D subminiature Wikipedia. A male DE 9 connector plug. Male 1. 3W3 connector plugThe D subminiature or D sub is a common type of electrical connector. They are named for their characteristic D shaped metal shield. When they were introduced, D subs were among the smallest connectors used on computer systems. Description, nomenclature, and variantsedit. DA, DB, DC, DD, and DE sized connectors. The DB1. 3W3 connector with three coaxial connections and ten ordinary pins. A D sub contains two or more parallel rows of pins or sockets usually surrounded by a D shaped metal shield that provides mechanical support, ensures correct orientation, and may screen against electromagnetic interference. The part containing pin contacts is called the male connector or plug, while that containing socket contacts is called the female connector or socket. The sockets shield fits tightly inside the plugs shield. Panel mounted connectors usually have threaded nuts that accept screws on the cable end connector cover that are used for locking the connectors together and offering mechanical strain relief. Occasionally the nuts may be found on a cable end connector if it is expected to connect to another cable end see the male DE 9 pictured. When screened cables are used, the shields are connected to the overall screens of the cables. This creates an electrically continuous screen covering the whole cable and connector system. The D sub series of connectors was introduced by Cannon in 1. Cannons part numbering system uses D as the prefix for the whole series, followed by one of A, B, C, D, or E denoting the shell size, followed by the number of pins or sockets, followed by either P plug or pins2 or S socket denoting the gender of the part. Each shell size usually see below for exceptions corresponds to a certain number of pins or sockets A with 1. B with 2. 5, C with 3. D with 5. 0, and E with 9. For example, DB 2. D sub with a 2. 5 position shell size and a 2. The contacts in each row of these connectors are spaced 3. This spacing is called normal density. The suffixes M and F for male and female are sometimes used instead of the original P and S for plug and socket. Later D sub connectors added extra pins to the original shell sizes, and their names follow the same pattern. For example, the DE 1. VGA cables, has 1. E size shell. The pins are spaced at 0. The other connectors with the same pin spacing are the DA 2. DB9-HD15-Diagram.gif' alt='D Sub 9 Serial Pinout' title='D Sub 9 Serial Pinout' />DB 4. DC 6. 2, DD 7. DF 1. They all have three rows of pins, except the DD 7. DF 1. 04 which has five rows in a new, larger shell. The double density series of D sub connectors features even denser arrangements and consists of the DE 1. DA 3. 1, DB 5. 2, DC 7. DD 1. 00. These each have three rows of pins, except the DD 1. D Sub 9 Serial Pinout For PcNormal density. High density. Double density. Name. Pin layout. Name. Pin layout. Name. Pin layout. DA 1. DA 2. 69 9 8. DA 3. DB 2. 51. 3 1. DB 4. DB 5. 21. 7 1. DC 3. 71. 9 1. 8DC 6. DC 7. 92. 6 2. 7 2. DD 5. 01. 7 1. 6 1. DD 7. 82. 0 1. 9 2. DD 1. 00. 26 2. DE 0. Rca Digital Cable Modem Driver. DE 1. DE 1. 96 7 6. DB 1. DF 1. 04. 21 2. However, this naming pattern is not always followed. Because personal computers first used DB 2. PC serial port began to use 9 pin connectors, they were often labeled as DB 9 instead of DE 9 connectors, due to an ignorance of the fact that B represented a shell size. Dsub 9 Connector Pinout. Pinout and diagram of DE9 connector DB9 connector, commonly used for serial ports RS232. It is now common to see DE 9 connectors sold as DB 9 connectors. DB 9 nearly always refers to a 9 pin connector with an E size shell. The non standard 2. D sub connectors for external floppy drives and video output on most of the Amiga computers are usually labeled DB 2. DB sockets. DA 2. DB 2. 6HD or HD 2. DB25Male.png' alt='D Sub 9 Serial Pinout Diagram' title='D Sub 9 Serial Pinout Diagram' />Reflecting the same confusion of the letters DB with just D as mentioned above, high density connectors are also often called DB 1. HD or even DB 1. HD 1. DB 2. HD HD 2. 