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Serial Adapters (DB9, DB25)

The Serial Adapters (DB9, DB25) is aquick and easy fix for your DTE or DCE incompatibilities. We carry AT Modem Adapter, AT Modem Mini Adapter, Null Modem Adapter, and Null Modem Mini Adapter.

Items 1-10 of 17

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DB9 Male to DB25 Male AT Modem Adapter
SKU: DB201-0100

DB9 Male to DB25 Male AT Modem Adapter

1
$1.70
2
$1.65
20
$1.60
40
$1.55
$1.70
DB9 Male to DB25 Female AT Modem Adapter
SKU: DB201-0200

DB9 Male to DB25 Female AT Modem Adapter

1
$1.70
2
$1.65
20
$1.60
40
$1.55
$1.70
DB9 Female to DB25 Male AT Modem Adapter
SKU: DB201-0300

DB9 Female to DB25 Male AT Modem Adapter

1
$1.70
2
$1.65
20
$1.60
40
$1.55
$1.70
DB9 Female to DB25 Female AT Modem Adapter
SKU: DB201-0400

DB9 Female to DB25 Female AT Modem Adapter

1
$2.03
2
$1.92
20
$1.81
40
$1.70
$2.03
DB9 Male to DB9 Male Null Modem Adapter
SKU: DB202-0100

DB9 Male to DB9 Male Null Modem Adapter

1
$1.30
2
$1.25
20
$1.20
40
$1.15
$1.30
DB9 Male to DB9 Female Null Modem Adapter
SKU: DB202-0200

DB9 Male to DB9 Female Null Modem Adapter

1
$1.30
2
$1.25
20
$1.20
40
$1.15
$1.30
DB9 Female to DB9 Female Null Modem Adapter
SKU: DB202-0400

DB9 Female to DB9 Female Null Modem Adapter

1
$1.51
2
$1.43
20
$1.34
40
$1.26
$1.51
DB25 Male to DB25 Male Null Modem Adapter
SKU: DB203-0100

DB25 Male to DB25 Male Null Modem Adapter

1
$1.80
2
$1.75
20
$1.70
40
$1.65
$1.80

Out of stock

DB25 Male to DB25 Female Null Modem Adapter
SKU: DB203-0200

DB25 Male to DB25 Female Null Modem Adapter

1
$1.80
2
$1.75
20
$1.70
40
$1.65
$1.80
DB25 Female to DB25 Female Null Modem Adapter
SKU: DB203-0400

DB25 Female to DB25 Female Null Modem Adapter

1
$2.36
2
$2.23
20
$2.10
40
$1.97
$2.36

Items 1-10 of 17

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More About Serial Adapters (DB9, DB25)

CableLeader offers a wide range of DB9 Male to Male Null Modem Mini Adapters, DB9 Male to Female Null Modem Mini Adapters, and DB9 Female to Female Null Modem Mini Adapters designed to convert straight wired cables to null modem wiring. Our low profile design saves space while maintaining full functionality.

We also provide DB9 to DB25 adapters in various gender combinations, such as DB9 Male to DB25 Male, DB9 Male to DB25 Female, DB9 Female to DB25 Male, and DB9 Female to DB25 Female. These adapters allow you to convert between DB9 and DB25 connectors easily.

For more heavy-duty applications, our molded null modem adapters like the DB9 Male to DB9 Male, DB9 Male to DB9 Female, and DB9 Female to DB9 Female provide full shielding to reduce EMI/RFI interference.

All our serial adapters are made with high-quality materials and are RoHS compliant, ensuring both performance and safety. Whether you need to extend cable lengths, convert between connector types, or establish null modem connections, CableLeader has the right serial adapter solution for you.

Unlock the Power of Serial Adapters: Your Ultimate Guide to DB9 and DB25 Connectors

Introduction to Serial Adapters

In the ever-evolving world of technology, serial communication remains a crucial component for connecting various devices and peripherals. Among the most common connectors used in serial communication are the iconic DB9 and DB25 connectors. These versatile adapters have been instrumental in facilitating data transfer and ensuring seamless connectivity across a wide range of applications.

What are DB9 and DB25 Connectors?

The DB9 and DB25 connectors, also known as D-subminiature connectors, are widely recognized for their distinct D-shaped shells and multiple pins. The DB9 connector features 9 pins, while the DB25 connector boasts 25 pins. These connectors were extensively used in peripherals such as serial printers, mice, game controllers, and modems, often referred to as RS-232 ports or COM ports.

Connectors and Specifications

DB9 Connectors

  • Male DB9 Connectors: Commonly used for serial peripheral devices like keyboards, mice, joysticks, and data connectivity.
  • Female DB9 Connectors: Often found on computer serial ports or cable assemblies.

DB25 Connectors

  • Male DB25 Connectors: Typically associated with RS-232 serial ports on older computer and telecommunication equipment.
  • Female DB25 Connectors: Primarily used for computer printer ports or parallel ports.

