Product Summary

The LE88241DLC is a dual-channel Automatic Battery Switching (ABS) VoicePort device. It implements a dual-channel telephone line interface by providing all the necessary voice interface functions from the high voltage subscriber line to the μP/DSP digital interface. The LE88241DLC can operate from external battery supplies, or from supplies generated by the on chip switching regulator controllers. The LE88241DLC reduces system level cost, space, and power by achieving the highest level of voice integration possible.

Features

LE88241DLC features: (1)Battery Feed, Over-voltage support, integrated Ringing, line Supervision, Codec, Hybrid (2W/4W), Test; (2)Small footprint package - Exposed pad 80-pin LQFP; (3)Minimal external discrete components required; (4)Integrated high voltage switching regulator controllers; (5)Wide input voltage range (VSW =+3.3V to +35 V); (6)Generates supplies for VBH, VBM & VBL; (7)Low power Idle and On-hook transmission states; (8)5 REN with pin for pin compatible 100-V (Le88221) and 120-V (Le88241) devices; (9)Up to 110-Vpk internal balanced sinusoidal or trapezoidal ringing with programmable DC offset; (10)Unbalanced ringing for PBX trunk compatibility (Le88241 device); (11)Pin selectable PCM/MPI or GCI interface; (12)Two-wire AC impedance, Balance Impedance, Gain; (13)DC feed voltage and current limit; (14)Ringing frequency, voltage and current limit; (15)12 kHz and 16 kHz Metering; (16)Programmable loop closure and ring trip thresholds.

Diagrams

LE88241DLC block diagram

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Data Sheet
Negotiable