1

®

FN2884.7

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 321-724-7143

Copyright © Intersil Americas Inc. 2003. All Rights Reserved.

All other trademarks mentioned are the property of their respective owners.

HC-5502B

EIA/ITU PABX SLIC with 30mA Loop Feed

The Intersil SLIC incorporates many of the BORSHT

functions on a single IC chip. This includes DC battery feed,

a ring relay driver, supervisory and hybrid functions. This

device is designed to maintain transmission performance in

the presence of externally induced longitudinal currents.

Using the unique Intersil dielectric isolation process, the

SLIC can operate directly with a wide range of station battery

voltages.

The SLIC also provides selective denial of power. If the PBX

system becomes overloaded during an emergency, the SLIC

will provide system protection by denying power to selected

subscriber loops.

The Intersil SLIC is ideally suited for the design of new digital

PBX systems, by eliminating bulky hybrid transformers.

Features

• Monolithic Integrated Device

• DI High Voltage Process

• Compatible With Worldwide PBX Performance

Requirements

• Controlled Supply of Battery Feed Current for Short Loops

(30mA)

• Internal Ring Relay Driver

• Low Power Consumption During Standby

• Switch Hook, Ground Key and Ring Trip Detection

Functions

• Selective Denial of Power to Subscriber Loops

Applications

• Solid State Line Interface Circuit for Analog and Digital

PBX Systems

• Direct Inward Dial (DID) Trunks

• Voice Messaging PBXs

• Related Literature

- AN549, The HC-5502S/4X Telephone Subscriber Line

Interface Circuits (SLIC)

- AN571, Using Ring Sync with HC-5502A and HC-5504

SLICs

Part Number Information

PART NUMBER

TEMP. RANGE

PACKAGE

PKG. DWG. #

HC3-5502B-5

0 to 75

24 Ld PDIP

E24.6

HC4P5502B-5

0 to 75

28 Ld PLCC

N28.45

Pinouts

HC-5502B (PDIP)

TOP VIEW

HC-5502B (PLCC)

TOP VIEW

1

2

3

4

5

6

7

8

9

10

11

12

16

17

18

19

20

21

22

23

24

15

14

13

TIP

RING

C1*

C3

DG

RS

TF

RF

BG

TX

C4

+IN

C2

AG

OUT

-IN

RC

PD

GKD

SHD

RD

RX

+IN

N/C

OUT

C2

RC

-IN

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

1

2

3

C1

†

C3

DG

N/C

RS

RD

TF

Data Sheet

August 2003

OBS

OLE

TE P

ROD

UCT

REC

OMM

END

ED R

EPL

ACE

MEN

T

HC5

504B