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555 Timer ICs

The 555 timer is a highly stable controller capable of producing accurate time delays or oscillation. The 556 timer combines two 555 timers on a single chip.

The 555 can be used in countless applications and has three recognised operating modes. In monostable mode the 555 functions as a one-shot or pulse stretcher. Applications include timers, missing pulse detection and bouncefree switches.

In astable mode the 555 can operate as an oscillator. Applications include LED and lamp flashers, pulse generation, logic clocks, tone generation, security alarms and Pulse Width Modulation (PWM).

In bistable mode the 555 can operate as a flip-flop or changeover. Applications include bouncefree latched switches.

The ICM7555 and ICM7556 are improved versions including lower supply current and a wide supply voltage range.

  • Bipolar and CMOS technologies, CMOS offering lower power consumption (1mW typ at VDD=5V)
  • TTL logic compatible
  • Through hole and surface mount
  • Choice of leading brands
Description Image Product Buy Pricing (Ex VAT)
Texas Instruments NE555P Bipolar Single Timer
Texas Instruments NE555P Bipolar Single Timer
Standard range
Order code: 82-0336
MPN: NE555P

Order in multiples of 5


13,942 in stock, despatched same dayAdditional quantity lead time 7 days
5+ £0.242
10+ £0.180
100+ £0.138
500+ £0.121
Price per unit Ex VAT
Texas Instruments TLC555CP CMOS Low Power Timer
Texas Instruments TLC555CP CMOS Low Power Timer
Standard range
Order code: 82-0342
MPN: TLC555CP

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2,095 in stock, despatched same dayAdditional quantity lead time 7 days
5+ £0.613
10+ £0.498
100+ £0.396
500+ £0.355
Price per unit Ex VAT
Intersil ICM7555IPA CMOS Low Power Timer
Intersil ICM7555IPA CMOS Low Power Timer
Standard range
Order code: 82-0774
MPN: ICM7555IPA

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1,675 in stock, despatched same dayAdditional quantity lead time 4 months
5+ £0.566
10+ £0.512
100+ £0.438
500+ £0.401
Price per unit Ex VAT
Texas Instruments NE556N Dual Timer
Texas Instruments NE556N Dual Timer
Standard range
Order code: 82-0344
MPN: NE556N

Order in multiples of 5


843 in stock, despatched same dayAdditional quantity lead time 7 days
5+ £0.405
10+ £0.346
100+ £0.236
500+ £0.195
Price per unit Ex VAT
Texas Instruments TLC556CN Linear IC Dual LinCMOS™ Timer DIP14
Texas Instruments TLC556CN Linear IC Dual LinCMOS™ Timer DIP14
Standard range
Order code: 51-7532
MPN: TLC556CN

Order in multiples of 5


132 in stock, despatched same dayAdditional quantity lead time 7 days
5+ £1.02
25+ £0.868
100+ £0.777
Price per unit Ex VAT
DeviceFunctionManufacturerPackageOrder code
NE555NSingle timerTIDIL-882-0336
NE555DSingle timerTISO-882-0338
TS555CDLow power CMOS single timerTISO-882-1050
TLC555IDCMOS single timerTISOIC-882-1200
TLC555CPLinCMOS timerTIDIL-882-0342
SA555PSingle timer TTL compatibleTIDIL-851-7531
ICM7555IPASingle low power timerIntersilDIL-882-0774
TLC556CNDual LinCMOS timerTIDIL-851-7532
NE556DDual timer TTL compatibleTISO-1451-7533
NE556NDual timerTIDIL-1482-0344
TS556CNLow power CMOS dual timerSTDIL-1482-1052
ICM7556IPDDual low power timerIntersilDIL-1482-0776


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