HC55120, HC55121, HC55130, HC55131, HC55140,
HC55141, HC55142, HC55143, HC55150, HC55151
®
Data Sheet
June 2002
FN4659.10
Low Power UniSLIC14 Family
Features
The UniSLIC14 is a family of Ultra Low Power SLICs. The
feature set and common pinouts of the UniSLIC14 family
positions it as a universal solution for: Plain Old Telephone
Service (POTS), PBX, Central Office, Loop Carrier, Fiber in
the Loop, ISDN-TA and NT1+, Pairgain and Wireless Local
Loop.
• Ultra Low Active Power (OHT) < 60mW
• Single/Dual Battery Operation
• Automatic Silent Battery Selection
• Power Management/Shutdown
• Battery Tracking Anti Clipping
• Single 5V Supply with 3V Compatible Logic
The UniSLIC14 family achieves its ultra low power operation
through: Its automatic single and dual battery selection (based
on line length) and battery tracking anti clipping to ensure the
maximum loop coverage on the lowest battery voltage. This
architecture is ideal for power critical applications such as
ISDN NT1+, Pairgain and Wireless local loop products.
• Zero Crossing Ring Control
- Zero Voltage On/Zero Current Off
• Tip/Ring Disconnect
• Pulse Metering Capability
• 4 Wire Loopback
• Programmable Current Feed
• Programmable Resistive Feed
• Programmable Loop Detect Threshold
The UniSLIC14 family has many user programmable features.
This family of SLICs delivers a low noise, low component
count solution for Central Office and Loop Carrier universal
voice grade designs. The product family integrates advanced
pulse metering, test and signaling capabilities, and zero
crossing ring control.
• Programmable On-Hook and Off-Hook Overheads
• Programmable Overhead for Pulse Metering
• Programmable Polarity Reversal Time
• Selectable Transmit Gain 0dB/-6dB
• 2 Wire Impedance Set by Single Network
• Loop and Ground Key Detectors
• On-Hook Transmission
The UniSLIC14 family is designed in the Intersil “Latch” free
Bonded Wafer process. This process dielectrically isolates the
active circuitry to eliminate any leakage paths as found in our
competition’s JI process. This makes the UniSLIC14 family
compliant with “hot plug” requirements and operation in harsh
outdoor environments.
• Common Pinout
• HC55121
- Polarity Reversal
Block Diagram
• HC55130
- -63dB Longitudinal Balance
RRLY
STATE
DECODER
AND
C1
RING AND TEST
RELAY DRIVERS
• HC55140
- Polarity Reversal
- Ground Start
- Line Voltage Measurement
- 2 Wire Loopback
- -63dB Longitudinal Balance
C2
C3
TRLY1
TRLY2
DETECTOR
C4
C5
LOGIC
ZERO CURRENT
CROSSING
RING TRIP
DETECTOR
DT
LOOP CURRENT
DETECTOR
SHD
DR
GKD/LOOP LENGTH
DETECTOR
GKD_LVM
• HC55142
- Polarity Reversal
- Ground Start
CRT_REV_LVM
POLARITY
REVERSAL
- Line Voltage Measurement
ILIM
RSYNC_REV
ROH
CDC
RDC_RAC
RD
- 2.2V
Pulse Metering
RMS
LINE FEED
CONTROL
TIP
- 2 Wire Loopback
2-WIRE
• HC55150
- Polarity Reversal
- Line Voltage Measurement
RING
INTERFACE
BGND
AGND
- 2.2V
- 2 Wire Loopback
Pulse Metering
V
RMS
TX
4-WIRE INTERFACE
VF SIGNAL PATH
V
RX
PTG
V
BATTERY
SELECTION
AND
BIAS
NETWORK
BH
ZT
Related Literature
• AN9871, User’s Guide for UniSLIC14 Eval Board
C
H
V
BL
PULSE METERING
SIGNAL PATH
V
CC
• AN9903, UniSLIC14 and TI TCM38C17
SPM
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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Copyright © Intersil Americas Inc. 2002. All Rights Reserved
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