HC-5504B Intersil Corporation, HC-5504B Datasheet - Page 7

• Manufacturer Part Number: HC-5504B
• Description: Eia/itu Pabx Slic With 40ma Loop Feed
• Manufacturer: Intersil Corporation

Schematic Diagram
SENSE
FEED
RING
RING
TIP
10
RF
TF
9
1
3
2
V
BAT
V
V
BAT
RING FEED
B
+
R
R
R
R
R
R
R
R
R
R
R
10
16
15
7
8
9
3
4
1
2
22
I B4
I B5
A-300
AMP
TIP FEED
A-400
AMP
-
V
+
R
V
BAT
C3
23
5
57
B
+
V B +
+
RX
-
21
R
Q D3 Q D36
21
V BAT
R
17
V B2
R
11
V B2
V BAT/2 REFERENCE
-
+
+
-
C4
22
R
12
A-200
LONG’L
I / V AMP
A-100
TRANSV’L
I/V AMP
I B1 I B2 I B3 I B4 I B5 I B6 I B7 I B8
R
5
I B6
Pin Numbers for DIP/SOIC Package
I B7
SLIC FUNCTIONAL SCHEMATIC
V
11
BAT
V
V B +
BAT
R
R
V B +
13
R
14
V
V
6
BAT
BAT
VOLTAGE AND CURRENT
HC-5504B
GND
BAT
12
R
BIAS NETWORK
20
R
R
18
19
TX
24
GND
ANA
23
V B +
Q D27
+
LOAD CURRENT
LIMITING
RING TRIP DETECTOR
+
SWITCH HOOK
DETECTOR
V B +
GND
V
DIG
BAT
6
V
I B8
I B6
BAT
I B9 I B10 I B11
I B2
V
BAT
V
4
B
Q D28
+
V B4
-
5V
-
+
V B5
V B1
V B5
V B1
V B2
V B3
V B4
V B5
+5V
-
THERMAL
GND SHORTS
LIMITING
CURRENT
LIMITING
20
+
V BAT
I B1
V B3
+
19
-
RS
A-500
OP AMP
5V I B10
I B3
7
AND LOGIC
INTERFACE
GK
SH
RFC
V BAT
V B +
STTL
V
BAT
V
B
RD
8
+
OUT
18
GKD
SHD
C2
RC
PD
14
17
13
16
15