[{"data":1,"prerenderedAt":78},["ShallowReactive",2],{"connector:db9-rs232:en":3},{"connector":4,"prose":73,"confirmations":77},{"schemaVersion":5,"governance":6,"meta":18,"pins":36},"1.0.0",{"publication":7,"verification":10,"provenance":15},{"status":8,"publishedDate":9},"published","2026-09-26",{"status":11,"verifiedDate":9,"verifiedBy":12,"checklist":13},"verified","Claude (LLM review against cited primary sources)",{"schema":14,"technicalFacts":14,"relationships":14,"sources":14},true,{"sourceUrls":16},[17],"https:\u002F\u002Fwww.ti.com\u002Flit\u002Fan\u002Fslla037a\u002Fslla037a.pdf",{"slug":19,"name":20,"title":21,"standard":22,"positionCount":23,"layout":24,"category":25,"source":26,"specs":32,"overview":34},"db9-rs232","DE-9 \u002F DB-9 RS-232 Serial Port","DE-9 (DB-9) Serial RS-232 Male and Female D-Sub Pinout","TIA\u002FEIA-232 (DE-9, DTE)",9,"trapezoid","serial",[27],{"label":28,"url":17,"authority":29,"documentType":30,"publisher":31},"Texas Instruments SLLA037A, Interface Circuits for TIA\u002FEIA-232-F (Sept. 2002)","primary","manufacturer_documentation","Texas Instruments",{"standard":33,"positions":23},"D-Subminiature 9-Pin",{"summaryKey":35},"connectors.db9.summary",[37,41,45,49,53,58,62,66,70],{"n":38,"category":25,"signal":39,"role":40,"standardized":14},1,"DCD","Data Carrier Detect: DCE tells the DTE it receives a valid carrier (input at the DTE)",{"n":42,"category":25,"signal":43,"role":44,"standardized":14},2,"RXD","Receive Data: serial data from DCE to DTE (input at the DTE)",{"n":46,"category":25,"signal":47,"role":48,"standardized":14},3,"TXD","Transmit Data: serial data from DTE to DCE (output at the DTE)",{"n":50,"category":25,"signal":51,"role":52,"standardized":14},4,"DTR","Data Terminal Ready: DTE ready to communicate (output at the DTE)",{"n":54,"category":55,"signal":56,"role":57,"standardized":14},5,"gnd","GND","Signal Ground: common reference for all circuits, separate from protective (chassis) ground",{"n":59,"category":25,"signal":60,"role":61,"standardized":14},6,"DSR","Data Set Ready: DCE connected and ready (input at the DTE)",{"n":63,"category":25,"signal":64,"role":65,"standardized":14},7,"RTS","Request To Send: DTE ready to transmit, hardware flow control (output at the DTE)",{"n":67,"category":25,"signal":68,"role":69,"standardized":14},8,"CTS","Clear To Send: DCE ready to receive, hardware flow control (input at the DTE)",{"n":23,"category":25,"signal":71,"role":72,"standardized":14},"RI","Ring Indicator: DCE signals incoming ringing (input at the DTE)",{"description":74,"card":75,"intro":76},"DE-9 (DB-9) RS-232 serial port pinout for the PC (DTE) side: TXD, RXD, RTS\u002FCTS, DTR\u002FDSR, DCD, RI and signal ground, with the direction of every signal.","Nine-position D-sub connector for standardized RS-232 serial signals.","The nine-position D-sub connector carries the RS-232 data, handshake and ground signals of a PC serial port. Select a contact to see its signal and whether it is an input or an output at the DTE.",null,1791754291259]