SEA-3547

SEALEVEL 3547 C4-104.485+I

The 3547 PC/104 serial interface provides four serial ports with 1,500VDC port-to-port isolation that protect the host system from ground loops and voltage transients that are common in remote installations and industrial environments. If not planned for, ground loops and voltage spikes can cause loss of data, latent hardware failures, or even destruction of the serial card or other system components. For maximum versatility without opening the PC/104 stack, each port is software configurable for full-duplex (4-Wire) RS-422 or RS-485. Half duplex (2-Wire) RS-485 mode is also supported. The 'auto-enable' circuit automatically handles the RS-485 driver, which eliminates the risk of bus contention and data corruption. With the driver controlled in hardware, the RS-485 ports are treated as standard serial COM ports by the operating system. Jumpers on the board allow you to suppress ECHO on a per-port basis. The 3547 includes an Oxford 16954 UART with 128-byte transmit and receive FIFOs for fast, error-free communications up to 921.6K bps. The UART includes support for 9-bit protocol and the clock prescaler, coupled with a 14.7456 oscillator, provides the highest resolution for achieving all standard and many non-standard baud rates. Sealevel's SeaCOM software drivers and utilities make installation and operation easy using Windows 98SE, ME, NT, 2000, XP and Vista operating systems. Standard operating temperature range is 0°C – 70°C, and an extended temperature range version offering -40°C – +85°C is also available.

Features:

• 1,500VDC port-to-port isolation protects against transients and ground loops
• Each port software configurable for 4-wire RS-422/485 or 2-wire RS-485
• 16954 buffered UART with 128-byte FIFOs for error-free communications
• Automatic hardware RS-485 enable/disable eliminates risk of bus contention and data corruption
• Data rates to 921.6K bps
• Jumpers on each port for suppressing ECHO
• Four 10-pin vertical header connectors
• Extended temperature range available (-40°C - +85°C)