HC5503 Intersil Corporation, HC5503 Datasheet - Page 12

• Manufacturer Part Number: HC5503
• Description: Low Cost 24V SLIC For PABX/Key Systems
• Manufacturer: Intersil Corporation

Functional Block Diagram
Pinouts
2-WIRE
VOLTAGE
LOOP
RING
TIP
RING
V
RING
RFS
V
BAT
TIP
DG
BG
RD
RS
RF
V
C1
CC
TF
BAT
V
1/2 RING
10
11
12
BAT
1
2
3
4
5
6
7
8
9
RELAY
PROTECTION
SECONDARY
1/2 RING
HC5503 (SOIC)
RELAY
RING COMMAND
POWER DENIAL
TOP VIEW
12
RING SYNC
RFS
150
150
RING
V
PD
24
23
22
21
20
19
18
17
16
15
14
13
TIP
RC
RD
BAT
BG
RS
RF
TF
TX
AG
C2
R
N/C
N/C
N/C
N/C
RC
PD
N/C
SHD
X
SLIC MICROCIRCUIT
CURRENT
BATTERY
CONTROL
LIMITER
HC5503
LOOP
FEED
FIGURE 7.
RING
RING
TRIP
V
N/C
DG
RD
RS
C1
CC
TF
DRIVERS
LINE
10
11
MONITORING
5
6
8
7
9
+1
-1
LOOP
12
4
13
3
HC5503 (PLCC)
+
-
2
14
TOP VIEW
DIFF
AMP
15
1
28
16
SHD
TX
RX
27
17
SWITCH HOOK
DETECTION
TRANSMIT
OUTPUT
RECEIVE
INPUT
26
18
25
24
23
22
21
20
19
RX
N/C
N/C
N/C
N/C
N/C
RC