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PCI-1474U

PCI-1474U is a general-purpose communication card, intended for PCI (3.3V or 5V) or PCI-X bus. The card provides four non-isolated RS-422/485 ports.

The PCI-1474U card is based on the Oxford Semiconductor controller OXmPCI954 that provides PCI bus interface, four efficient UARTs (16C950 standard) and parallel interface in one circuit.

The first two ports at the PCI-1474U card lead to the D-Sub 9 connectors located on the card mounting bracket, the other two ports are accessible via the expansion card PCI-1029, fitted with the interface circuits located in the next slot.

Ports are not isolated, see PCI-1484U card if you need isolated ports.

Like any other TEDIA products, the RS-422/485 output circuits provide surge protection (TVS diodes) and termination impedances with fail-safe bias resistors, as advised by many standards (e.g. Profibus).

Useful feature are LED indicators on the card mounting bracket (a pair for every port) providing a comfortable check of the line activity.

Delivery details

The product packet includes the PCI-1474U card, PCI-1029 expansion card and InfoCD with drivers and user manual.

Specifications

Type PCI-1474U
Number of ports 4
Ports type RS-422/485
Communication controller OXmPCI954 (Oxford Semiconductor)
Transfer rate up to 921.6kBd
Supported signals RS-422: TXD+ (B), TXD- (A), RXD+ (B), RXD- (A)
RS-485: TXD/RXD+ (B), TXD/RXD- (A)
Transceiver type SN75176 (Texas Instruments)
RS-422/485 operating modes RS-422, RS-422 multimaster, RS-485
RS-422/485 flow control automatic (ADFC), DTR
RS-422/485 ESD
surge protection
300A, 8/20 µs, IEC 801-5 (TVS 5V8/600W)
Isolation voltage no isolation
RS-422/485
termination impedance
120Ω/0.7V
Bus type PCI, 3V3/5V, 32-bit, 33MHz
(64-bit PCI and PCI-X compatible)
I/O and MEM address,
Interrupt channels
assigned by PnP PCI BIOS
Dimensions approx. 90x125 mm (PCI-1474U)
approx. 80x65 mm (PCI-1029)