555 timer IC (English Wikipedia)

Lowe, Doug (2017-02-06). Electronics All-in-One For Dummies. Wiley. p. 339. ISBN 978-1-119-32079-1. The 555 timer chip, developed in 1970, is probably the most popular integrated circuit ever made. By some estimates, more than a billion of them are manufactured every year.
Scherz, Paul; Monk, Simon (2016). Practical Electronics for Inventors (4th ed.). McGraw Hill. p. 687. ISBN 978-1-259-58755-9. The 555 gets its name from the three 5-kW +VCC R1 discharging path 555 R 2 C 6 resistors shown in the block diagram. These resistors act as a three-step voltage.
Carr, Joseph (1996-12-19). Linear IC Applications: A Designer's Handbook. Newnes. p. 119. ISBN 978-0-7506-3370-3.
Buiting, Jan (2003). 308 Circuits. Elektor International Media. ISBN 978-0-905705-66-8.
Platt, Charles; Jansson, Fredrik (2014-11-13). LEDs, LCDs, Audio, Thyristors, Digital Logic, and Amplification. Encyclopedia of Electronic Components. Vol. 2. Maker Media. ISBN 978-1-4493-3414-7.

businesswire.com (Global: 828^th place; English: 485^th place)

"ON Semiconductor Successfully Completes Acquisition of Fairchild Semiconductor". Business Wire. September 19, 2016. Archived from the original on January 28, 2020.

circuitstoday.com (Global: low place; English: low place)

"The History of 555 Timer IC – Story of Invention by Hans Camenzind:555 timer IC as a PWM generator". Electronic Circuits and Diagrams-Electronic Projects and Design. Circuits Today 2026. Retrieved 14 March 2026.

customsiliconsolutions.com (Global: low place; English: low place)

"CSS555 Datasheet" (PDF). Custom Silicon Solutions. July 2012. Archived (PDF) from the original on June 29, 2017.

datasheetarchive.com (Global: low place; English: low place)

datasheet.datasheetarchive.com

Reick, Ullrich (1986-03-01). Zeitgeber-IS B 555 / B 556 (PDF) (in German). Halbleiterwerk Frankfurt (Oder).

diodes.com (Global: low place; English: low place)

"ZSCT1555 Datasheet" (PDF). Diodes Incorporated. July 2006. Archived (PDF) from the original on June 29, 2017.

diystompboxes.com (Global: low place; English: low place)

R.G. (January 11, 2009). "Re: Any experience designing 555 switched mode power supplies?". DIYstompboxes.com forum: Any experience designing 555 switched mode power supplies? Started by frequencycentral, January 11, 2009, 09:03:44 AM. DIYstompboxes.com. p. Reply #2. Retrieved 15 March 2026. Using a 555 for a switched mode power supply is how we (= us EE power supply designers, at the time) used to do things before there were custom chips for this.

doi.org (Global: 2^nd place; English: 2^nd place)

Santo, Brian (May 2009). "25 Microchips That Shook the World". IEEE Spectrum. 46 (5): 34–43. doi:10.1109/MSPEC.2009.4907384. S2CID 20539726.
Camenzind, H.R. (September 1997). "Redesigning the old 555 [timer circuit]". IEEE Spectrum. 34 (9): 80–85. doi:10.1109/6.619384.
GoldStein, Harry (March 3, 2003). "The Irresistible Transistor". IEEE Spectrum. 40 (3): 42–47. doi:10.1109/MSPEC.2003.1184435. Retrieved 2020-08-29.

easii-ic.com (Global: low place; English: low place)

"XTR655 Datasheet" (PDF). X-REL Semiconductor. August 2021. Archived (PDF) from the original on July 10, 2023.

eetimes.com (Global: 4,224^th place; English: 2,761^st place)

Fuller, Brian (15 August 2012). "Hans Camenzind, 555 timer inventor, dies". EE Times. Retrieved 27 December 2016.
"Former Motorola group emerges as ON Semiconductor". EE Times. August 5, 1999. Archived from the original on June 8, 2020.

electronicshub.org (Global: low place; English: low place)

