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L8576B Datasheet

  • L8576B

  • Dual Ringing SLIC

  • 26頁

  • AGERE

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Data Sheet
May 2001
L8576B Dual Ringing SLIC
Features
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Applications
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Two SLIC channels for multiple tip/ring interfaces
On-chip balanced ringing generator, no ring relay
required
Single battery operation or optional automatic bat-
tery switch
Quiet battery reversal for on-hook signaling
Disconnect state
Distortion-free, on-hook transmission
24 mA loop current limiter
Ring trip detector
Switchhook detector
Immune to channel crosstalk and impulse noise
Allows rail overvoltages for ease of protection
Thermal protection
44-pin, surface-mount, plastic package (PLCC)
POTS for ISDN
Terminal adapters (TA)
Digital loop carrier (DLC) systems
PABX
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Description
The Agere Systems Inc. L8576B electronic dual sub-
scriber line interface circuit (SLIC) provides all the
functions that are necessary to interface a codec to
the tip and ring of a subscriber loop, integrating two
battery feeds and ringing generators in one low-cost
package. The L8576B device is optimized to meet
the needs of short loop, customer premises applica-
tions and features balanced ringing from the single
battery supply. The device is built using a 90 V com-
plementary bipolar (CBIC) process. It is available in a
44-pin PLCC package.

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