In embedded systems, the communication means the exchange of data between two microcontrollers in the form of bits. The communication is very well known terminology which involves the exchange of information between two or more mediums.
Serial connector types serial#
They are still widely used, but Db connectors are on the decline.Before starting with Serial Communication Protocols, Let’s break the terminology in three parts. In any case this is an out-dated style of connector. Related page Military Connector SpecificationsĮditor note I think MIL-C-24308 has been withdrawn and replaced by MIL-DTL-24308. Military D-Sub Connector manufacturers, Mil-C-24308, listing companies that manufacturer Dsub connectors. DTL stands for Detail Specification Sheet RoHS: Restriction of Hazardous Substances SMD: Surface Mount Device SMT: Surface Mount Technology THR: Thru Hole Reflow, 'Pin in Paste'ĭ-Subminiature connectors are listed on the following pages Commercial D-Sub Connector manufacturers page. The older SVGA ports replaced by DVI, or DisplayPort interfaces.ĭ-Sub Connector Terms: HD: High Density Filtered: Suppress electro-magnetic interference (EMI) or radio frequency (RFI) High Density, HD: Pack 3 rows of pins into the next smaller 2-row shell size, 15-pins into a 9 pin shell size IDC: Insulation Displacement Connection IEC: (International Electrotechnical Commission) ~ an International Standards Body MIL: Military, as in Department of Defense Standard 'DOD' MIL-C-24308: Connectors, Electrical, Rectangular, Miniature, Polarized Shell, Rack and Reel, Shield, Straight, Deep MIL-DTL-24308 A sub-standard of MIL-C-24308. The serial and parallel port connectors have been replaced by USB connectors. Many new PCs no longer use Dsub connectors, Note that most people just use the term 'DB' DB9, DB15, DB25. Solder Cup D-Sub Connector Discrete Wire Types of DSub Shell Sizes Standard Densityĭ-Sub connector common usage in personal computers ĩ-pin DE D-Sub connectors are used as an RS232 Serial portġ5-pin DA D-Sub connectors are used as an SVGA Video portĢ5-pin DB D-Sub connectors are used as a parallel / printer port Crimp Snap-in D-Sub Connector Discrete Wire Wire Wrap D-Sub Connector: Solder-less Cable D-Sub Connectors: Dual Port Two connectors stacked together How to count the pins of a Dsub D-Sub Connector Insert Arrangements With each row of pins requiring more board space. Note the amount of space a Dsub takes up on a printed circuit board depends on its placement.Ī right angle connector will require a footprint determined by the number of pins in the connector. High Density 'HD' (size 22 contacts):15, 26, 44, 62, 78, and 104 pins Power 3W3, 3WK3, 5W5, 8W8 3, 5, 8 single row High Power Contacts Physical Connector Dimensions by Shell Size Shell size 6 is used with the 104 pin D connector. Shell size 5 is used with the 50 pin D and the 78 pin D connectors. Shell size 4 is used with the 37 pin D and the 62 pin D connectors. Shell size 3 is used with the 25 pin D and the 44 pin D connectors. Shell size 2 is used with the standard density 15 pin D and the 26 pin D connectors. Shell size 1 is used with the 9 pin D and the high density 15 pin D connectors. Use the table below to obtain the absolute shell dimensions based on the size and number of pins used with the connector. The graphic above gives the mechanical dimensions for a D-Subminiature connector. The term commonly used for this style is D-Sub connectors, or just Dsub. This page provides the physical out-line and Mechanical Dimensions for all the different styles of Subminiature D connectors.
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