"555 Timer as Schmitt Trigger". Electronics Hub. June 19, 2015. Archived from the original on March 15, 2023.

ieee.org (Global: 912^th place; English: 722^nd place)

spectrum.ieee.org

Santo, Brian (May 2009). "25 Microchips That Shook the World". IEEE Spectrum. 46 (5): 34–43. doi:10.1109/MSPEC.2009.4907384. S2CID 20539726.
GoldStein, Harry (March 3, 2003). "The Irresistible Transistor". IEEE Spectrum. 40 (3): 42–47. doi:10.1109/MSPEC.2003.1184435. Retrieved 2020-08-29.
Shirriff, Ken (August 2019). "The Quiet Remaking of Computer Power Supplies". IEEE Spectrum. Retrieved 2026-03-04.

intersil.com (Global: low place; English: low place)

"ICM7555-556 Datasheet" (PDF). Intersil. June 2016. Archived from the original (PDF) on June 29, 2017.

jameco.com (Global: low place; English: low place)

"CSS555 Part Search". Jameco Electronics.

ledsmagazine.com (Global: low place; English: low place)

"Diodes Incorporated closes acquisition of Zetex". LEDs Magazine. June 13, 2008. Archived from the original on May 22, 2020.

microchip.com (Global: low place; English: low place)

ww1.microchip.com

"MIC1555 Datasheet" (PDF). Microchip Technology. March 2017. Archived (PDF) from the original on April 21, 2021.

njr.com (Global: low place; English: low place)

"NJM555 Datasheet" (PDF). Japan Radio Company. November 2012. Archived from the original (PDF) on June 29, 2017.

nutsvolts.com (Global: low place; English: low place)

Senft, James (February 2016). "The Remarkable CSS555". Nuts & Volts Magazine. Archived from the original on May 27, 2020.

onsemi.com (Global: low place; English: low place)

"MC1455 Datasheet" (PDF). ON Semiconductor. December 2009. Archived (PDF) from the original on May 22, 2020.

powerelectronics.com (Global: low place; English: low place)

"Microchip Technology Completes Micrel Acquisition". Power Electronics. August 12, 2015. Archived from the original on May 22, 2020.

renesas.com (Global: low place; English: low place)

"Renesas and Intersil Announce Final Regulatory Approval for Renesas' Acquisition of Intersil". Renesas Electronics. February 22, 2017. Archived from the original on June 13, 2020.

rfcafe.com (Global: low place; English: low place)

"555/556 Timers Databook" (PDF). Signetics. 1973. Archived (PDF) from the original on May 11, 2021.

semanticscholar.org (Global: 15^th place; English: 8^th place)

api.semanticscholar.org

Santo, Brian (May 2009). "25 Microchips That Shook the World". IEEE Spectrum. 46 (5): 34–43. doi:10.1109/MSPEC.2009.4907384. S2CID 20539726.

semiconductormuseum.com (Global: low place; English: low place)

Ward, Jack (2004). "The 555 Timer IC – An Interview with Hans Camenzind". The Semiconductor Museum. Retrieved 2010-04-05.
"Oral History Hans Camenzind Historic 555 IC Page2". The Semiconductor Museum. Retrieved 2020-08-28.
"Oral History Hans Camenzind Historic 555 Integrated Circuit Page6". Semiconductor Museum. Retrieved 2022-02-27.

siliconvalleyhistorical.org (Global: low place; English: low place)

"NXP Semiconductors history". Silicon Valley Historical Association. 2008. Archived from the original on March 21, 2020.

st.com (Global: low place; English: low place)

"TS555 Datasheet" (PDF). STMicroelectronics. June 2015. Archived (PDF) from the original on May 26, 2020.

