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 Operating Frequency Supply
Texas Instruments NE555P Bipolar Single Timer
Texas Instruments NE555P Bipolar Single Timer
Standard range
Order code: 82-0336
MPN: NE555P

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Out of stockPlease contact us for lead time
5+ £0.345
50+ £0.255
100+ £0.198
500+ £0.165
Price per unit Ex VAT 		Single Timer IC PDIP 500khz voltage 4.5 to 16V
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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Despatched same day - 2,880 in stockAdditional quantity lead time 7 days
5+ £0.791
10+ £0.700
100+ £0.515
500+ £0.487
Price per unit Ex VAT 		Low Power Timer IC PDIP 2.1mhz voltage 2 to 15V
Intersil ICM7555IPA CMOS Low Power Timer
Intersil ICM7555IPA CMOS Low Power Timer
Standard range
Order code: 82-0774
MPN: ICM7555IPA

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Despatched same day - 395 in stockAdditional 600 due on 21/08/2026
5+ £0.589
10+ £0.533
100+ £0.457
500+ £0.419
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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Despatched same day - 3,358 in stockAdditional quantity lead time 7 days
5+ £0.380
10+ £0.325
100+ £0.223
500+ £0.185
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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Out of stockBack-order availability date - 24/08/2026
5+ £0.992
25+ £0.838
100+ £0.796
Price per unit Ex VAT 		Dual Timer IC DIP14

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