CSS555 Micropower Timer SOIC-8

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Looking for an interactive & fun 555 555 Timer Project? Check out Jameco's selection kits & projects for this popular device. The 555 Timer Super Combo is a companion parts bundle created for handling parts & building while reading along. We also carry the Parts Kit and Ultimate Beginner's Guide to the 555 Timer Book - which includes over 100 parts for your experimentation!

CSS555 Micropower Timer

The CSS555 is a micropower version of the popular 555 timer IC. It features an operating current under 5µA and a minimum supply voltage of 1.2V, making it ideal for battery-operated applications. A six-decade programmable counter is included to allow generation of long timing delays. Configuration data for the counter is held in EEPROM to maintain the standard pin count of eight. The analog circuits are temperature compensated to provide excellent stability over a wide ambient temperature range. A simple four-wire interface provides Read/Write access to the EEPROM.


  • More than 10x lower power consumption than average 555 timers
  • Active current mode <5µA
  • Wide supply range: 1.2V to 5.5V
  • Temperature range: -40°C to +85°C
  • Internal 6 decade programmable counter
  • Monostable or astable operation
  • Extremely low transient switching current
  • Temperature stability: 0.005% per °C
  • Package: 8-pin SOIC


  • Portable & Battery-Powered Systems
  • Precision Timing & Pulse Generation
  • Ultra Long Period Delay Generation
  • Single Cell Battery Applications
  • Ultra Low Power Timers
  • Pulse Width Modulation
  • Low Cost, High Reliability Applications

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