6, DB 4. D Sub 9 Serial Pinout ConfigurationSerial RS232 modem cable DB9DB15. Pinout and signals for building a serial RS232 modem cable. Pinout of PC serial port RS232 DE9 and layout of 9 pin DSUB male connector and 10 pin IDC male connectorThis RS232C DE9 usually miscalled DB9 port is. HD, DB 6. 2HD, and DB 7. HD connectors, respectively, where HD stands for high density. Cannon also produced combo D subs with larger contacts in place of some of the normal contacts, for use for high current, high voltage, or co axial inserts. The DB 1. 3W3 variant was commonly used for high performance video connections this variant provided 1. Combo D subs are currently manufactured in a broad range of configurations by other companies, including Amphenol, Conec, Teledyne Reynolds, Assmann Electronics, Norcomp, Positronic, Cinch, 3. M, and Tyco. Some variants have current ratings up to 4. A  others are waterproof and meet IP6. A smaller type of connector derived from the D sub is called the microminiature D, or micro D, which is a trademark of ITT Cannon. It is about half the length of a D sub. A further family of connectors of similar appearance to the D sub family uses names such as HD 5. HD 6. 8, and has a D shaped shell about half the width of a DB2. They are common in SCSI attachments. The original D sub connectors are now defined by an international standard, IEC 6. Tech Stuff RS232 Cables, Wiring and Pinouts. Brief tutorial and pinouts for RS232, RS422485, T1E1 and V. If you want to know more about RS 232 signals then. The Dsubminiature or Dsub is a common type of electrical connector. They are named for their characteristic Dshaped metal shield. When they were introduced, Dsubs. Dsub 9 Connector. The DE9 Dsub 9pin connector is often mistakenly referred to as the DB9 connector. The E refers to the shell size. A DB25 connector has a. A parallel port is a type of interface found on computers personal and otherwise for connecting peripherals. The name refers to the way the data is sent parallel. DIN 4. 16. 52. The United States military also maintains another specification for D subminiature connectors, the MIL DTL 2. Typical applicationsedit. D sub connectors. Shown is a 9 pin male DE 9. M connector plug, and a 2. DB 2. 5F connector socket. The hexagonal pillars 4 4. They also have threaded sockets to receive jackscrews on the cable shell, holding the plug and socket together. Communications portseditThe widest application of D subs is for RS 2. RS 2. 32 devices originally used the DB2. DE 9 to be used. The standard specifies a male connector for terminal equipment and a female connector for modems, but many variations exist. IBM PC compatible computers tend to have male connectors at the device and female connectors at the modems. Early Apple Macintosh models used DE 9 connectors for RS 4. RS 2. 32. Later Macintosh models use 8 pin miniature DIN connectors instead. On PCs, 2. 5 pin and beginning with the IBM PCAT 9 pin plugs were used for the RS 2. Amphenol socket found on the printer itself, which was inconveniently large for direct placement on the expansion cards. Many uninterruptible power supply units have a DE 9. F connector on them in order to signal to the attached computer via an RS 2. Often these do not send data serially to the computer but instead use the handshaking control lines to indicate low battery, power failure, or other conditions. Such usage is not standardized between manufacturers and may require special cables. Network portseditDE9 connectors were used for some token ring networks as well as other computer networks. The Attachment Unit Interfaces that were used with 1. BASE5 thick net in the 1. DA1. 5 connectors for connectivity between the Medium Attachment Units and Ethernet network interface cards, albeit with a sliding latch to lock the connectors together instead of the usual hex studs with threaded holes. The sliding latch was intended to be quicker to engage and disengage and to work in places where jackscrews could not be used for reasons of component shape. DE 9 connectors are commonly used in CAN female connectors are on the bus while male connectors are on devices. Computer video outputedit. Female DE 1. 5 connector Socket, used for VGA, SVGA and XGA ports. A female 9 pin connector on an IBM compatible personal computer may be a video display output such as MDA, Hercules, CGA, or EGA rarely VGA or others.