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HC-5509B3999-003 Schematic ( PDF Datasheet ) - Intersil Corporation

Teilenummer HC-5509B3999-003
Beschreibung SLIC Subscriber Line Interface Circuit
Hersteller Intersil Corporation
Logo Intersil Corporation Logo 




Gesamt 10 Seiten
HC-5509B3999-003 Datasheet, Funktion
HC-5509B3999-003
SEMICONDUCTOR
March 1996
SLIC
Subscriber Line Interface Circuit
Features
• DI Monolithic High Voltage Process
• Compatible with Worldwide PBX and CO Performance
Requirements
• Controlled Supply of Battery Feed Current with Pro-
grammable Current Limit
• Operates with 5V Positive Supply (VB+)
• Internal Ring Relay Driver and a Utility Relay Driver
• High Impedance Mode for Subscriber Loop
• High Temperature Alarm Output
• Low Power Consumption During Standby Functions
• Switch Hook, Ground Key, and Ring Trip Detection
• Selective Power Denial to Subscriber
• Voice Path Active During Power Denial
• On-Chip Op Amp for 2-Wire Impedance Matching
Applications
• Solid State Line Interface Circuit for PBX or Central
Office Systems, Digital Loop Carrier Systems
• Hotel/Motel Switching Systems
• Direct Inward Dialing (DID) Trunks
• Voice Messaging PBXs
• High Voltage 2-Wire/4-Wire, 4-Wire/2-Wire Hybrid
Ordering Information
PART NUMBER
HC9P5509B3999-003
TEMP.
RANGE (oC) PACKAGE
0 to +75 28 Ld SOIC
PKG.
NO.
M28.3
Description
The HC-5509B3999-003 telephone Subscriber Line Inter-
face Circuit integrates most of the BORSCHT functions on a
monolithic IC. The device is manufactured in a Dielectric Iso-
lation (DI) process and is designed for use as a high voltage
interface between the traditional telephone subscriber pair
(Tip and Ring) and the low voltage filtering and cod-
ing/decoding functions of the line card. Together with a sec-
ondary protection diode bridge and “feed” resistors, the
device will withstand 1000V lightning induced surges, in
plastic packages. The SLIC also maintains specified trans-
mission performance in the presence of externally induced
longitudinal currents. The BORSCHT functions that the SLIC
provides are:
Battery Feed with Subscriber Loop Current Limiting
Overvoltage Protection
Ring Relay Driver
Supervisory Signaling Functions
Hybrid Functions (with External Op-Amp)
Test (or Battery Reversal) Relay Driver
In addition, the SLIC provides selective denial of power to
subscriber loops, a programmable subscriber loop current
limit from 20mA to 60mA, a thermal shutdown with an alarm
output and line fault protection. Switch hook detection, ring
trip detection and ground key detection functions are also
incorporated in the SLIC device.
The HC-5509B3999-003 SLIC is ideally suited for line card
designs in PBX and CO systems, replacing traditional
transformer solutions.
Pinout
HC-5509B3999-003 (SOIC)
TOP VIEW
AG 1
VB+ 2
C1 3
F1 4
F0 5
RS 6
SHD 7
GKD 8
TST 9
ALM 10
ILMT 11
OUT 1 12
-IN 1 13
TIP 14
28 BG
27 VB-
26 RF
25 TF
24 VFB
23 RD
22 DG
21 PR
20 PRI
19 VTX
18 C2
17 VRX
16 RFS
15 RING
TRUTH TABLE
F1 F0
ACTION
0 0 Normal Loop Feed
0 1 RD Active
1 0 Power Down Latch RESET
1 0 Power on RESET
1 1 Loop Power
Denial Active
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright © Harris Corporation 1996
1
File Number 4126






HC-5509B3999-003 Datasheet, Funktion
HC-5509B3999-003
Pin Descriptions (Continued)
SOIC
SYMBOL
DESCRIPTION
20 PRI A TTL compatible input used to control PR. PRI active High = PR active low.
21 PR An active low open collector output. Can be used to drive a Polarity Reversal Relay.
22 DG Digital Ground - To be connected to zero potential. Serves as a reference for all digital inputs and outputs on
the SLIC.
23 RD Ring Relay Driver - An active low open collector output. Used to drive a relay that switches ringing signals onto
the 2-Wire line.
24 VFB Feedback input to the tip feed amplifier; may be used in conjunction with transmit output signal and the spare
op amp to accommodate 2-Wire line impedance matching.
25 TF2 Tip Feed - A low impedance analog output connected to the TIP terminal through a feed resistor. Functions
with the RF terminal to provide loop current, and to feed voice signals to the telephone set and to sink longitu-
dinal currents. Must be tied to TF1.
NA TF1 Tie directly to TF2 in the PLCC application.
26 RF1 Ring Feed - A low impedance analog output connected to the RING terminal through a feed resistor. Functions
with the TF terminal to provide loop current, feed voice signals to the telephone set, and to sink longitudinal
currents. Tie directly to RF2.
NA RF2 Tie directly to RF1 in the PLCC application.
27 VB- The battery voltage source. The most negative supply.
28 BG Battery Ground - To be connected to zero potential. All loop current and some quiescent current flows into this
ground terminal.
NC No internal connection.
NOTE:
1. All grounds (AG, BG, DG) must be applied before VB+ or VB-. Failure to do so may result in premature failure of the part. If a user wishes
to run separate grounds off a line card, the AG must be applied first.
6

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