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L7554 - Low-Power SLIC

Description

This electronic subscriber loop interface circuit (SLIC) is optimized for low-power consumption while providing an extensive set of

Features

  • s Low active power (typical 165 mW during on-hook transmission) s Sleep state for low idle power (76 mW) s Quiet Tip/Ring polarity reversal s Supports meter pulse injection s Spare op amp for meter pulse filtering s.
  • 24 V to.
  • 72 V power supply operation s Distortion-free on-hook transmission s Convenient operating states:.
  • Forward powerup.
  • Polarity reversal powerup.
  • Forward low-power scan.
  • Polarity reversal low-power scan.
  • Ground start.

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Datasheet preview – L7554

Datasheet Details

Part number L7554
Manufacturer Lucent Technologies
File Size 302.36 KB
Description Low-Power SLIC
Datasheet download datasheet L7554 Datasheet
Additional preview pages of the L7554 datasheet.

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Full PDF Text Transcription

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Data Sheet March 1997 L7554 Low-Power SLIC Features s Low active power (typical 165 mW during on-hook transmission) s Sleep state for low idle power (76 mW) s Quiet Tip/Ring polarity reversal s Supports meter pulse injection s Spare op amp for meter pulse filtering s –24 V to –72 V power supply operation s Distortion-free on-hook transmission s Convenient operating states: — Forward powerup — Polarity reversal powerup — Forward low-power scan — Polarity reversal low-power scan — Ground start — Disconnect (high impedance) s Adjustable supervision functions: — Off-hook detector with longitudinal rejection — Ground key detector — Ring trip detector s Independent, adjustable, dc and ac parameters: — dc feed resistance — Loop current limit — Termination impedance s Thermal protection Descript
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