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HC1-5509A1-5

SLIC Subscriber Line Interface Circuit

Intersil

HC1-5509A1-5 Datasheet PDF : 10 Pages

1 2 3 4 5 6 7 8 9 10

HC-5509A1

PRELIMINARY May 1997

Features

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SLIC

Subscriber Line Interface Circuit

Description

• DI Monolithic High Voltage Process

• Compatible with Worldwide PBX and CO Performance

Requirements

• Controlled Supply of Battery Feed Current with Programmable

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

The HC-5509A1 telephone Subscriber Line Interface Circuit

integrates most of the BORSCHT functions on a monolithic

IC. The device is manufactured in a Dielectric Isolation (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 coding/decoding func-

tions of the line card. Together with a secondary protection

diode bridge and “feed” resistors, the device will withstand

1000V lightning induced surges, in plastic packages. The

SLIC also maintains specified transmission performance in

the presence of externally induced longitudinal currents. The

BORSCHT functions that the SLIC provides are:

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 PBX’s

• High Voltage 2W/4W, 4W/2W Hybrid

• 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

Ordering Information

PART NUMBER

HC1-5509A1-5

HC1-5509A1-9

HC3-5509A1-5

HC3-5509A1-9

HC4P5509A1-5

HC4P5509A1-9

HC9P5509A1-5

TEMP. RANGE

0o to +75oC

-40o to +85oC

0o to +75oC

-40o to +85oC

0o to +75oC

-40o to +85oC

0o to +75oC

PACKAGE

28 Lead Ceramic DIP

28 Lead Plastic DIP

44 Lead PLCC

28 Lead SOIC

In addition, the SLIC provides selective denial of power to

subscriber loops, a programmable subscriber loop current

limit from 20 to 60mA, a thermal shutdown with an alarm out-

put and line fault protection. Switch hook detection, ring trip

detection and ground key detection functions are also incor-

porated in the SLIC device.

The HC-5509A1 SLIC is ideally suited for line card designs

in PBX and CO systems, replacing traditional transformer

solutions.

Pinouts

HC-5509A1 (PDIP, CDIP, 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 C2

27 VB-

26 RF

25 TF

24 VFB

23 RD

22 BG

21 PR

20 PRI

19 VTX

18 LAO

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; follow proper IC Handling Procedures.

1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc.

8-131

HC-5509A1 (PLCC)

TOP VIEW

N/C

SHD

GKD

TST

ALM

N/C

6 5 4 3 2 1 44 43 42 41 40

18 19 20 21 22 23 24 25 26 27 28

TF2

VFB

PRI

VTX

LAO

N/C

File Number 3567.1

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