HC5521CQ INTERSIL [Intersil Corporation], HC5521CQ Datasheet
HC5521CQ
Manufacturer Part Number
HC5521CQ
Description
SLIC Subscriber Line Interface Circuit
Manufacturer
INTERSIL [Intersil Corporation]
Datasheet
1.HC5521CQ.pdf
(1 pages)
ADVANCE INFORMATION
January 1997
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright
Features
• Normal and Reversed DC Feed
• 30mA Current Limit
• Ringing, Test-In, and Test-Out Relay Drivers
• Ground Key Detector with Seperate Logic Output
• Thermal Shutdown Protection with Alert Signal
• On-Hook Transmission
• Selectable Transmit and Receive Gain Setting
• Selectable 2-Wire Impedance Matching
• Zero Crossing Ring Trip Detection and Ring Relay
• Parallel Digital Control and Status Monitoring
• Protection Resistors inside Feedback Loop allows the
Applications
• PABX/CO Line Circuits
Block Diagram
Release
use of PTC Devices without Impact on Longitudinal
Balance
©
Harris Corporation 1997
S E M I C O N D U C T O R
GKDO
D4RCI
D2PRI
D3PDI
BGND
RGND
SHDO
D5TBI
AGND
D6TAI
V
V
V
BAT
TB
CC
TA
EE
TEST CONTROL
BIAS
LOGIC
CP
REFERENCE
BATTERY
RDC
CDC
4-35
RX
Description
The HC5521 is a Monolithic Subscriber Line Interface Circuit
(SLIC) for Analog Subscriber Line cards in Central Office
and PABX switches.
The HC5521 provides a comprehensive set of features for
these applications including loop reversal, ground key detec-
tion, zero crossing ring relay operation, long loop drive and a
mutually independent setting of the receive and transmit
gains, and the two-wire impedance synthesis. An option is
also provided for eliminating transhybrid balance on-chip.
Advanced power management features combined with a
small 44 lead MQFP package allow significant board space
to be freed up for additional line circuits.
The HC5521 is fabricated in a Harris state of the art Bonded
Wafer High Voltage process, providing freedom from tradi-
tional JI latch-up phenomena without the use of additional
power supply filtering components or substrate tie connec-
tions. The very low parasitics and leakages associated with
this process provide an exceptionally flat performance over
frequency and temperature.
Ordering Information
HC5521CQ
HC5521CM
PART NUMBER
4-WIRE INTERFACE / Z
TX
Subscriber Line Interface Circuit
MANAGEMENT
TX4W
INTERFACE
CONTROL
POWER
2-WIRE
RING
RN
RANGE (
TEMP.
0 to 70
0 to 70
0
HC5521
KZO
o
C)
44 Ld MQFP
44 Ld PLCC
TIP
TIPSEN
RINGSEN
RING
RD
RBH
RBL
CRTD
RPSB
RPSR
RPST
RPSG
PACKAGE
File Number
Q44.10x10
N44.65
PKG. NO.
SLIC
4265