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參數(shù)資料
| 型號： | LUCL8574DP-DT |
| 英文描述： | L8574D Resistive Subscriber Line Interface Circuit(SLIC), Ring Relay,and Protector(SRP)for Long Loop and TR-57 Applications |
| 中文描述： | L8574D電阻用戶線接口電路（SLIC），環(huán)繼電器和保護(hù)（SRP）的為遠(yuǎn)距離和TR - 57應(yīng)用 |
| 文件頁數(shù)： | 6/36頁 |
| 文件大?。?/td> | 489K |
| 代理商： | LUCL8574DP-DT |
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6
Lucent Technologies Inc.
Data Sheet
October 1998
Relay, and Protector (SRP) for Long Loop and TR-57 Applications
L8574D Resistive Subscriber Line Interface Circuit (SLIC), Ring
Pin Information
(continued)
Table 1. Pin Descriptions
(continued)
On the printed-wiring board (PWB), make the leads to FGND and V
reasons. Also, maximize the amount of PWB copper on all leads connected to this device for the lowest operating
temperature.
BF
as wide as possible for thermal and electrical
Absolute Maximum Ratings
(@ T
A
= 25
°
C)
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are abso-
lute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess
of those indicated in the operational sections of this data sheet. Exposure to absolute maximum ratings for
extended periods can adversely affect device reliability.
Notes:
Analog voltages (V
CCA
, V
BAT1
, and V
BAT2
) are referenced to AGND, and digital (logic) voltages (V
DD
) are referenced to DGND.
The IC can be damaged unless all ground connections are applied before, and removed after, all other connections. Furthermore, when power-
ing the device, the user must guarantee that no external potential creates a voltage on any pin of the device that exceeds the device ratings. For
example, inductance in a supply lead could resonate with the supply filter capacitor to cause a destructive overvoltage.
Pin
33
34
35
36
38
40
41
42
Symbol
CLIM
V
BAT2
AGND
V
CCA
PTA
V
BAT1
XMT
TS
Type
I
—
—
—
—
—
O
I
Name/Function
Connect a 0.1
Negative high-voltage power supply.
Ground return for analog circuitry.
+5 V Analog dc Supply.
+5 V supply for analog circuitry.
Protected Tip A.
Connect to PT via an external coupling network.
Office Battery Supply.
Negative high-voltage power supply.
Transmit Signal Output.
Transmit amplifier output to codec.
Tip Sense.
Negative (–) input of transmit op amp. Connect one high-value resis-
tor between TS and the Tip of the loop and another high-value resistor between
TS and XMT.
Ring Sense.
Positive (+) input of the transmit op amp. Connect one high-value
resistor between RS and the Ring of the loop and another high-value resistor
between RS and AGND (see the application diagram, Figure 5).
Receive Signal Input (–).
The differential current flowing from PT to PR is –200
times the voltage applied to RCVN divided by the impedance connected
between IRCV and AGND.
Current Limiter Capacitor.
Office Battery Supply.
Analog Ground.
μ
F capacitor from this pin to pin V
BF
.
43
RS
I
44
RCVN
I
Parameter
Symbol
—
V
BAT1
V
BAT2
—
—
—
—
—
T
stg
—
—
Min
–0.5
–63
–63
–0.5
—
–0.5
—
–40
–40
5
—
Typ
—
—
—
—
±
20
—
±
35
—
—
—
±
3
Max
7.0
0.5
0.5
Unit
V
V
V
V
mA
V
mA
°
C
°
C
%
V
+5 V dc Supplies (V
CCA
& V
DD
)
Office Battery Supply
Logic Input Voltage
Logic Input Clamp Diode Current, per Pin
Logic Output Voltage
Logic Output Current, per Pin (excluding relay driver)
Operating Temperature Range
Storage Temperature Range
Relative Humidity Range
Ground Potential Difference (DGND to AGND)
V
DD
+ 0.5
—
V
DD
+ 0.5
—
125
125
95
—
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