Q67100-H8395 データシートの表示（PDF） - Siemens AG

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Q67100-H8395

S/T Bus Interface Circuit (SBC)

Siemens AG 

Features

The S-Bus Interface Circuit (SBC) PEx 2080 implements the four-wire S/T-interface used to link

voice/data terminals to an ISDN. Through selection of operating mode, the device may be employed

in all types of applications involving an S interface. Two or more SBC´s can be used to build a point-

to-point, passive bus, extended passive bus or star configuration.

Specific ISDN applications of the SBC include: ISDN terminals, ISDN network termination (Central

Office and PABX applications), and PABX trunk lines to Central Office.

The device provides all electrical and logical functions according to CCITT recommendation I.430.

These include: mode-dependent receive timing recovery, D-channel access and priority control,

and automatic handling of activation/deactivation procedures. The SBC does not require direct

microprocessor control.

The SBC is an IOM compatible, 22-pin CMOS device. It operates from a single + 5 V supply and

features a power-down state with very low power consumption.

Semiconductor Group

6

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