support for the 9-bit character format commonly used in microcontroller networks
speeds of up to 250,000 bits/second
built-in ESD protection reduces failures
slew-rate limited RS-485 transceiver reduces RFI and cable termination problems
automatically perform transmit/receive switching
jumper selected RS-485 bus termination and biasing
Optically isolated
The NBS-41 is a PCI-bus RS-485 asynchronous serial communication interface card for PCs. Based on Intel’s 82510 UART, the NBS-42 has several features particularly suited to RS-485 multi-drop networking.
| Electrical Interface | RS-485, slew-rate limited, optically isolated |
| Ports | One |
| Connectors | Two (one DB-9 female and one 3-pin “Phoenix”) |
| UART | Intel P82510, 18.432 MHz clock oscillator |
| Data Rate | max 250k bits/sec (limit= RS485 transceiver) |
| PCI Bus Interface | 5 volt, 32 bit, PCI rev. 2.1 compliant |
| Operating Temperature Range | 0 to 50 degrees C |
| Power Consumption | 420 mA typical (from PCI bus 5 volts) |
| Dimensions | 123 mm (length) by 107 mm (height) |
| Regulatory Approvals | Class B digital device |
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