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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) 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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Despatched same day - 360 in stockAdditional quantity lead time 16 months
5+ £0.253
50+ £0.203
100+ £0.166
500+ £0.137
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 - 3,025 in stockAdditional quantity lead time 7 days
5+ £0.852
10+ £0.755
100+ £0.556
500+ £0.524
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 - 430 in stockAdditional quantity lead time 7 days
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 - 3,673 in stockAdditional quantity lead time 7 days
5+ £0.438
10+ £0.375
100+ £0.255
500+ £0.211
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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Despatched same day - 227 in stockAdditional quantity lead time 7 days
5+ £0.982
25+ £0.835
100+ £0.792
Price per unit Ex VAT 		Dual Timer IC DIP14

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