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 pinfor-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

■ 5 V and battery operation

■ Optional automatic battery switch

■ Seven operational modes

■ Appropriate for 58 dB longitudinal balance applications

■ Minimal external components required at all interfaces

■ Ultralow power dissipation

■ Software/hardware adjustable dc parameters and supervision thresholds

■ Ground start compatible

Solid-State Ring Relay

■ Low impulse noise

■ Current-limited switches/thermal protection

Applications

■ Pair Gain

■ Digital Loop Carrier (DLC)

■ Central Office (CO)

■ Fiber-in-the-Loop (FITL)