[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-seo-670868-105":3,"detail-sidebar-cat-0-en-105":80,"doc-detail-670868-en":130},{"code":4,"msg":5,"data":6},0,"ok",{"site_id":7,"language":8,"slug":9,"title":10,"keywords":11,"description":12,"schema_data":13,"social_meta":73,"head_meta":75,"extra_data":77,"updated_unix":79},105,"en","lmc555-cmos-timer-product-datasheet","LMC555 CMOS Timer - Product Datasheet","","LMC555 is a CMOS, general-purpose 555 timer designed for accurate timing with lower power dissipation and reduced supply-current spikes. The device supports multiple modes including one-shot and astable operation, where delay, oscillation frequency, and duty cycle are set by external resistors and a capacitor. It extends the LMCMOS process for wider frequency range and low supply capability, and is available in several package options, including a compact DSBGA form factor.",{"@graph":14,"@context":72},[15,34,55],{"@type":16,"itemListElement":17},"BreadcrumbList",[18,23,27,31],{"item":19,"name":20,"@type":21,"position":22},"https://docshare.wps.com","Home","ListItem",1,{"item":24,"name":25,"@type":21,"position":26},"https://docshare.wps.com/document/","Document",2,{"item":28,"name":29,"@type":21,"position":30},"https://docshare.wps.com/document/technology/","Technology",3,{"item":32,"name":10,"@type":21,"position":33},"https://docshare.wps.com/document/lmc555-cmos-timer-product-datasheet/670868/",4,{"url":32,"name":10,"@type":35,"image":36,"author":41,"headline":10,"publisher":44,"fileFormat":47,"inLanguage":8,"description":12,"dateModified":48,"datePublished":49,"encodingFormat":47,"isAccessibleForFree":50,"interactionStatistic":51},"DigitalDocument",{"url":37,"@type":38,"width":39,"height":40},"https://docshare.wps.com/thumbnails/lmc555-cmos-timer-product-datasheet/670868.png","ImageObject",300,407,{"name":42,"@type":43},"Ezra","Person",{"url":19,"name":45,"@type":46},"DocShare","Organization","application/pdf","2026-11-02","2026-11-01",true,{"@type":52,"interactionType":53,"userInteractionCount":26},"InteractionCounter",{"@type":54},"ViewAction",{"@type":56,"mainEntity":57},"FAQPage",[58,64,68],{"name":59,"@type":60,"acceptedAnswer":61},"What are the key operating modes of the LMC555?","Question",{"text":62,"@type":63},"The LMC555 supports one-shot operation and astable mode. One-shot timing is controlled by a single external resistor and capacitor, while astable frequency and duty cycle are set by two external resistors and one capacitor.","Answer",{"name":65,"@type":60,"acceptedAnswer":66},"How is the timing parameters determined in one-shot and astable modes?",{"text":67,"@type":63},"In one-shot mode, a single external resistor and capacitor precisely control the time delay. In astable mode, oscillation frequency and duty cycle are accurately set by two external resistors and one capacitor.",{"name":69,"@type":60,"acceptedAnswer":70},"What external components or wiring considerations relate to the reset and threshold pins?",{"text":71,"@type":63},"The reset pin requires a negative pulse to disable or reset the timer, and when not used for reset it should be connected to V+ to avoid false triggering. The threshold pin compares the applied voltage to control the timing transitions.","https://schema.org",{"og:url":32,"og:type":74,"og:title":10,"og:site_name":45,"og:description":12},"article",{"robots":76,"canonical":32},"index,follow",{"doc_id":78,"site_id":7},670868,1793572434,{"code":4,"msg":81,"data":82},"success",[83,87,91,95,100,104,109,114,119,122,126],{"id":22,"doc_module":4,"doc_module_name":25,"category_name":84,"show_sort_weight":85,"slug":86},"Story & Novel",90,"story-novel",{"id":26,"doc_module":4,"doc_module_name":25,"category_name":88,"show_sort_weight":89,"slug":90},"Literature",80,"literature",{"id":33,"doc_module":4,"doc_module_name":25,"category_name":92,"show_sort_weight":93,"slug":94},"Exam",70,"exam",{"id":96,"doc_module":4,"doc_module_name":25,"category_name":97,"show_sort_weight":98,"slug":99},5,"Comic",60,"comic",{"id":101,"doc_module":4,"doc_module_name":25,"category_name":29,"show_sort_weight":102,"slug":103},6,50,"technology",{"id":105,"doc_module":4,"doc_module_name":25,"category_name":106,"show_sort_weight":107,"slug":108},7,"Healthcare",40,"healthcare",{"id":110,"doc_module":4,"doc_module_name":25,"category_name":111,"show_sort_weight":112,"slug":113},8,"Research & Report",30,"research-report",{"id":115,"doc_module":4,"doc_module_name":25,"category_name":116,"show_sort_weight":117,"slug":118},9,"Religion & Spirituality",20,"religion-spirituality",{"id":117,"doc_module":4,"doc_module_name":25,"category_name":120,"show_sort_weight":117,"slug":121},"World Cup","world-cup",{"id":123,"doc_module":4,"doc_module_name":25,"category_name":124,"show_sort_weight":123,"slug":125},10,"Lifestyle","lifestyle",{"id":127,"doc_module":4,"doc_module_name":25,"category_name":128,"show_sort_weight":96,"slug":129},19,"General","general",{"code":4,"msg":81,"data":131},{"doc_id":78,"user_id":132,"nickname":42,"user_avatar":133,"doc_module":4,"category_id":101,"category_name":29,"doc_title":10,"doc_description":12,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":26,"is_deleted":4,"is_public":22,"is_downloadable":22,"audit_status":22,"page_count":139,"language":140,"language_code":8,"site_id":7,"html_lang":8,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":12,"update_tm":79,"read_time":144},1099514068035,"https://ap-avatar.wpscdn.com/davatar_276721f389ce27ea32af1340a28f341c","LMC555  \nSNAS558N – JANUARY 2000 – REVISED MARCH 2024  \nLMC555 CMOS Timer  \n1 Features  \n• Fast astable frequency of 3MHz  \n• Available in industry's smallest 8-bump DSBGA package (1 .43mm × 1.41mm)  \n• Less than 1mW typical power dissipation at 5V supply  \n• 1.5V specified supply operating voltage  \n• output fully compatible with TTL and CMOS logic at 5V supply  \n• Tested to −10mA, 50mA output current levels  \n• Reduced supply current spikes during output transitions  \n• Extremely low reset, trigger, and threshold currents • Excellent temperature stability  \n• Pin-for-pin compatible with 555 series of timers  \n2 Applications  \n• Precision timing  \n• Pulse generation  \n• Sequential timing  \n• Time delay generation  \n• Pulse width modulation  \n• Pulse position modulation  \n• Linear ramp generators  \n3 Description  \nThe LMC555 device is a CMOS version of the industry standard 555 series general-purpose timers. In addition to the standard SOIC, VSSSOP, and PDIP packages, the LMC555 is also available in a chipsized, 8-bump DSBGA package using TI's DSBGA package technology. The LMC555 offers the same capability of generating accurate time delays and frequencies as the LM555, but with much lower power dissipation and supply current spikes. When operated as a one-shot, the time delay is precisely controlled by a single external resistor and capacitor. In astable mode, the oscillation frequency and duty cycle are accurately set by two external resistors and one capacitor. TI's LMCMOS process extends both the frequency range and the low supply capability.  \nPackage Information  \n\n| PART NUMBER | PACKAGE(1) | PACKAGE SIZE(2) |\n| --- | --- | --- |\n| LMC555 | D (SOIC, 8) | 4.9mm × 6mm |\n|  | DGK (VSSOP, 8) | 3mm × 4.9mm |\n|  | P (PDIP, 8) | 9.81mm × 9.43mm |\n|  | YBF (DSBGA, 8) | 1.75mm × 1.75mm |\n\n(1) For more information, see Section 11.  \n(2) The package size (length × width) is a nominal value and includes pins, where applicable.  \nPulse Width Modulator  \nPulse Width Modulator Waveform: Top Waveform—Modulation Bottom Waveform—Output Voltage  \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....................................................4  \n5.5 Electrical Characteristics.............................................5  \n5.6 Switching Characteristics............................................5  \n6 Parameter Measurement Information............................ 6  \n7 Detailed Description........................................................7  \n7.1 Overview..................................................................... 7  \n7.2 Functional Block Diagram........................................... 7  \n7.3 Feature Description.....................................................8  \n7.4 Device Functional Modes............................................9  \n8 Application and Implementation.................................. 12  \n8.1 Application Information............................................. 12  \n8.2 Typical Applications.................................................. 12  \n8.3 Power Supply Recommendations............................. 17  \n8.4 Layout........................................","cbCaigXFpDfRIO8d","https://ap.wps.com/l/cbCaigXFpDfRIO8d","pdf",1526086,35,"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# 6 Parameter Measurement Information\n# 7 Detailed Description\n## 7.1 Overview\n## 7.2 Functional Block Diagram\n## 7.3 Feature Description\n## 7.4 Device Functional Modes\n# 8 Application and Implementation\n## 8.1 Application Information\n## 8.2 Typical Applications\n## 8.3 Power Supply Recommendations\n## 8.4 Layout\n# 9 Device and Documentation Support\n## 9.1 Receiving Notification of Documentation Updates\n## 9.2 Support Resources\n## 9.3 Trademarks\n## 9.4 Electrostatic Discharge Caution\n## 9.5 Glossary\n# 10 Revision History\n# 11 Mechanical, Packaging, and Orderable Information","[{\"question\":\"What are the key operating modes of the LMC555?\",\"answer\":\"The LMC555 supports one-shot operation and astable mode. One-shot timing is controlled by a single external resistor and capacitor, while astable frequency and duty cycle are set by two external resistors and one capacitor.\"},{\"question\":\"How is the timing parameters determined in one-shot and astable modes?\",\"answer\":\"In one-shot mode, a single external resistor and capacitor precisely control the time delay. In astable mode, oscillation frequency and duty cycle are accurately set by two external resistors and one capacitor.\"},{\"question\":\"What external components or wiring considerations relate to the reset and threshold pins?\",\"answer\":\"The reset pin requires a negative pulse to disable or reset the timer, and when not used for reset it should be connected to V+ to avoid false triggering. The threshold pin compares the applied voltage to control the timing transitions.\"}]","LMC555 CMOS Timer - Product Datasheet | PDF",88]