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參數(shù)資料
| 型號(hào)： | L3235N |
| 英文描述： | HIGHLY INTEGRATED SLIC KIT TARGETED TO PABX AND KEY SYSTEM APPLICATIONS |
| 中文描述： | 高度集成的用戶接口盒針對(duì)交換機(jī)與關(guān)鍵系統(tǒng)應(yīng)用 |
| 文件頁數(shù)： | 10/25頁 |
| 文件大?。?/td> | 3164K |
| 代理商： | L3235N |
DESCRIPTION
Circuit description
The L3235N Subscriber Line Interface Circuit
(SLIC) is a bipolar integrated circuit in 60V tech-
nology optimized for PABX application.
The L3235N supplies a line feed voltage with a
current limitation which can be modified by an ex-
ternal resistor (RLIM).
The SLIC incorporates loop currents, ground key
detection functions with an externally programma-
ble constant time.
The two to four wires and four to two wires voice
frequency signal conversion is performed by the
L3235N and the line terminating and the balanc-
ing impedances are externally programmable.
The device integrates an automatic power limita-
tion circuit. In short loop condition the extra power
is dissipated on one external transistor (Text).
This aproach allows to assembly the L3235N in a
low cost standard plastic TQFP44 package.
The chip is protected by thermal protection at
Tj = 150
°
C.
The SLIC is able to give a power up command for
Combo in off hook condition and an enable logic
for solid state ringing injector L3234.
The L3235N package is 44 pin plastic TQFP.
The L3235N has been designed to operate
togheter
with
L3234
BORSHT function without any electromechanical
ringing relay (see the application circuit fig. 16).
performing
complete
TQFP44
L3235N
Subscriber Line Interface Circuit
1
2
3
5
6
4
7
8
9
10
17
11
18
19
20
21
22
44
43
42
41
39
40
38
37
36
35
34
28
27
26
24
23
25
33
32
31
29
30
N.C.
AGND
BGND
N.C.
N.C.
CAC
RPC
N.C.
TX
ZB
ZA
R
V
C
R
N
N
V
S
I
N
V
N
B
R
G
N
N
T
V
b
R
N
N
Z
V
N.C.
LIM
RNG
N.C.
SBY
PU
CS
N.C.
OH
GDK
N.C.
D99TL456
12
13
14
15
16
PIN CONNECTION
ABSOLUTE MAXIMUM RATINGS
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
T
j
Parameter
Min.
-52
4.75
-5.25
0
Max.
-24
5.25
-4.75
70
130
Unit
V
V
V
°
C
°
C
Battery Voltage
Positive Supply Voltage
Negative Supply Voltage
Operating Temperature for
L3235N
Max Junction Operating Temperature
Note:
Operating ranges define those limits between which the functionality of the device is guaranteed.
L3234 - L3235N
10/25
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L3235N-TR | 制造商:STMicroelectronics 功能描述:SLIC 49DB 77MA 5V/100V 44TQFP - Tape and Reel |
| L3235T | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Subscriber Line Interface Circuit |
| 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 |
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