V -25 °C +85 °C - 20mA -0.8mA -
RS 제품 번호 662-3999
제조사 부품 번호NE555PWR
₩486.70
Each (In a Pack of 10)
수량
Surface Mount Standard TSSOP 1 8 - 4.5 V 16 V 0 °C +70 °C 15mA 200mA -200mA -
RS 제품 번호 146-2399
제조사 부품 번호ICM7556IPDZ
₩1,886.35
Each (In a Tube of 25)
수량
Through Hole Standard PDIP 2 14 1MHz 2 V 18 V -25 °C +85 °C - 20mA -0.8mA -
RS 제품 번호 162-7010
제조사 부품 번호NE555PWR
₩116.25
Each (On a Reel of 2000)
수량
Surface Mount Standard TSSOP 1 8 - 4.5 V 16 V 0 °C +70 °C 15mA 200mA -200mA -
RS 제품 번호 178-4795
제조사 부품 번호MC14541BDG
제조사ON Semiconductor
₩497.55
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 709-1999
제조사 부품 번호CD4541BE
₩709.90
Each (In a Pack of 10)
수량
Through Hole Programmable PDIP 1 14 0.1MHz 3 V 18 V -55 °C +125 °C 0.1mA 12.6mA -12.6mA 18000 ns@ 5 V
RS 제품 번호 169-8718
제조사 부품 번호LM555CN
제조사ON Semiconductor
₩300.70
Each (On a Reel of 3000)
수량
Through Hole Reset PDIP 1 8 - 4.5 V 16 V 0 °C +70 °C - 50mA 200mA -
RS 제품 번호 620-0357
제조사 부품 번호TLC555ID
₩992.00
Each (In a Pack of 10)
수량
Surface Mount Standard SOIC 1 8 2MHz 3 V 15 V -40 °C +85 °C - 100mA -10mA -
RS 제품 번호 923-6712
제조사 부품 번호CD4541BE
₩632.40
Each (In a Tube of 25)
수량
Through Hole Programmable PDIP 1 14 0.1MHz 3 V 18 V -55 °C +125 °C 0.1mA 12.6mA -12.6mA 18000 ns @ 5 V
RS 제품 번호 528-410
제조사 부품 번호TLC555IDR
₩923.80
Each (In a Pack of 25)
수량
Surface Mount Standard SOIC 1 8 2MHz 3 V 15 V -40 °C +85 °C - 100mA -10mA -
RS 제품 번호 829-1516
제조사 부품 번호STWD100YNPWY3F
₩1,302.00
Each (In a Pack of 10)
수량
Surface Mount Watchdog SOT-23 1 5 - 2.7 V 5.5 V -40 °C +125 °C - - - -