HC5503PRC_14 Datasheet, PDF (7/11 Pages) Intersil Corporation – Low Cost SLIC For Large Telecom Switches

HC5503PRC
Functional Diagram
RS
RING SYNC
RC
RING COMMAND
RD
TIP
1/2 RING
R_P
TIP
RELAY
R_S
2-WIRE
TF
LOOP
V_B-
SECONDARY
PROTECTION
V_B-
RING
RING
VOLTAGE
V_B-
1/2 RING
RELAY
BG
RF
RFS
R_S
R_P
RING
PD
POWER DENIAL
R_S: 100Ω; 1/2W to 2W depending on surge requirements
R_P: 50Ω; 1/2W to 2W depending on surge requirements
RING
CONTROL
RING
TRIP
LOOP
MONITORING
SHD _{SWITCH HOOK}
DETECTION
DIFF
AMP
+
TX TRANSMIT
OUTPUT
BATTERY
FEED
LOOP
CURRENT
LIMITER
+1
LINE
DRIVERS
-1
SLIC MICROCIRCUIT
+
OP
AMP
OUT
+IN
-IN
RX _RECEIVE
INPUT
7