T-7290-EL

The T-7290-EL is a sigle-chip,COMS line trandcelver capable of operation at the domestic DS1/T1 carrler rate or the international CEPT1 rate.The T-7290-EL device combines features found in existing line-interface devices and adds other desirable features.

Features of the T-7290-EL are:(1)fully integrated ISDN DS1/T1/CEPT line interface;(2)dual-rail system interface;(3)on-chip transmit equalization;(4)on-chip jitter attenuator;(5)monolithic clock recovery with acqulsition aide;(6)low-power CMOS in a 28-pin,plastic DIP or SOJ package;(7)high jitter accommodation;(8)two on-chip phase-lock loops to facilitate clock synchronization without external crystals;(9)three clocking modes to accommodate any system clocking requirements;(10)multiple link status and alarm features;(11)microprocessor interface option for control features;(12)AIS transmission;(13)minimal external circuitry required.

The absolute maximum ratings of the T-7290-EL can be summarized as:(1):the parameter is dc supply voltage ,the symbol is VDD,the value is -0.5 to +6.5,the unit is V;(2):the parameter is power dissipation,the symbol is PD,the value is 1,the unit is W;(3):the parameter is storage temperature,the symbol is Tstg,the value is -65 to 125,the unit is .