A Complete Guide to DB Style Connectors & Cables

A Complete Guide to DB Style
Connectors & Cables
Originally known as ‘​D-subminiature​’ DB style connectors are common UFD
connectors or say monitor cables which operate in computing devices,
audio/video, and data applications. DB25 and DB9 serial cables are the
renowned types of D-sub connectors, used in PCs for serial and parallel
ports.
The High-Density DB style is another type of D-sub connector which looks
like a regular DB connector. Often called ‘HD’ connectors they have three
rows of pins instead of two. HD15 is the most common type of connector
used for video cards and monitors.
Micro DB connector comes with smaller pins than the HD connector pins. It
is commonly known as a ‘half-pitch’ DB connector. Majorly, SCSI
applications use them. MD50 and MD68 are the most popular connections
types.
The D-sub connectors’ names are equivalent with the total number of pins
that they can hold. For example, DB9 Series Cables contain 9 pins.
However, in some cases, a DB25 connector has 4 to 5 loaded pins. Another
product is the HD15 connector used by monitors. In most cases, ​monitor
cables​ contains 14 pins but still called an HD15 connector.
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To know all about the ins and outs of the DB connectors, you can refer the
detailed guide we have prepare for you.
Scroll down to learn more!
DB9 Connectors
These types of connectors have 9 pins arranged in two rows. The first 5
pins are in the top and 4 pins in the bottom row. Each shell size is related to
a certain number of pins or socket. Hence, DB9 denotes sub with a
9-position shell size and 9-position contact configuration. Rs-232
applications commonly use this interface.
For several years, these ports have been standard equipment on PCs. The
serial port on usual Computer system is DB9 male. This connector
supports full-duplex data transfer.
DB25 Connectors
In DB25 connector, the top row has 13 pins and the lower row has 12 pins.
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SCSI applications or RS-232 serial uses DB25 connectors. In parallel
applications, the DB25 connector is sometimes known as IEEE-1284 Type A
Connector. In older systems normally, there was one DB25 female parallel
port. Even you will find male DB25 serial port instead of DB9 sometimes.
The DB25 SCSI connections are female and are available on older Apple
computers as well as on expansion cards for SCSI devices.
Just like the DB9 connectors, serial connections with the transmission of
data provided by standard RS-232 uses these connectors. Initially they
were used to connect printers. Hence, they are also known as ‘Printer Port’.
DB15 Connectors
With 15 pins arranged in two rows, the top row has 8 pins and a lower row
has 7. Make sure that you don’t get confused with HD15 connectors which
include three rows. The DB15 connector has two rows of pins found on
sound cards, older AUI network cards and devices, legacy Macintosh®
monitors. The most common peripheral for this port was a joystick or video
game controller, therefore, it is known as a ‘Game Port’.
This VGA socket is one of the typical examples of DB15 connectors. You
can find the same on Windows-based laptops and entry-level PCs.
DB37 Connectors
This type of connector has 37 pins arranged in two rows. The top row has
19 pins and rest of the 18 pins arranged in two rows. Cisco® networking
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hardware and other applications that use RS-449 serial communication
often uses these type of connectors.
Another various models of sensors, switches, satellite antennas, control
systems, video hardware, security control systems, and so on utilize these
connectors.
HD15 Connectors
As mentioned above this connector has 15 pins arranged in three rows.
Each of the row divided into 5 pins with the middle row slightly offset from
the top and bottom. This connector is a High-Density DB-style connector.
Another popular name is ‘​VGA connector​’ mostly used in video applications
that support high resolutions like SVGA, XGA, UXGA. On most HD15 male
connectors, there is one pin missing from the middle row.
This is a commonly used connector as a video interface for computers and
monitors. You can also find them on HD displays, satellite receivers, and
cable boxes.
Applications
You can often find D-sub connectors on communication ports to create
communication between different monitors, printers, and power supply
devices. Token ring network and other controller area networks also use
DB9 serial cables​. Other applications include video output, game controller
ports, multi-channel analog, and AES digital audio.
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Over the years, there have been additions of new connectors with the
evolution of technology. However, you can still consider using them. The
DB connectors are still popular because of their usage, form factor, size,
density, and cost which offers significant value to the end users. This Blog
is originally posted here; ​A Complete Guide to DB Style Connectors &
Cables
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