SK70720

The SK70720 is designed as one kind of D complete, variablerate transceiver that provides full duplex communication on two wires using echo-canceller-with-hybrid and 2B1Q line coding technology. This device provides symmetrical line rates from 272 to 784 kbps. And SK70720 can be used in wide range of applications such as:(1)high speed residential internet access;(2)extended range fractional T1 / E1 transport;(3)4, 6, 8 or 12-channel digital pair-gain;(4)wireless base station to switch access;(5)WAN access for LAN routers.

Features of the SK70720 are:(1)fully integrated, 2-chip transceiver for interfacing to twisted-pair lines at 272 to 784 kbps;(2)integrated line drivers, filters and hybrid circuits reduce the number of external components required;(3)self-contained activation / start-up control eliminates an external microprocessor in many applications;(4)parallel interface for processor control or monitoring;(5)programmable for either link master or slave operation;(6)single +5 V supply;(7)typical power dissipation less than 500 mW - good for applications with remote power feeding;(8)supports transparent repeater applications without an external processor or glue-logic;(9)supports processor directed rate selection driven by receive signal level and noise margin.

The electrical characteristics of SK70720 can be summarized as:(1)input low voltage: 0.5 V;(2)input high voltage: 4.0 V;(3)output low voltage: GND+0.3 V;(4)output high voltage: Vcc2-0.5 V;(5)input leakage current: +/- 50 uA;(6)tristate leakage current: +/- 30 uA;(7)input capacitance: 12 pF;(8)load capacitance (MSTR_CK output): 15 pF. If you want to know more information such as the electrical characteristics about the SK70720, please download the datasheet in www.seekic.com or www.chinaicmart.com.