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Dsub 25 pin connector
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mlyman89 3 years ago
Hello, can you tell me why the pin out of the dsub 25 pin male connector is different than the same connector in the female type? I’m looking at part# <span class="colour" style="color: rgb(51, 51, 51);">C77838, the female type, and, part# C75751, the male type. The male connector has pin 1 in the top right corner, and the female has it in the bottom right corner. If I were to use the standard dsub 25 pin breakout board to connect to this connector, will pin 1 correspond to what pin 1 is on the breakout board? I am just looking for some consistency when I go to hook up accessories to these pins. I’m not using these connectors to communicate serially, but as individual channels for different purposes. Thank you!</span>
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andyfierman 3 years ago
The pins are correctly oriented and numbered. Study the datasheets for: [https://lcsc\.com/product\-detail/D\-Sub\-Connectors\_CONNFLY\-Elec\-DS1037\-25FNAKT74\-0CC\_C77838\.html](https://lcsc.com/product-detail/D-Sub-Connectors_CONNFLY-Elec-DS1037-25FNAKT74-0CC_C77838.html) [https://lcsc\.com/product\-detail/D\-Sub\-Connectors\_CONNFLY\-Elec\-DS1037\-25MNAKT74\-0CC\_C75751\.html](https://lcsc.com/product-detail/D-Sub-Connectors_CONNFLY-Elec-DS1037-25MNAKT74-0CC_C75751.html)<br> <br> [https://datasheet\.lcsc\.com/lcsc/1811081022\_CONNFLY\-Elec\-DS1037\-25FNAKT74\-0CC\_C77838\.pdf](https://datasheet.lcsc.com/lcsc/1811081022_CONNFLY-Elec-DS1037-25FNAKT74-0CC_C77838.pdf) [https://datasheet\.lcsc\.com/lcsc/1811081022\_CONNFLY\-Elec\-DS1037\-25MNAKT74\-0CC\_C75751\.pdf](https://datasheet.lcsc.com/lcsc/1811081022_CONNFLY-Elec-DS1037-25MNAKT74-0CC_C75751.pdf)<br> <br> then put the two footprints together so that the mating sides face each other then study the pin positions. ![image.png](//image.easyeda.com/pullimage/SPjV5XwCQuH5VpUpGCAwADp59phk0Sjz57xAyqnl.png)![image.png](//image.easyeda.com/pullimage/hhGDkIWVdOm8SD5a6cOj019zkbTV2JZj0C2zAogJ.png)
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mlyman89 3 years ago
I see now. I figured that was the case, but it alluded me until you put the two together visually. Thank you.
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