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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รายละเอียดสินค้า / Description ราคา / Price 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 Stock No. 121-9248
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.SE555P
THB8.801
Each (In a Tube of 50)
Units
Through Hole Standard PDIP 1 8 - 4.5 V 18 V -55 °C +125 °C 12mA 200mA -200mA -
RS Stock No. 709-2110
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.SE555P
THB13.26
Each: (In a Pack of 5)
Units
Through Hole Standard PDIP 1 8 - 4.5 V 18 V -55 °C +125 °C 12mA 200mA -200mA -
RS Stock No. 788-334
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.TLC555CD
THB26.66
Each
Units
Surface Mount Standard SOIC 1 8 2MHz 2 V 15 V 0 °C +70 °C - 100mA -10mA -
RS Stock No. 168-4873
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.TLC555CD
THB22.06
Each (In a Tube of 75)
Units
Surface Mount Standard SOIC 1 8 2MHz 2 V 15 V 0 °C +70 °C - 100mA -10mA -
RS Stock No. 922-2690
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.TLC555CDR
THB9.098
Each (On a Reel of 2500)
Units
Surface Mount Standard SOIC 1 8 2MHz 2 V 15 V 0 °C +70 °C - 100mA -10mA -
RS Stock No. 662-4006
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.TLC555CDR
THB18.819
Each: (In a Pack of 10)
Units
Surface Mount Standard SOIC 1 8 2MHz 2 V 15 V 0 °C +70 °C - 100mA -10mA -
RS Stock No. 866-0199
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.NE555P
THB7.227
Each (In a Tube of 50)
Units
Through Hole Adjustable and Monostable PDIP 1 8 - 4.5 V 16 V 0 °C +70 °C - 200mA -200mA 300 ns @ 15 pF
RS Stock No. 221-5535
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.NE555P
THB11.204
Each: (In a Pack of 50)
Units
Through Hole Standard PDIP 1 8 - 4.5 V 16 V 0 °C +70 °C 15mA 200mA -200mA -
RS Stock No. 460-516
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.LM555CM/NOPB
THB37.494
Each: (In a Pack of 10)
Units
Surface Mount Standard SOIC 1 8 - 4.5 V 16 V 0 °C +70 °C - 200mA -200mA -
RS Stock No. 100-0685
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.LM555CM/NOPB
THB34.947
Each (In a Tube of 95)
Units
Surface Mount Standard SOIC 1 8 - 4.5 V 16 V 0 °C +70 °C - 200mA -200mA -
RS Stock No. 170-8188
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.ICM7555IBAZ
Brand :Intersil
THB17.818
Each (In a Tube of 98)
Units
Surface Mount Standard SOIC 1 8 1MHz 2 V 18 V -25 °C +85 °C - 20mA -0.8mA -
RS Stock No. 709-2532
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CD4536BEE4
THB10.484
Each: (In a Pack of 10)
Units
Through Hole Programmable PDIP 1 16 - 3 V 18 V -55 °C +125 °C 0.1mA 4.2mA -4.2mA 8000 ns@ 5 V
RS Stock No. 921-5507
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.ICM7555IBAZ
THB18.165
Each: (In a Pack of 25)
Units
Surface Mount Standard SOIC 1 8 1MHz 2 V 18 V -25 °C +85 °C - 20mA -0.8mA -
RS Stock No. 145-0016
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CD4536BEE4
THB7.24
Each (In a Tube of 25)
Units
Through Hole Programmable PDIP 1 16 - 3 V 18 V -55 °C +125 °C 0.1mA 4.2mA -4.2mA 8000 ns @ 5 V
RS Stock No. 121-8520
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.TLC555IP
THB19.685
Each (In a Tube of 50)
Units
- - - - - - - - - - - - - -
RS Stock No. 346-7024
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.TLC555IP
THB29.35
Each
Units
Through Hole Standard PDIP 1 8 2MHz 3 V 15 V -40 °C +85 °C - 100mA -10mA -
RS Stock No. 518-9518
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.MC14541BDG
THB13.55
Each
Units
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 Stock No. 169-8718
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.LM555CN
THB6.59
Each (On a Reel of 3000)
Units
Through Hole Reset PDIP 1 8 - 4.5 V 16 V 0 °C +70 °C - 50mA 200mA -
RS Stock No. 806-2835
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.LM555CN
THB16.42
Each (In a Tube of 50)
Units
Through Hole Reset PDIP 1 8 - 4.5 V 16 V 0 °C +70 °C - 50mA 200mA -
RS Stock No. 121-8461
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.NE555D
THB7.235
Each (In a Tube of 75)
Units
Surface Mount Standard SOIC 1 8 - 4.5 V 16 V 0 °C +70 °C 15mA 200mA -200mA -
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