ti.com (Global: 6,779^th place; English: 4,625^th place)

ti.com

"NE555 Datasheet" (PDF). Texas Instruments. September 2014. Archived (PDF) from the original on June 28, 2017.
"LMC555 Datasheet" (PDF). Texas Instruments. July 2016. Archived (PDF) from the original on June 28, 2017.
"TLC555 Datasheet" (PDF). Texas Instruments. August 2016. Archived (PDF) from the original on June 28, 2017.
"TLC551 Datasheet" (PDF). Texas Instruments. September 1997. Archived (PDF) from the original on June 29, 2017.
"NE556 Datasheet" (PDF). Texas Instruments. June 2006. Archived (PDF) from the original on June 29, 2017.
"LM555 Datasheet" (PDF). Texas Instruments. January 2015. Archived (PDF) from the original on June 29, 2017.
"LM556 Datasheet" (PDF). Texas Instruments. October 2015. Archived from the original (PDF) on June 29, 2017.
"TLC552 Datasheet" (PDF). Texas Instruments. May 1988. Archived (PDF) from the original on June 29, 2017.
"TLC556 Datasheet" (PDF). Texas Instruments. September 1997. Archived (PDF) from the original on June 29, 2017.

investor.ti.com

"Texas Instruments completes acquisition of National Semiconductor". Texas Instruments. September 23, 2011. Archived from the original on May 22, 2020.

web.archive.org (Global: 1^st place; English: 1^st place)

"NE555 Datasheet" (PDF). Texas Instruments. September 2014. Archived (PDF) from the original on June 28, 2017.
"555/556 Timers Databook" (PDF). Signetics. 1973. Archived (PDF) from the original on May 11, 2021.
"ICM7555-556 Datasheet" (PDF). Intersil. June 2016. Archived from the original (PDF) on June 29, 2017.
"LMC555 Datasheet" (PDF). Texas Instruments. July 2016. Archived (PDF) from the original on June 28, 2017.
"TLC555 Datasheet" (PDF). Texas Instruments. August 2016. Archived (PDF) from the original on June 28, 2017.
"TLC551 Datasheet" (PDF). Texas Instruments. September 1997. Archived (PDF) from the original on June 29, 2017.
"NE556 Datasheet" (PDF). Texas Instruments. June 2006. Archived (PDF) from the original on June 29, 2017.
"LM555 Datasheet" (PDF). Texas Instruments. January 2015. Archived (PDF) from the original on June 29, 2017.
"555 Timer as Schmitt Trigger". Electronics Hub. June 19, 2015. Archived from the original on March 15, 2023.
"NJM555 Datasheet" (PDF). Japan Radio Company. November 2012. Archived from the original (PDF) on June 29, 2017.
"MIC1555 Datasheet" (PDF). Microchip Technology. March 2017. Archived (PDF) from the original on April 21, 2021.
"CSS555 Datasheet" (PDF). Custom Silicon Solutions. July 2012. Archived (PDF) from the original on June 29, 2017.
Senft, James (February 2016). "The Remarkable CSS555". Nuts & Volts Magazine. Archived from the original on May 27, 2020.
"ZSCT1555 Datasheet" (PDF). Diodes Incorporated. July 2006. Archived (PDF) from the original on June 29, 2017.
"MC1455 Datasheet" (PDF). ON Semiconductor. December 2009. Archived (PDF) from the original on May 22, 2020.
"TS555 Datasheet" (PDF). STMicroelectronics. June 2015. Archived (PDF) from the original on May 26, 2020.
"LM556 Datasheet" (PDF). Texas Instruments. October 2015. Archived from the original (PDF) on June 29, 2017.
"TLC552 Datasheet" (PDF). Texas Instruments. May 1988. Archived (PDF) from the original on June 29, 2017.
"TLC556 Datasheet" (PDF). Texas Instruments. September 1997. Archived (PDF) from the original on June 29, 2017.
"XTR655 Datasheet" (PDF). X-REL Semiconductor. August 2021. Archived (PDF) from the original on July 10, 2023.
"ON Semiconductor Successfully Completes Acquisition of Fairchild Semiconductor". Business Wire. September 19, 2016. Archived from the original on January 28, 2020.
"Former Motorola group emerges as ON Semiconductor". EE Times. August 5, 1999. Archived from the original on June 8, 2020.
"Renesas and Intersil Announce Final Regulatory Approval for Renesas' Acquisition of Intersil". Renesas Electronics. February 22, 2017. Archived from the original on June 13, 2020.
"Microchip Technology Completes Micrel Acquisition". Power Electronics. August 12, 2015. Archived from the original on May 22, 2020.
"Texas Instruments completes acquisition of National Semiconductor". Texas Instruments. September 23, 2011. Archived from the original on May 22, 2020.
"NXP Semiconductors history". Silicon Valley Historical Association. 2008. Archived from the original on March 21, 2020.
"Diodes Incorporated closes acquisition of Zetex". LEDs Magazine. June 13, 2008. Archived from the original on May 22, 2020.

