PEB2080 SIEMENS [Siemens Semiconductor Group], PEB2080 Datasheet - Page 4

• Manufacturer Part Number: PEB2080
• Description: S/T Bus Interface Circuit(SBC)
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

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
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