Serial Converters & Extenders

Serial converters and extenders are useful pieces of hardware designed to transfer data from a host computer to peripheral devices. Sometimes this involves a single cable to transfer data, for more specialist reasons, hubs are used to connect multiple serial outputs. Extenders stretch and maintain transfer rates over longer than normal distances.





How do serial converters work?





Whether the converter has a 9-pin or 25-pin connection, each pin has a specific job to allow data to be transferred. Serial connections work by transferring one byte of data at a time sequentially and are preceded with a start bit ’0’ and proceeded with a stop bit. This is in contrast with parallel connection where multiple bits of data can be transferred at the same time.





How do you use a serial converter?





Most common applications of COM ports are in point of sale systems (cash registers, bar code scanners etc.) and some medical equipment. Using a single cable to connect these devices is simple, plug one end into the host computer and the other into the peripheral device. If using a hub, software is usually needed to be downloaded before connecting any appliances.





What types are of serial converters and extenders are there?





Serial converters have been an integral part of computing for 20 years and so a lot of serial devices like modems and printers, which are perfectly functionable, remain with these older connection types.





New types of connections have been developed and an adapter usually has a USB end to connect to modern computers. They're commonly referred to as USB-to-Serial.





Serial connections can be split into two categories; serial connectors and serial ports. The most common types are listed below:





Serial ports:







  • RS-485

  • RS-422

  • RS-232

  • LIN (Local Interface Network)

  • SPI (Serial Peripheral Interface)

  • I2C

  • I2S

  • SMBus





Serial connectors:






  • 9-pin DB-9

  • 25-pin DB-25





RS Components feature a generous range of video converters, supplied by leading brands such as StarTech, FTDI Chip, and of course our trusted own brand RS Pro.


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Description Price Input Port Bus Type Output Port Number of Ports Maximum Baud Rate
RS Stock No. 784-0091
BrandRS PRO
£91.79
Each
Units
- - - - -
RS Stock No. 144-5699
BrandRS PRO
£14.65
Each
Units
- - - - -
RS Stock No. 144-8615
BrandRS PRO
£16.67
Each
Units
- - - - -
RS Stock No. 687-7834
Mfr. Part No.USB-RS485-WE-1800-BT
BrandFTDI Chip
£25.63
Each
Units
- - - - -
RS Stock No. 760-8711
Mfr. Part No.CHIPI-X10
BrandFTDI Chip
£13.62
Each
Units
- - - - -
RS Stock No. 272-860
Mfr. Part No.UC232A USB-RS232
BrandMitsubishi
£40.78
Each
Units
- - - - -
RS Stock No. 429-252
Mfr. Part No.UC232R-10
BrandFTDI Chip
£15.21
Each
Units
- - - - -
RS Stock No. 687-7806
Mfr. Part No.US232R-100-BLK
BrandFTDI Chip
£19.38
Each
Units
USB - RS232 - -
RS Stock No. 429-274
Mfr. Part No.US232R-10
BrandFTDI Chip
£18.15
Each
Units
- - - - -
RS Stock No. 687-7828
Mfr. Part No.USB-RS232-WE-1800-BT 0.0
BrandFTDI Chip
£18.88
Each
Units
- - - - -
RS Stock No. 877-7240
Mfr. Part No.US-235
BrandBrainboxes
£46.14
Each
Units
- - - - -
RS Stock No. 687-7831
Mfr. Part No.USB-RS422-WE-1800-BT
BrandFTDI Chip
£29.63
Each
Units
- - - - -
RS Stock No. 687-7803
Mfr. Part No.UT232R-200-BLK
BrandFTDI Chip
£25.51
Each
Units
USB - RS232 - -
RS Stock No. 730-0164
Mfr. Part No.USB-RS485-WE-5000-BT
BrandFTDI Chip
£35.38
Each
Units
- - - - -
RS Stock No. 777-924
BrandRoline
£48.05
Each
Units
- - - - -
RS Stock No. 877-7244
Mfr. Part No.US-320
BrandBrainboxes
£67.16
Each
Units
- - - - -
RS Stock No. 448-831
Mfr. Part No.ADAM-4521
BrandAdvantech
£144.62
Each
Units
- - - - -
RS Stock No. 255-9762
BrandRoline
£90.10
Each
Units
- - - - -
RS Stock No. 688-3321
Mfr. Part No.US-101
BrandBrainboxes
£44.62
Each
Units
- - - - -
RS Stock No. 687-7812
Mfr. Part No.UT232R-500-BLK
BrandFTDI Chip
£32.21
Each
Units
- - - - -