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參數(shù)資料
| 型號： | L8551 |
| 廠商： | Lineage Power |
| 英文描述： | Low-Power SLIC(低功耗用戶線接口（SLIC）) |
| 中文描述： | 低功耗用戶接口（低功耗用戶線接口電路（SLIC）） |
| 文件頁數(shù)： | 4/32頁 |
| 文件大?。?/td> | 526K |
| 代理商： | L8551 |
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4
Lucent Technologies Inc.
Data Sheet
March 1997
L8551 Low-Power SLIC
Pin Information
12-2548.b (C)
Figure 2. Pin Diagram (32-Pin PLCC)
B1
XMT
NLC
NRDET
RTSP
RTSN
PT
5
7
8
9
10
11
12
1314
15
6
4
3
2
1
32
31
16
18
19
20
17
30
27
26
25
24
23
22
21
28
I
D
A
A
V
B
29
SN
BGND
I
P
RCVN
RCVP
V
CC
LCTH
V
BAT
DCOUT
PR
CF2
CF1
T
32-PIN PLCC
12-2548.e (C)
Figure 3. Pin Diagram (44-Pin PLCC)
SN
B1
XMT
NLC
NRDET
RTSP
RTSN
PT
RCVN
RCVP
V
CC
LCTH
DCOUT
V
BAT
PR
7
9
10
11
12
13
14
15
16
17
8
6
4
3
2
1
44
43
42
41
40
5
18
20
21
22
23
24
25
26
27
28
19
39
37
36
35
34
33
32
31
30
29
I
P
38
I
C
B
D
A
A
B
V
C
R
T
44-PIN PLCC
Table 1. Pin Descriptions
32-Pin
PLCC
2
44-Pin
PLCC
3
Symbol
Type
Description
I
PROG
I
Current-Limit Program Input.
A resistor to DCOUT sets the dc current limit
of the device.
+5 V Power Supply.
Receive ac Signal Input (Noninverting).
This high-impedance input con-
trols the ac differential voltage on Tip and Ring.
Receive ac Signal Input (Inverting).
This high-impedance input controls the
ac differential voltage on Tip and Ring.
Loop Closure Threshold Input.
Connect a resistor to DCOUT to set off-
hook threshold.
dc Output Voltage.
This output is a voltage that is directly proportional to the
absolute value of the differential Tip/Ring current.
Battery Supply.
Negative high-voltage power supply.
5
6
8
9
V
CC
RCVP
—
I
7
10
RCVN
I
8
12
LCTH
I
9
14
DCOUT
O
10
15
V
BAT
—
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