DB9 RS232 Connector Female (2025)

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FAQs

What is the difference between RS232 and DB9 connectors? ›

The main difference between RS232 and DB9 lies in their definitions. RS232 is a standard that specifies the electrical characteristics of serial communication signals, while DB9 refers specifically to the connector used in RS232 communication, featuring nine pins arranged in a specific configuration.

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Is RS232 male or female? ›

A "male" connector is commonly referred to as a plug and has a solid pin for a center conductor. A "female" connector is commonly referred to as a jack and has a center conductor with a hole in it to accept the male pin. A standard PC serial port requires a "female" RS232 connector.

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What is a DB9 connector used for? ›

The DB9 connector is mainly used in serial ports, allowing asynchronous data transmission according to the RS-232 standard (RS-232C). Note that there are DB9-DB25 adapters that easily convert a DB9 socket to DB25 and vice versa.

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What is a de 9 serial RS232? ›

The 9-pin DE-9 connector has been used by most IBM-compatible PCs since the Serial/Parallel Adapter option for the PC-AT, where the 9-pin connector allowed a serial and parallel port to fit on the same card. This connector has been standardized for RS-232 as TIA-574.

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Is RS232 obsolete? ›

Two of the oldest interfaces are RS-232 and RS-485. Surprisingly, these legacy interfaces aren't obsolete. Both are still used in a variety of applications.

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Are RS232 cables still used? ›

Although RS-232 had been replaced by universal serial bus (USB), Ethernet and wireless technologies for connecting peripheral devices, such as modulator-demodulators (modems), printers and mice, to computers, it remains in use in many industrial, scientific and telecommunications applications because of its reliability ...

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Which device would most likely use a DB9 connector? ›

DB9 connectors were commonly used for serial peripheral devices like keyboards, mice, joysticks, etc. Also they are used on DB9 cable assemblies for data connectivity. Today, the DB9 has mostly been replaced by more modern interfaces such as USB, PS/2, Firewire, and others.

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What are the disadvantages of RS-232? ›

Limited Range: One of the main disadvantages of RS232 is its limited range. RS232 is designed for short-distance communication, typically no more than 50 feet. Susceptible to Interference: Additionally, RS232 uses a single-ended signal, which means that it is susceptible to noise and interference.

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What does RS-232 stand for? ›

In telecommunications, RS-232 or Recommended Standard 232 is a standard originally introduced in 1960 for serial communication transmission of data.

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Is RS-232 analog or digital? ›

Fundamentals of RS-232 Serial Communications | Analog Devices.

What is the RS-232 port used for? ›

An RS-232 serial port is most often used by repair technicians to perform diagnostics and service updates. It may also be used to control a device when connected to a computer running a home automation system or Custom Integrated Audio/Video (A/V) system, such as the CAV-M1000ES Multi-room A/V Distribution System.

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Does RS-232 need a twisted pair? ›

RS232 cables can be simple parallel wires or twisted pair up to 15 m (50 ft.), and 1,200 m (4,000 ft.) for RS422 and RS485 applications.

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What connector does RS232 use? ›

RS232 DB9 to DB25 converter

The original pin layout for RS232 was developed for a 25 pins sub D connector. Since the IBM-AT, 9 pins RS232 connectors are commonly used. In mixed applications, a 9 to 25 pins converter can be used to connect connectors of different sizes.

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What RS232 port is used for? ›

A serial port complying with the RS-232 standard was once a standard feature of many types of computers. Personal computers used them for connections not only to modems, but also to printers, computer mice, data storage, uninterruptible power supplies, and other peripheral devices.

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Is RS232 an Ethernet cable? ›

Is RS232 same as Ethernet? No, RS232 is not the same as Ethernet. RS232 is a serial communication standard used to transmit data over short distances, while Ethernet is a network communication standard used to connect multiple devices over long distances.

Is RS232 straight through cable? ›

Null modem, also called crossover, is a term associated with serial (RS-232) cables. A standard serial cable, also called an AT cable, has the wires inside the cable running straight through.