參數(shù)資料
型號(hào)： L8576B
英文描述： Dual Ringing SLIC
中文描述： 雙振鈴用戶接口
文件頁數(shù)： 1/26頁
文件大?。?/td> 583K
代理商： L8576B
Data Sheet
May 2001
L8576B Dual Ringing SLIC
Features
I
Two SLIC channels for multiple tip/ring interfaces
I
On-chip balanced ringing generator, no ring relay
required
I
Single battery operation or optional automatic bat-
tery switch
I
Quiet battery reversal for on-hook signaling
I
Disconnect state
I
Distortion-free, on-hook transmission
I
24 mA loop current limiter
I
Ring trip detector
I
Switchhook detector
I
Immune to channel crosstalk and impulse noise
I
Allows rail overvoltages for ease of protection
I
Thermal protection
I
44-pin, surface-mount, plastic package (PLCC)
Applications
I
POTS for ISDN
I
Terminal adapters (TA)
I
Digital loop carrier (DLC) systems
I
PABX
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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