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參數(shù)資料
| 型號： | L3235T |
| 英文描述： | Subscriber Line Interface Circuit |
| 中文描述： | 用戶線接口電路 |
| 文件頁數(shù)： | 11/26頁 |
| 文件大?。?/td> | 457K |
| 代理商： | L3235T |
DESCRIPTION
Circuit description
The L3235 Subscriber Line Interface Circuit
(SLIC) is a bipolar integrated circuit in 60V tech-
nologyoptimized for PABX application.
The L3235 supplies a line feed voltage with a cur-
rent limitation which can be modified by an exter-
nal resistor(RLIM).
The SLIC incorporates loop currents, ground key
detectionfunctions with an externallyprogramma-
ble constant time.
The two to four wires and four to two wires voice
frequency signal conversion is performed by the
L3235 and the line terminating and the balancing
impedancesare externallyprogrammable.
The device integrates an automatic power limita-
tion circuit. In short loop conditionthe extra power
is dissipated on one externaltransistor (Text).
This aproach allows to assembly the L3235 in a
low cost standardplastic PLCC28package.
The chip is protected by thermal protection at
Tj = 150
°
C.
The SLIC is able to givea powerup commandfor
Combo in off hook condition and an enable logic
for solidstate ringing injectorL3234.
The L3235 packageis 28 pin plastic PLCC.
The L3235 has been designed to operate
togheter
with
L3234
BORSHT function without any electromechanical
ringing relay (see theapplication circuit fig. 16).
performing
complete
PLCC28
L3235
Subscriber Line Interface Circuit
PINCONNECTION
ABSOLUTE MAXIMUMRATINGS
Symbol
V
BAT
V
CC
V
SS
T
j
T
stg
OPERATING RANGE
Parameter
Value
-54
5.5
-5.5
150
-55 to +150
Unit
V
V
V
°
C
°
C
Battery Voltage
Positive Supply Voltage
Negative Supply Voltage
Max. Junction Temperature
Storage Temperature
Symbol
V
BAT
V
CC
V
SS
T
op
Parameter
Min.
-52
4.75
-5.25
0
-40
Max.
-24
5.25
-4.75
70
85
130
Unit
V
V
V
°
C
°
C
°
C
Battery Voltage
Positive Supply Voltage
Negative Supply Voltage
Operating Temperature for
L3235
L3235T
T
j
Max Junction Operating Temperature
Note:
Operating ranges definethose limitsbetween which the functionality ofthe device is guaranteed.
L3234 - L3235
11/26
相關PDF資料 |
PDF描述 |
|---|---|
| L3234 | CAP CER 1.5UF 50V 20% X7R 1812 |
| L3235N | HIGHLY INTEGRATED SLIC KIT TARGETED TO PABX AND KEY SYSTEM APPLICATIONS |
| L3235 | CAP CER 1.5UF 100V 10% X7R 1812 |
| L34024 | Optoelectronic |
| L34035 | Optoelectronic |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| L323C | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:THYRISTOR MODULE|BRIDGE|HALF-CNTLD|CA|280V V(RRM)|15A I(T) |
| L323ED | 制造商:Kingbright Corporation 功能描述:LED Uni-Color Orange 625nm 2-Pin |
| L323F | 制造商:CRYDOM 制造商全稱:Crydom Inc., 功能描述:Power Modules |
| L323GD | 制造商:Kingbright Corporation 功能描述:LED Uni-Color Green 565nm 2-Pin |
| L-323GD | 制造商:Kingbright Corporation 功能描述: |
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