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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Description Prix 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
N° de stock RS 190-5908
Référence fabricantDS1100LZ-20+
5,37 €
Each (In a Pack of 2)
Unité
Surface Mount Precision SOIC 1 8 1MHz 3 V 3.6 V -40 °C +85 °C - 8 (Minimum)mA -1mA -
N° de stock RS 189-7188
Référence fabricantDS1682S+
3,372 €
Each (In a Tube of 100)
Unité
Surface Mount Programmable SOIC - 8 0.1MHz 2.5 V 5.5 V -40 °C +85 °C - - - -
N° de stock RS 189-7189
Référence fabricantICM7555IPA+
2,448 €
Each (In a Tube of 50)
Unité
Through Hole Standard PDIP 1 8 - 2 V 18 V -20 °C +85 °C - 3.2mA 2mA -
N° de stock RS 190-4884
Référence fabricantICM7240IPE+
5,95 €
Each (In a Tube of 25)
Unité
Through Hole Fixed, Programmable PDIP 1 16 - 2 V 16 V -20 °C +85 °C - - - -
N° de stock RS 190-5911
Référence fabricantDS1100LZ-200+
5,44 €
Each (In a Pack of 2)
Unité
Surface Mount Precision SOIC 1 8 1MHz 3 V 3.6 V -40 °C +85 °C - 8 (Minimum)mA -1mA -
N° de stock RS 189-8665
Référence fabricantICM7555IPA+
2,948 €
Each (In a Pack of 5)
Unité
Through Hole Standard PDIP 1 8 - 2 V 18 V -20 °C +85 °C - 3.2mA 2mA -
N° de stock RS 190-4882
Référence fabricantDS1100LZ-200+
4,058 €
Each (In a Tube of 100)
Unité
Surface Mount Precision SOIC 1 8 1MHz 3 V 3.6 V -40 °C +85 °C - 8 (Minimum)mA -1mA -
N° de stock RS 190-4886
Référence fabricantICM7555ESA+
1,61 €
Each (In a Tube of 100)
Unité
Surface Mount Astable, RC Monostable SOIC 1 8 - 2 V 18 V -40 °C +85 °C - - - -
N° de stock RS 191-4247
Référence fabricantICM7556IPD+
3,971 €
Each (In a Tube of 25)
Unité
Through Hole Monolithic PDIP 2 14 - 2 V 16.5 V -20 °C +85 °C - 3.2mA 2mA -
N° de stock RS 189-8615
Référence fabricantDS1682S+
4,635 €
Each (In a Pack of 2)
Unité
Surface Mount Programmable SOIC - 8 0.1MHz 2.5 V 5.5 V -40 °C +85 °C - - - -
N° de stock RS 190-4888
Référence fabricantMAX7375AXR805+T
0,669 €
Each (On a Reel of 2500)
Unité
Surface Mount - SC-70 - 3 9.99MHz 2.7 V 5.5 V -40 °C +125 °C - - - -
N° de stock RS 190-4879
Référence fabricantDS1023S-200+
10,965 €
Each (In a Tube of 46)
Unité
Surface Mount Programmable SOIC 1 16 10MHz 4.75 V 5.25 V 0 °C +70 °C - 8 (Minimum)mA -1mA -
N° de stock RS 698-7127
Référence fabricantDS1682S+
4,63 €
Each
Unité
Surface Mount Programmable SOIC - 8 0.1MHz 2.5 V 5.5 V -40 °C +85 °C - - - -
N° de stock RS 190-4883
Référence fabricantDS1100LZ-50+
4,047 €
Each (In a Tube of 100)
Unité
Surface Mount Precision SOIC 1 8 1MHz 3 V 3.6 V -40 °C +85 °C - 8 (Minimum)mA -1mA -
N° de stock RS 190-4887
Référence fabricantICM7556ISD+
3,002 €
Each (In a Tube of 50)
Unité
Surface Mount Astable, RC Monostable SOIC 1 14 - 2 V 18 V -20 °C +85 °C - - - -
N° de stock RS 190-4885
Référence fabricantICM7242IPA+
3,514 €
Each (In a Tube of 50)
Unité
Through Hole Fixed, Programmable PDIP 1 8 - 2 V 16 V 0 °C +85 °C - - - -
N° de stock RS 540-4520
Référence fabricantICM7555ISA+
2,40 €
Each
Unité
Surface Mount Standard SOIC 1 8 0.5MHz 2 V 18 V -20 °C +85 °C - 3.2mA -2mA -
N° de stock RS 191-4848
Référence fabricantICM7556IPD+
4,644 €
Each (In a Pack of 5)
Unité
Through Hole Monolithic PDIP 2 14 - 2 V 16.5 V -20 °C +85 °C - 3.2mA 2mA -
N° de stock RS 190-5920
Référence fabricantMAX7375AXR805+T
1,218 €
Each (In a Pack of 5)
Unité
Surface Mount - SC-70 - 3 9.99MHz 2.7 V 5.5 V -40 °C +125 °C - - - -
N° de stock RS 190-5904
Référence fabricantDS1023S-200+
12,28 €
Each
Unité
Surface Mount Programmable SOIC 1 16 10MHz 4.75 V 5.25 V 0 °C +70 °C - 8 (Minimum)mA -1mA -