[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-670870-105":59,"doc-detail-670870-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","ne555sa555na555-precision-timers","NE555/SA555/NA555 - Precision Timers","","NE555/SA555/NA555 precision timer devices are designed for accurate timing delays and oscillation. In timedelay (monostable) mode, a single external resistor and capacitor network sets the interval. In astable mode, two external resistors independently control frequency and duty cycle while one external capacitor determines timing. Threshold and trigger levels default to two-thirds and one-third of VCC, configurable via the control-voltage terminal. Output can sink or source up to 200 mA across 5 V to 15 V supplies and is compatible with TTL inputs at 5 V.",{"@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/ne555sa555na555-precision-timers/670870/",{"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/ne555sa555na555-precision-timers/670870.png","ImageObject",300,407,{"name":92,"@type":93},"Asher","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 NE555/SA555/NA555 devices generate timing in monostable mode?","Question",{"text":112,"@type":113},"In the timedelay (monostable) mode, the timed interval is controlled by a single external resistor and capacitor network.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How are frequency and duty cycle controlled in astable mode?",{"text":117,"@type":113},"In astable mode, frequency and duty cycle can be controlled independently with two external resistors and one external capacitor.",{"name":119,"@type":110,"acceptedAnswer":120},"What are the typical threshold and trigger level relationships to VCC?",{"text":121,"@type":113},"Normally, the threshold level is two-thirds of VCC and the trigger level is one-third of VCC, and these can be altered using the control-voltage terminal.","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},670870,1793572436,{"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},687197207639,"https://ap-avatar.wpscdn.com/davatar_a8503ba1806abce46bf441b54a3ca4cd","NEW PRODUCT  \nNE555/SA555/NA555  \nPRECISION TIMERS  \n\n| Description |\n| --- |\n| These devices are precision timing circuits capable of producing accurate time delays or oscillation. In the timedelay or monostable mode of operation, the timed interval is controlled by a single external resistor and capacitor network. In the astable mode of operation, the frequency and duty cycle can be controlled independently with two external resistors and a single external capacitor.\u003Cbr>The threshold and trigger levels normally are two-thirds and one-third, respectively, of V CC. These levels can be altered by use of the control-voltage terminal. When the trigger input falls below the trigger level, the flip-flop is set, and the output goes high. If the trigger input is above the trigger level and the threshold input is above the threshold level, the flip-flop is reset and the output is low. The reset (RESET) input can override all other inputs and can be used to initiate a new timing cycle. When RESET goes low, the flip-flop is reset, and the output goes low. When the output is low, a lowimpedance path is provided between discharge (DISCH) and ground.\u003Cbr>The output circuit is capable of sinking or sourcing current up to 200mA. Operation is specified for supplies of 5V to 15V. With a 5-V supply, output levels are compatible with TTL inputs. |\n| Features |\n\n• Timing from microseconds to hours  \n• Astable or monostable operation  \n• Adjustable duty cycle  \n• TTL compatible output can source or sink up to 200mA  \n• “Green” Molding Compound (No Br, Sb)  \n• Lead Free Finish/ RoHS Compliant (Note 1)  \nNotes: 1. EU Directive 2002/95/EC (RoHS) . All applicable RoHS exemptions applied. Please visit our website at [http://www.diodes.com/products/lead_free.html](http://www.diodes.com/products/lead_free.html).  \nNE555/SA555/NA555  \nDocument number: DS35112 Rev. 4-2  \n1 of 14  \n[www.diodes.com](www.diodes.com)  \nFebruary 2012 © Diodes Incorporated  \nNEW PRODUCT  \nNE555/SA555/NA555  \nPRECISION TIMERS  \nPin Descriptions  \n\n| Pin Name | Pin Number | Description |\n| --- | --- | --- |\n| GND | 1 | Ground |\n| TRIG | 2 | Trigger set 1/3V CC |\n| OUT | 3 | Timer output |\n| RESET | 4 | Reset active low |\n| CONT | 5 | External adjustment of internal threshold and trigger voltages |\n| THRES | 6 | Threshold set to 2/3 V CC |\n| DISCH | 7 | Low impedance discharge path |\n| V CC | 8 | Chip supply voltage |\n\nFunctional Block Diagram  \nRESET can override TRIG, which can override THRESH  \nFunctional Table  \n\n| Pin Name | Nominal Trigger Voltage | Threshold Voltage | Output | Discharge Switch |\n| --- | --- | --- | --- | --- |\n| GND | Irrelevant | Irrelevant | Low | On |\n| TRIG | \u003C1/3V CC | Irrelevant | High | Off |\n| OUT | \u003C1/3V CC | \u003C2/3V CC | Low | On |\n| RESET | \u003C1/3V CC | \u003C2/3V CC | As previously established |  |\n\nNE555/SA555/NA555  \nDocument number: DS35112 Rev. 4-2  \n2 of 14  \n[www.diodes.com](www.diodes.com)  \nFebruary 2012 © Diodes Incorporated  \nNEW PRODUCT  \nNE555/SA555/NA555  \nPRECISION TIMERS  \nAbsolute Maximum Ratings (Note 2) @ TA = 25°C unless otherwise stated  \n\n| Symbol | Parameter |  | Rating | Unit |\n| --- | --- | --- | --- | --- |\n| V CC | Supply voltage (Note 3) |  | 18 | V |\n| VI | Input voltage | CONT, RESET, THRES, TRIG | V CC | V |\n| IO | Output current |  | ±225 | mA |\n| θJA | Package thermal resistance Junction-to-Ambient (Note 4) |  | 130 | °C/W |\n| θJC | Package thermal resistance Junction-to-Case (Note 5) |  | 15 | °C/W |\n| TJ | Junction temperature |  | 150 | °C |\n| TSTG | Storage temperature |  | -65 to 150 | °C |\n\nRecommended Operating Conditions (TA = 25°C)  \n\n| Symbol | Parameter |  | Min | Max | Unit |\n| --- | --- | --- | --- | --- | --- |\n| V CC | Supply voltage |  | 4.5 | 16 | V |\n| VI | Input voltage | CONT, RESET, THRES, TRIG |  | V CC | V |\n| IO | Output current |  |  | ±200 | mA |\n| TA | Operating Ambient Temperature | NE555 | 0 | 70 | °C |\n|  |  | SA555 | -40 | 85 |  |\n|  |  | NA555 | -40 | 105 |  |\n\nNotes: 2. Stresses beyond those ","cbCaio4n74KAe3hU","https://ap.wps.com/l/cbCaio4n74KAe3hU","pdf",741686,14,"English","# Overview\n## Features\n# Pin Descriptions\n# Functional Block Diagram and Functional Table\n# Absolute Maximum Ratings\n# Recommended Operating Conditions\n# Electrical Characteristics","[{\"question\":\"How do NE555/SA555/NA555 devices generate timing in monostable mode?\",\"answer\":\"In the timedelay (monostable) mode, the timed interval is controlled by a single external resistor and capacitor network.\"},{\"question\":\"How are frequency and duty cycle controlled in astable mode?\",\"answer\":\"In astable mode, frequency and duty cycle can be controlled independently with two external resistors and one external capacitor.\"},{\"question\":\"What are the typical threshold and trigger level relationships to VCC?\",\"answer\":\"Normally, the threshold level is two-thirds of VCC and the trigger level is one-third of VCC, and these can be altered using the control-voltage terminal.\"}]","NE555/SA555/NA555 - Precision Timers | PDF",35]