HC5526_03 Datasheet, PDF (3/20 Pages) Intersil Corporation – ITU CO/PABX SLIC with Low Power Standby

Block Diagram
RINGRLY
DT
DR
TIP
RING
HPT
HPR
RING RELAY
DRIVER
RING TRIP
DETECTOR
2-WIRE
INTERFACE
V_BAT
V_CC
V_EE
AGND
BGND
BIAS
HC5526
LOOP CURRENT
DETECTOR
GROUND KEY
DETECTOR
4-WIRE
INTERFACE
VF SIGNAL
PATH
DIGITAL
MULTIPLEXER
V_TX
RSN
E0
E1
C1
C2
DET
R_D
R_DC
RSG
3