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Everything about 555 timer IC

Integrated circuit used for timer applications

The 555 timer IC is an integrated circuit used in a variety of timer, delay, pulse generation, and oscillator applications. It is one of the most popular timing ICs due to its flexibility and price. Derivatives provide two or four timing circuits in one package. The design was first marketed in 1972 by Signetics and used bipolar junction transistors. Since then, numerous companies have made the original timers and later similar low-power CMOS timers. In 2017, it was said that over a billion 555 timers are produced annually by some estimates, and that the design was "probably the most popular integrated circuit ever made". Wikipedia →

🧭 Start here: a 6-step reading path

  1. Read the overview: 555 timer ICA 5-minute orientation
  2. Skim a recent paper: Measurement and Simulation of the Magnetic Fields from a 555 Timer Integrated Circuit Using a Quantum Diamond Microscope and Finite-Element AnalysisInfluential work since 2022
  3. Pick up a classic book: Practical Electronics for InventorsThe most-reprinted book on the subject
  4. Read the landmark paper: 555-Timer and Comparators Operational at 500 °CCited 16 times
  5. Go sideways: MultivibratorA closely related topic
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🏆 Landmark papers (most cited)

🆕 Influential since 2022

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