Fastcom®: 422/2-104 Asynchronous Dual Port RS422/485 Interface Adapter   $325.00

The FASTCOM: 422/2-104 adapter is the fastest and most advanced dual-port RS422 asynchronous adapter in the industry, up to 1.5 Mbps¹. Primarily designed for commercial, industrial, and OEM applications, the FASTCOM: 422/2-104 features two discrete RS422 channels, complete with RTS and CTS flow control signals.

The advanced 16C850 UART on the FASTCOM: 422/2-104 features full compatibility with standard 16C550 and 16C650 UARTs, but also provides extraordinary 128-byte receive and transmit FIFOs for buffering. This buffering is extremely important when working with RS422 / RS485 communications within high-overhead operating systems such as Windows NT and 2000. The extra-deep FIFOs prevent data loss due to overrun and dramatically improve data throughput in all applications. The advanced UART on the FASTCOM: 422/2-104 is capable of all standard baud rates, plus a high-speed mode capable of up to an amazing 1.5 Mbps¹.

The FASTCOM: 422/2-104 is designed with a compatible mode for operation in Windows 98/2000/NT/XP, and Linux Kernel 2.4.x. The user selectable address and IRQ setting switches allow for "driverless" operation in most operating systems, i.e. uses the system serial port driver for operation. The "shared interrupt" design and user selectable address also allow the installation of multiple FASTCOM: 422/2-104 cards in the same system.

We recommended that you use our Fastcom: LT1 PC/104 Bus termination adapter with our Fastcom: 422/2-104 adapter to improve your system's reliability.

• UART: EXAR 16C850 (Data Sheet)
• BAUD RANGE: Off-the-shelf up to 115.2k. Additional clock rates up to 1.5 Mbps¹ possible
• BUFFERING
  
  • Transmit - 128-bytes
  • Receive - 128-bytes
• INTERFACE: RS422 / RS485 DB9 connector
  
  • TX, RX, RTS, CTS
• BUS: PC/104

• +5 500mA (typical)

• Storage Temperature Range: -20 to +70 C
• Operating Temperature Range: 0 to 70 C
• Humidity: 0 to 90% (non-condensing)

• Fastcom: 422/2-104
  
  • Dual independent RS422 / RS485 channels
  • Transmit/Receive status LEDs for each channel
  • TX, RX, RTS, CTS signals for each channel
  • Excellent line noise immunity
    
• Address Mode
  
  • User selectable address/IRQ for each channel
  • Can be configured as a fully compatible COM1, COM2, COM3, or COM4
    
• RS485 Mode
  
  • Up to 32 stations on same “twisted-pair” network
  • RTS control of the line driver
    
• High performance 16C850 UART
  
  • Standard on the Fastcom: 422/2-104, no extra charge
  • High throughput, full compatibility, higher speed
    
• Documentation and software drivers included
• Designed and manufactured by COMMTECH, INC. Wichita, Kansas, USA