USB to RS232 TTL | CMOS Adapter Cable with Terminal Block

USB to RS232 TTL Cable Adapter

The new USB to RS232 TTL adapter allows you to control your voltage setting as you need whether 3.3V or 5V is needed. Dip switch controls are located at the RS232 terminal block for easy access to your voltage setting.

  • Voltage can be set for 3.3V or 5V – Voltage labels on adapter.
  • 5ft. length allows flexible connections.
  • 5-pin terminal block RS232 serial connection for wired applications.
  • Fully compatible with USB 1.1 and forward compatible with USB 2.0.

$43.95

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Units Price
1 - 4 $43.95
5 - 11 $42.63
12 - 24 $41.75
25 - 49 $40.87
50+ $39.56

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Model No. USB-232TTLMOS

Description

USB to RS232 TTL voltage choices just got easier!

Up until now you’ve had to make a choice between USB to TTL adapters and their voltage with either or selections. This USB to RS232 TTL/CMOS adapter cable eliminates that by allowing you to choose a voltage setting right at the adapter’s connection point at the terminal block

The USB-2323TTLMOS provides a USB to RS232 port with 5V/3.3V/2.5V/1.8V TTL / CMOS compatible Logic levels. The RS232 signals include TXD, RXD, and GND. The RS232 TTL cable is USB bus powered and does not need any DC power from an external AC Power Adapter. The TTL /CMOS RS232 signals are processed on the 5-pin Terminal Block.

Terminal Block Configuration

Pin 1    TXD (Output)
Pin 2    RXD (Input)
Pin 3    VOUT (Output TTL / CMOS Power)
Pin 4    VIN (Input TTL / CMOS Power)
Pin 5    GND (Ground for TTL / CMOS)

Features

  • Provides 1 TTL/CMOS RS232 Serial Port over USB Port
  • Supports 3-Signal TTL/CMOS RS232 Conversion: (TXD, RXD, GND)
  • The 2,500Vrms Isolation Model is Available Here
  • Supports a 5-pin Terminal Blocks for TTL/COMS Signal Wiring
  • 5V/3.3V/2.5V/1.8V Logic Level Selectable by DIP Switch
  • Signal Levels are Similar to Standard RS232 but in TTL/CMOS Swing Level
  • Easy Serial Port Expansion over USB Port
  • USB1.1 and USB2.0 Forward Compatible
  • Built-in FTDI USB UART Chip
  • Supports Serial Speed from 300bps to 921.6Kbps
  • Supports 7,8 Data Bits
  • Odd, Even, Mark, Space, None parity mode
  • Supports 1, or 2 Stop Bits
  • Supports Win98, Me, XP, CE, 2000, 2003, 2008 Win 7, Vista, Win 8, 10 Linux and Mac OS

Specifications

    • Fully compatible with USB1.1 and Forward Compatible with USB 2.0

TTL/CMOS Serial Port

Supports one 5-pin Terminal Block TTL/CMOS RS232 Serial port, the key benefits are:

  • Logic Levels: Selectable by a DIP Switch
  • Data Bits: 7, 8
  • Stop Bits: 1, 2
  • Parity: None, Odd, Even, Mark, Space
  • Baud Rate: 300bps to 921.6Kbps

OS Support

XP, CE, 2000, 2003, Vista, Win 7, 8, 10, Linux and Mac OS

Power Requirements

USB Bus Powered, no External Power Supply Needed.
+2.5V or +1.8V DC Power Input Required on the 5-pin Terminal Blocks in case of Supporting 2.5V or 1.8V Logic Levels

Environmental

  • Operating Temp.: -40 to 85°C (-40 to 185°F)
  • Storage Temp: -40 to 85°C (-4 to 185°F)
  • Operating Humidity: 5 to 95% RH

Form Factor

1.77”(L)x1.65”(W)x1.15”(H) (4.49 x 4.18 x 2.20 cm)

Package Contents

  • USB to RS232 TTL CMOS Adapter
  • Driver Disc
Specifications

Product Specifications

Compliance
Country of Origin

Taiwan

Compliance

RoHS, TAA

Mechanical
Color

Black

Length

5ft

USB
USB Type

USB 2.0

Serial Attributes
Serial Standards

RS232

Environmental
Operating Temperature

-40 to 85 C

Other Data
Connector

5-Pin Terminal Block

Weight

0.412 lbs

Dimensions

8.937 × 6.312 × 1.612 in

UPC: 736983902375
Support

Product Documentation & Drivers


Need drawings, CAD files, or other compliance documentation? Click HERE

Serial F.A.Q.

Product F.A.Q.

View frequently asked product questions below. For all serial troubleshooting, visit this page.
Still need help? Reach out!

