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) Type Package/Case
Texas Instruments NE555P Bipolar Single Timer
Texas Instruments NE555P Bipolar Single Timer
Standard range
Order code: 82-0336
MPN: NE555P

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2,231 in stock, despatched same dayAdditional quantity lead time 16 months
5+ £0.294
10+ £0.255
100+ £0.142
500+ £0.124
Price per unit Ex VAT 		Single Timer IC PDIP
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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3,510 in stock, despatched same dayAdditional quantity lead time 7 days
5+ £0.782
10+ £0.692
100+ £0.510
500+ £0.478
Price per unit Ex VAT 		Low Power Timer IC PDIP
Intersil ICM7555IPA CMOS Low Power Timer
Intersil ICM7555IPA CMOS Low Power Timer
Standard range
Order code: 82-0774
MPN: ICM7555IPA

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1,170 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 		Low Power Timer IC PDIP
Texas Instruments NE556N Dual Timer
Texas Instruments NE556N Dual Timer
Standard range
Order code: 82-0344
MPN: NE556N

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723 in stock, despatched same dayAdditional quantity lead time 7 days
5+ £0.644
10+ £0.550
100+ £0.375
500+ £0.311
Price per unit Ex VAT 		Dual Timer IC PDIP
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

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492 in stock, despatched same dayAdditional quantity lead time 7 days
5+ £0.982
25+ £0.835
100+ £0.792
Price per unit Ex VAT 		Dual Timer IC DIP14
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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