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Coolgear USB to RS232 Isolated TTL | CMOS Adapter Cable with TB

In stock.
Ships from United States.
Most customers receive within 7-9 days.
  • Supports 3-Signal TTL/CMOS RS232 Conversion: (TXD, RXD, GND)
  • Provides 1 TTL/CMOS RS232 Serial Port over USB Port
  • USB1.1 and USB2.0 Forward Compatible

USB to RS232 isolated TTL with voltage choices via DIP switch

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 isolated 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. If there is no need for isolation in your application this adapter is also available in a non-isolated version.

The USB-2323TTLMOS-IS 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 with 2 500Vrms Isolation on each signal. 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.


  • 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
  • Supports a 5-pin Terminal Blocks for TTL/COMS Signal Wiring
  • 5V/ 3.3V Logic Level Selectable by DIP Switch
  • Signal Levels are Similar to Standard RS232 but in TTL/CMOS Swing Level
  • Supports 2 500Vrms Isolation for TTL/CMOS Signals
  • Easy Serial Port Expansion over USB Port
  • USB 1.1 and USB 2.0 Forward Compatible
  • Built-in FTDI USB UART Chip
  • Supports Serial Speed from 300bps to 921.6K bps
  • 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
  • USB Bus Powered no External Power Supply Needed

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