  • How do I clean and reinstall my FTDI drivers?
      1. Download the CDM Uninstaller HERE.
      2. Extract the zip file, or open the “CDMuninstallerGUI.exe” utility.
      3. Leave the ‘Vendor ID’ set to 0403 and ‘Product ID’ set to 6001.
      4. Click Add.
      5. Click Remove Devices.
      6. Download the corresponding driver for your operating system and follow on-screen prompts. Windows Driver | MacOS Driver

    Video tutorial here.

  • How can I change my device’s COM port?
      1. Click on Start and navigate to the Control Panel
      2. Locate and click on Device Manager
      3. Under “Ports (COM & LPT)” you will find your serial device titled “USB Serial Port” along with its current COM Port.
      4. Right click on “USB Serial Port” and click on Properties.
      5. Navigate to the “Port Settings” tab and click on “Advanced…”
      6. Once there, the “COM Port Number:” can be changed with a dropdown menu to select the port number.
      7. Click your desired port number (i.e. COM2) and click “OK”.
      8. Click “OK” once more.
      9. Your serial device is now assigned to your chosen COM Port.

     

  • How do I check to ensure the COM port is listed properly in Windows?
    To ensure your serial device is installed properly, complete the following:

    1. Press Windows Key + R to open the Device Manager. Once Run comes up, type “devmgmt.msc” into the text field and press Enter.
    2. Expand the section labeled, Ports (COM & LPT).
    3. You should now see a COM number in brackets to the right of each port. If the device is installed properly, no exclamation points or question marks should be present next to the device.
  • I have everything hooked up, but nothing is functioning correctly.
    To rule out potential issues, quickly test your individual components to ensure that they are working correctly individually, and are not the source of the problem:

    • Serial cables
    • Serial ports
    • Serial devices

    Test your components by:

    • Hook up the serial cable(s), serial port(s), and serial device(s) in a different setup to see if the issue stems from a particular component, or the setup as a whole.
    • Replace the serial cable, port, or device within your setup to further troubleshoot the issue’s origin.

    When testing cables:

    • Test each cable individually.
    • Use short cables when you are testing.

    When testing serial ports and devices:

    • Press the Windows key + R, in Run, type devmgmt.msc, and press Enter to open the Device Manager. You can then check to see if your device is listed under Ports (COM & LPT).
    • Ensure that the COM port number is the correct number for the serial device and that the software being used to connect the computer to the serial device uses the correct COM port number.
    • If the device is listed with an error, follow the instructions on the website to reinstall the drivers.
  • Serial communication is not functioning correctly, how can I tell if the problem caused by the adapter or my serial software application?
    Older serial communication applications make use of legacy hardware addresses, often incompatible with PCI, PCIe, and USB to Serial products. Contact the software provider to troubleshoot.
  • I am receiving an error when I try to install the drivers in Windows 8 64 bit.
    Driver Signature Enforcement in Windows 8 may need to be disabled in order to use various drivers. After disabling this feature, the driver will be allowed to install.

    Note: You are required to restart your computer after disabling the Driver Signature Enforcement. Save all open work on your computer.

    Disable driver signature enforcement:

    1. Press the Windows key + C.
    2. Click Settings > Change PC Settings.
    3. In the left pane, click General.
    4. In the right pane, under Advanced startup, click Restart now.

    When your system restarts:

    1. Click Troubleshoot > Advanced options > Startup Settings > Restart.
    2. Press 7.

    When your computer restarts, Driver Signature Enforcement will be disabled and you can install the drivers.

  • I am receiving an error when I try to install the drivers in Windows 10 64 bit.
    Driver Signature Enforcement in Windows 10 may need to be disabled in order to use various drivers. After disabling this feature, the driver will be allowed to install.

    Note: You are required to restart your computer after disabling the Driver Signature Enforcement. Save all open work on your computer.

    Disable Driver Signature Enforcement:

    1. Click the Windows icon in the taskbar.
    2. Click Power.
    3. Press and hold the Shift key and click Restart.

    After your computer restarts:

    1. Click Troubleshoot Advanced Options Startup Settings Restart.
    2. Press 7.

    When your computer restarts, Driver Signature Enforcement will be disabled and you can install the drivers.

  • Why did the software not install properly in macOS High Sierra (10.13) or later?
    High Sierra 10.13 and later versions of macOS enforce strict security policy revisions. In order for the device to operate, software packages like those used in this installation must be allowed in macOS Security and Privacy settings once the software is installed.

    Once the driver/software is installed, follow these steps to allow the software:

    1. Open System Preferences.
    2. Open Security & Privacy.
    3. Click the Allow button near the bottom of the General tab.
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