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Número de pieza
componentes Descripción
ATTL7554AP Ver la hoja de datos (PDF) - Agere -> LSI Corporation
Número de pieza
componentes Descripción
Fabricante
ATTL7554AP
L7554 Low-Power SLIC
Agere -> LSI Corporation
ATTL7554AP Datasheet PDF : 28 Pages
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L7554 Low-Power SLIC
Data Sheet
March 1997
Applications
R
PROG
66.8 k
Ω
R
LCTH
24.9 k
Ω
V
CC
0.1 µF
C
CC
3
14
I
PROG
DCOUT
12
LCTH
8
V
CC
V
BAT
C
BAT
0.1 µF
15
V
BAT
V
REG
TIP R
PT
20
Ω
250 V PROT
L7581
RELAY
30
PT
L7554
SLIC
RING R
PR
20
Ω
R
TS1
402
Ω
V
RING
C
RTS2
0.27 µF
R
TS2
274 k
Ω
16
PR
R
TSP
2.0 M
Ω
32
RTSP
C
RTS1
0.022 µF
31
RTSN
R
TSN
2.0 M
Ω
CF2
CF1
18
19
C
F1
0.47 µF
AGND AGND BGND
24 25
27
V
BAT
C
F2
0.1 µF
V
TX
29
TXI
11
VITR
20
CB2
0.1 µF
R
T2
18.7 k
Ω
R
X
28.0 k
Ω
VFXIN
–
GSX
R
T1
R
HB1
VFXIP
+
DX
86.6 k
Ω
28.0 k
Ω
R
RCV
RCVP
9
48.7 k
Ω
PWROP
DR
10
RCVN
B2 35
B1 36
B0 23
R
GP
20.0 k
Ω
C
GP
330 pF
CONTROL
INPUTS
PWRON
GSR
FSX
FSR
MC
PD
CLKSEL
A/µ
PCM
HIGHWAY
SYNCH
AND
CLOCK
CONTROL
INPUTS
NLC 34
SUPERVISION
NRDET 33
OUTPUTS
T7513
CODEC
12-2573 (C)
Figure 11. Basic Loop Start Application Circuit Using T7513 Type Codec
LOOP START
APPLICATION CIRCUIT
V
CC
22
RGDET
21
ICM
RGDET
100 k
Ω
82.5 k
Ω
RICM2
0.47 µF
CICM
Figure 12. Ground Start Application Circuit
12-2821 (C)
14
Lucent Technologies Inc.
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