[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-670867-105":59,"doc-detail-670867-en":130},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":123,"head_meta":125,"extra_data":127,"updated_unix":129},105,"en","xx555-precision-timers-sept-1973-revised-march-2026","xx555 Precision Timers - Sept 1973 Revised March 2026","","Precision timer circuits in the NA555, NE555, SA555 and SE555 families, using TTL-compatible, high-current outputs capable of sinking or sourcing up to 200mA. Timing supports microseconds to hours with astable or monostable operation, adjustable duty cycle, and selectable trigger/threshold levels derived from supply voltage. External resistor/capacitor networks set delays and oscillation frequency, while RESET initiates new timing cycles and overrides other inputs. Includes applications, pin functions, electrical characteristics, switching and thermal information.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":30,"@type":76,"position":81},"https://docshare.wps.com/document/technology/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/xx555-precision-timers-sept-1973-revised-march-2026/670867/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/xx555-precision-timers-sept-1973-revised-march-2026/670867.png","ImageObject",300,407,{"name":92,"@type":93},"Liam","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-11-02","2026-11-01",true,{"@type":102,"interactionType":103,"userInteractionCount":14},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"How do NA555/NE555/SA555/SE555 control timing in monostable and astable modes?","Question",{"text":112,"@type":113},"In monostable or time-delay modes, the timed interval is set by a single external resistor and capacitor network. In astable mode, frequency and duty cycle are set independently using two external resistors plus one external capacitor.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"What are the trigger and threshold levels, and how can they be changed?",{"text":117,"@type":113},"The trigger level is approximately one-third of the supply voltage and the threshold level is approximately two-thirds. These levels can be altered via the control voltage pin (CONT).",{"name":119,"@type":110,"acceptedAnswer":120},"What is the role of RESET and the DISCH pin behavior?",{"text":121,"@type":113},"RESET overrides all other inputs to initiate a new timing cycle; when RESET is low, the flip-flop is reset and the output is low. Whenever the output is low, a low-impedance path connects the discharge pin (DISCH) to ground (GND).","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},670867,1793572392,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":29,"category_name":30,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":14,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":129,"read_time":144},8796095461564,"https://ap-avatar.wpscdn.com/davatar_155a257f0dc6eb9ab79c44ca47cae57d","NA555, NE555, SA555, SE555  \nSLFS022K – SEPTEMBER 1973 – REVISED MARCH 2026  \nxx555 Precision Timers  \n1 Features  \n• Timing from microseconds to hours  \n• Astable or monostable operation  \n• Adjustable duty cycle  \n• TTL-compatible output can sink or source up to 200mA  \n• On products compliant to MIL-PRF-38535, all parameters are tested unless otherwise noted. On all other products, production processing does not necessarily include  \ntesting of all parameters.  \n2 Applications  \n• Pulse-shaping circuits  \n• Missing-pulse detectors  \n• Pulse-width modulators  \n• Pulse-position modulators  \n• Sequential timers  \n• Pulse generators  \n• Frequency dividers  \n• Industrial controls  \nSimplified Schematic  \n3 Description  \nThe Nx555 and Sx555 devices are precision timing circuits capable of producing accurate time delays or oscillation. In time-delay or monostable operating modes, the timed interval is controlled by a single external resistor and capacitor network. In the astable mode of operation, the frequency and duty cycle are controlled independently with two external resistors and a single external capacitor.  \nEach timer has a trigger level equal to approximately one-third of the supply voltage and a threshold level equal to approximately two-thirds of the supply voltage. These levels can be altered by use of the control voltage pin (CONT) . When the trigger input (TRIG) is less than the trigger level, the flip-flop is set and the output goes high. If TRIG is greater than the trigger level and the threshold input (THRES) is greater than the threshold level, the flip-flop is reset and the output is low. The reset input (RESET) overrides all other inputs and is used to initiate a new timing cycle. If RESET is low, the flip-flop is reset and the output is low. Whenever the output is low, a lowimpedance path is provided between the discharge pin (DISCH) and the ground pin (GND) . Tie all unused inputs to an appropriate logic level to prevent false triggering  \nThe output circuit is capable of sinking or sourcing current up to 200mA. Operation is specified for supplies of 5V to 15V. With a 5V supply, output levels are compatible with TTL inputs.  \nDevice Information  \n\n| PART NUMBER | OPERATING\u003Cbr>TEMPERATURE | PACKAGE(1) |\n| --- | --- | --- |\n| NA555 | TA = –40°C to +105°C | D (SOIC, 8) |\n|  |  | P (PDIP, 8) |\n| NE555 | TA = 0°C to 70°C | D (SOIC, 8) |\n|  |  | P (PDIP, 8) |\n|  |  | PS (SO, 8) |\n|  |  | PW (TSSOP, 8) |\n| SA555 | TA = –40°C to +85°C | D (SOIC, 8) |\n|  |  | P (PDIP, 8) |\n| SE555 | TA = –55°C to +125°C | D (SOIC, 8) |\n|  |  | FK (LCCC, 20) |\n|  |  | JG (CDIP, 8) |\n|  |  | P (PDIP, 8) |\n\n(1) For more information, see Section 10.  \nAn IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA.  \nTable of Contents  \n1 Features............................................................................ 1  \n2 Applications..................................................................... 1  \n3 Description....................................................................... 1  \n4 Pin Configuration and Functions...................................3  \n5 Specifications.................................................................. 4  \n5.1 Absolute Maximum Ratings........................................ 4  \n5.2 ESD Ratings............................................................... 4  \n5.3 Recommended Operating Conditions.........................4  \n5.4 Thermal Information....................................................5  \n5.5 Electrical Characteristics.............................................5  \n5.6 Switching Characteristics............................................7  \n5.7 Typical Characteristics................................................ 8  \n6 Detailed Description...................................................... 10  \n6.1 Overview......................","cbCaifx9UNYBDCw6","https://ap.wps.com/l/cbCaifx9UNYBDCw6","pdf",2258813,39,"English","# 1 Features\n# 2 Applications\n# 3 Description\n# 4 Pin Configuration and Functions\n# 5 Specifications\n## 5.1 Absolute Maximum Ratings\n## 5.2 ESD Ratings\n## 5.3 Recommended Operating Conditions\n## 5.4 Thermal Information\n## 5.5 Electrical Characteristics\n## 5.6 Switching Characteristics\n## 5.7 Typical Characteristics\n# 6 Detailed Description\n## 6.1 Overview\n## 6.2 Functional Block Diagram\n## 6.3 Feature Description\n## 6.4 Device Functional Modes\n# 7 Applications and Implementation\n## 7.1 Application Information\n## 7.2 Typical Applications\n## 7.3 Power Supply Recommendations\n# 8 Device and Documentation Support\n## 8.1 Receiving Notification of Documentation Updates\n## 8.2 Support Resources\n## 8.3 Trademarks\n## 8.4 Electrostatic Discharge Caution\n## 8.5 Glossary\n# 9 Revision History\n# 10 Mechanical, Packaging, and Orderable Information","[{\"question\":\"How do NA555/NE555/SA555/SE555 control timing in monostable and astable modes?\",\"answer\":\"In monostable or time-delay modes, the timed interval is set by a single external resistor and capacitor network. In astable mode, frequency and duty cycle are set independently using two external resistors plus one external capacitor.\"},{\"question\":\"What are the trigger and threshold levels, and how can they be changed?\",\"answer\":\"The trigger level is approximately one-third of the supply voltage and the threshold level is approximately two-thirds. These levels can be altered via the control voltage pin (CONT).\"},{\"question\":\"What is the role of RESET and the DISCH pin behavior?\",\"answer\":\"RESET overrides all other inputs to initiate a new timing cycle; when RESET is low, the flip-flop is reset and the output is low. Whenever the output is low, a low-impedance path connects the discharge pin (DISCH) to ground (GND).\"}]","xx555 Precision Timers - Sept 1973 Revised March 2026 | PDF",98]