Applications and Usage

Serial adapters are essential for a wide range of applications, including:

  • Extending Cable Lengths: By connecting two cables together, serial adapters allow for increased cable lengths, enabling communication over longer distances.
  • Converting Connector Types: These adapters facilitate the conversion between different connector types, such as DB9 to DB25, ensuring compatibility across various devices and systems.
  • Establishing Null Modem Connections: Null modem adapters are designed to convert straight-wired cables to null modem wiring, enabling communication between two Data Terminal Equipment (DTE) devices without the need for a Data Circuit-Terminating Equipment (DCE) device.

CableLeader's Serial Adapter Solutions

At CableLeader, we understand the importance of reliable and high-quality serial adapters. Our extensive range of products includes:

Null Modem Mini Adapters

Our DB9 Male to Male Null Modem Mini Adapters, DB9 Male to Female Null Modem Mini Adapters, and DB9 Female to Female Null Modem Mini Adapters are designed to convert straight-wired cables to null modem wiring, featuring a low-profile design for space-saving convenience.

DB9 to DB25 Adapters

Our range of DB9 Male to DB25 Male, DB9 Male to DB25 Female, DB9 Female to DB25 Male, and DB9 Female to DB25 Female adapters allows you to seamlessly convert between DB9 and DB25 connectors, ensuring compatibility across various devices and systems.

Molded Null Modem Adapters

For heavy-duty applications, our molded null modem adapters, such as the DB9 Male to DB9 Male, DB9 Male to DB9 Female, and DB9 Female to DB9 Female, provide full shielding to reduce EMI/RFI interference, ensuring reliable and robust performance.

Quality and Compliance

At CableLeader, we prioritize quality and safety. All our serial adapters are manufactured using high-quality materials and are RoHS compliant, ensuring both performance and environmental responsibility. Whether you need to extend cable lengths, convert between connector types, or establish null modem connections, CableLeader has the right serial adapter solution to meet your needs.

Conclusion

In the world of serial communication, DB9 and DB25 connectors have played a pivotal role in enabling seamless connectivity and data transfer. With CableLeader's comprehensive range of serial adapters, you can unlock the full potential of these iconic connectors, ensuring compatibility, reliability, and efficiency across various applications. Embrace the power of serial adapters and elevate your connectivity solutions to new heights.

Serial Adapters (DB9, DB25) FAQ

What is DB9 and DB25?

DB9 was a 9-pin connector, and DB25 was a 25-pin connector. They were commonly used for peripherals such as serial printers, mice, game controllers, and modems. These connectors were often referred to as RS-232 ports or COM ports.

Are all DB9 connectors the same?

No, there are at least three types of DB9 connectors, differentiated by the method used to attach the wires to the contacts: soldering, insulation displacement, or crimping.

Is DB25 analog or digital?

DB25 connectors were typically used for analog connections, such as with AT modem adapters. The AES/EBU standard uses DB25 connectors for digital audio transmission.

Is DB9 discontinued?

While the Aston Martin DB9 car model has been discontinued, the DB9 connector itself is still widely used in various industries and applications, particularly for serial communication.

What replaced the DB9?

In personal computers, the DB9 connector has largely been replaced by more modern interfaces such as USB, PS/2, FireWire, and others. However, it is still commonly used in industrial and telecommunication equipment.

Why is it called DB9 connector?

The term "DB9" refers to the D-subminiature connector family, with "D" representing the D-shape of the connector shell, and "9" indicating the number of pins or holes. The "B" originally represented the shell size, but the term "DB9" became widely used due to its association with personal computers.

What is RJ45 to DB9 used for?

DB9 to RJ45 adapters are often used in combination with RS-232 repeaters for extending the distance of a serial RS-232 link. They can also be used for other adapter or converter purposes.

What is the DB9 port on a computer?

On older computers, the DB9 port was commonly used for connecting serial peripheral devices such as keyboards, mice, joysticks, and modems. However, it has largely been replaced by USB and other modern interfaces in modern computers.

What does a DB9 null modem do?

A DB9 null modem adapter is designed to convert straight-wired cables to null modem wiring, allowing two DTE (Data Terminal Equipment) devices to communicate directly by flipping the Transmit (TXD) and Receive (RXD) pins on one of the serial connectors.

Is DB25 a RS-232?

Yes, on older computer and telecommunication equipment, a DB-25 connector was typically used for RS-232 serial ports. Prior to the mid-1980s, RS-232 ports commonly used DB-25 connectors.

Is RS-232 the same as DB9?

No, RS-232 is a communication protocol that defines signal voltages, timings, and other specifications, while DB9 is a 9-pin connector commonly used for RS-232 connections. However, RS-232 can also use other connector types, such as the 25-pin DB-25.

What is the use of DB25 connector?

The DB25 connector, part of the D-subminiature connector family, was primarily used for serial and parallel ports, allowing asynchronous data transmission according to the RS-232 standard.

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