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參數(shù)資料
| 型號： | L3235 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | CAP CER 1.5UF 100V 10% X7R 1812 |
| 中文描述： | 高度集成的用戶接口盒針對交換機與關(guān)鍵系統(tǒng)應(yīng)用 |
| 文件頁數(shù)： | 10/25頁 |
| 文件大?。?/td> | 3164K |
| 代理商： | L3235 |
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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| L34040 | Optoelectronic |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L3235-D2 | 功能描述:射頻無線雜項 SLIC PABX & Key Sys RoHS:否 制造商:Texas Instruments 工作頻率:112 kHz to 205 kHz 電源電壓-最大:3.6 V 電源電壓-最小:3 V 電源電流:8 mA 最大功率耗散: 工作溫度范圍:- 40 C to + 110 C 封裝 / 箱體:VQFN-48 封裝:Reel |
| L3235-D2/TR | 功能描述:電信集成電路 SLIC PABX & Key Sys RoHS:否 制造商:STMicroelectronics 類型:Telecom IC - Various 工作電源電壓:4.75 V to 5.25 V 電源電流: 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFP-100 封裝:Tray |
| L3235N | 功能描述:電信集成電路 SLIC PABX & Key Sys RoHS:否 制造商:STMicroelectronics 類型:Telecom IC - Various 工作電源電壓:4.75 V to 5.25 V 電源電流: 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFP-100 封裝:Tray |
| 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 |
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