worldcat.org (Global: 4^th place; English: 4^th place)

search.worldcat.org

Carmenzind, Hans (2010). "タイマIC 555 誕生秘話" [The birth of the 555 timer IC]. トランジスタ技術 [Transistor Technology] (in Japanese). 47 (12). Translated by 三宅, 和司. CQ出版: 73, 74. ISSN 0040-9413.
Kleitz, William (1990). Digital electronics : a practical approach (2nd ed.). Prentice Hall. p. 401. ISBN 0-13-211657-X. OCLC 20218185. The 555 got its name from the three 5-kOhm resistors
Simpson, Colin D. (1996). Industrial electronics. Prentice Hall. p. 357. ISBN 0-02-410622-4. OCLC 33014077. The reference voltage for the comparators is established by a voltage divider consisting of three 5 - k2 resistors, which is where the name 555 is derived
Horn, Delton (1994). Amplifiers, waveform generators, and other low-cost IC projects. New York: TAB Books. p. 27. ISBN 0-07-030415-7. OCLC 28676554. Not all functions are brought out to the 558's pins. This chip is designed primarily for monostable multivibrator applications

555 timer IC (English Wikipedia)

analog.com (Global: low place; English: low place)

archive.org (Global: 6th place; English: 6th place)

books.google.com (Global: 3rd place; English: 3rd place)

businesswire.com (Global: 828th place; English: 485th place)

circuitstoday.com (Global: low place; English: low place)

customsiliconsolutions.com (Global: low place; English: low place)

datasheetarchive.com (Global: low place; English: low place)

datasheet.datasheetarchive.com

diodes.com (Global: low place; English: low place)

diystompboxes.com (Global: low place; English: low place)

doi.org (Global: 2nd place; English: 2nd place)

easii-ic.com (Global: low place; English: low place)

eetimes.com (Global: 4,224th place; English: 2,761st place)

electronicshub.org (Global: low place; English: low place)

ieee.org (Global: 912th place; English: 722nd place)

spectrum.ieee.org

intersil.com (Global: low place; English: low place)

jameco.com (Global: low place; English: low place)

ledsmagazine.com (Global: low place; English: low place)

microchip.com (Global: low place; English: low place)

ww1.microchip.com

njr.com (Global: low place; English: low place)

nutsvolts.com (Global: low place; English: low place)

onsemi.com (Global: low place; English: low place)

powerelectronics.com (Global: low place; English: low place)

renesas.com (Global: low place; English: low place)

rfcafe.com (Global: low place; English: low place)

semanticscholar.org (Global: 15th place; English: 8th place)

api.semanticscholar.org

semiconductormuseum.com (Global: low place; English: low place)

siliconvalleyhistorical.org (Global: low place; English: low place)

st.com (Global: low place; English: low place)

ti.com (Global: 6,779th place; English: 4,625th place)

ti.com

investor.ti.com

web.archive.org (Global: 1st place; English: 1st place)

worldcat.org (Global: 4th place; English: 4th place)

search.worldcat.org

archive.org (Global: 6^th place; English: 6^th place)

books.google.com (Global: 3^rd place; English: 3^rd place)

businesswire.com (Global: 828^th place; English: 485^th place)

doi.org (Global: 2^nd place; English: 2^nd place)

eetimes.com (Global: 4,224^th place; English: 2,761^st place)

ieee.org (Global: 912^th place; English: 722^nd place)

semanticscholar.org (Global: 15^th place; English: 8^th place)

ti.com (Global: 6,779^th place; English: 4,625^th place)

web.archive.org (Global: 1^st place; English: 1^st place)

worldcat.org (Global: 4^th place; English: 4^th place)