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L9313 Datasheet(PDF) 1 Page - Agere Systems |
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L9313 Datasheet(HTML) 1 Page - Agere Systems |
1 / 40 page Data Sheet September 2001 L9313 Line Interface and Line Access Circuit Full-Feature SLIC and Ringing Relay for TR-57 Applications Introduction The Agere Systems Inc. L9313 is a combination full- feature, ultralow-power SLIC, solid-state ringing access relay, and line test matrix. It is part of a pin- for-pin compatible family of devices designed to serve a wide variety of applications. The L9313 is optimized for TR-57 applications where forward and reverse battery and ground start are required. Features SLIC s 5 V and battery operation s Optional automatic battery switch s Seven operational modes s Appropriate for 58 dB longitudinal balance applica- tions s Minimal external components required at all inter- faces s Ultralow power dissipation s Software/hardware adjustable dc parameters and supervision thresholds s Ground start compatible Solid-State Ring Relay s Low impulse noise s Current-limited switches/thermal protection Applications s Pair Gain s Digital Loop Carrier (DLC) s Central Office (CO) s Fiber-in-the-Loop (FITL) Description The L9313 electronic line interface and line access circuit (LILAC) provides all the functions that are nec- essary to interface a codec to the tip and ring of a subscriber loop, integrating the battery feed and ring- ing access relay in one low-power, low-cost package. The L9313 requires a 5 V and battery supply to oper- ate. Included is an automatic battery switch. The bat- tery feed offers forward and reverse battery, on-hook transmission, and ground start operational modes. It also has a low-power scan and a disconnect mode. In all operating states, this IC is designed for minimal power dissipation. This device is designed to mini- mize the number of external components required at all interfaces. The dc template, current limit, and overhead voltage and loop supervision threshold are programmable via an applied voltage source. The voltage source may be an external programmable voltage source or derived from the VREF SLIC output. The integrated solid-state switch offers power ringing access. Impulse noise is minimized, thus eliminating the need for external zero-cross switching circuitry. |
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