HC-5524 Datasheet, PDF (7/9 Pages) Intersil Corporation – EIA/ITU 24V PABX SLIC with 25mA Loop Feed

HC-5524
Functional Diagram
R
25
TF
TF _-
+
14
TIP
15
RING
16
RFS
R
R
R
R
4.5kΩ
100kΩ
100kΩ
100kΩ
100kΩ
4.5kΩ
26
RF
R = 108kΩ
-
+
RF
DIP OR SOIC
V_RX
OUT1
R
17
12
-IN1
13
V_FB
24
2R
-
+
OP AMP
R/2
RF1
2R
2R
- ^TA
+
2R
SHD
25kΩ
- ^LA
+
25kΩ
90kΩ
RTD
GKD
90kΩ
90kΩ
90kΩ
3
C1
VB/2
REF
18
C2
FAULT
DET
-
+
GM
V_TX
V_B+
19
2
DG
22
AG
1 ₂₈
BG
BIAS
NETWORK
27
V_B-
THERM
LTD
SH
TSD
GK
RF₂
11
I_LIMIT
RFC
4
F1
5
F0
6
RS
9
TST
20
PRI
21
PR
23
RD
7
SHD
8
GKD
10
ALM
38
TF2
39
TF1
22
TIP
24
RING
25
RFS
42
RF2
41
RF1
R
TF _-
+
R
R
R
R
4.5kΩ
PLCC
V_RX
OUT 1
-IN 1
V_FB
R
27
19
20
37
2R
-
+
OP AMP
R/2
RF1
2R
2R
TA
-
+
2R
SHD
100kΩ
100kΩ
100kΩ
100kΩ
25kΩ
LA
-
+
25kΩ
90kΩ
RTD
GKD
4.5kΩ
90kΩ
90kΩ
RF
-
+
90kΩ
4
C1
VB/2
REF
31
C2
FAULT
DET
GM _-
+
V_TX
V_B+
32
3
DG
35
AG
2
44
BIAS
NETWORK
43
8
9
SH
10
THERM
LTD
TSD
13
33
34
GK
36
11
12
RFC
17
BG
V_B-
F1
F0
RS
TST
PRI
PR
RD
SHD
GKD
ALM
RF₂
18
I_LIMIT
NOTES:
6. R = 108kΩ.
7. NC = 1, 5, 6, 7, 14, 15, 16, 21,
23, 26, 28, 29, 30, 40.
7