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

http://www.intersil.com or 407-727-9207 | Copyright © Intersil Corporation 1999

HC-5504B

EIA/ITU PABX SLIC with 40mA 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

• Pin for Pin Replacement for the HC-5504

• Monolithic Integrated Device

• DI High Voltage Process

• Compatible With Worldwide PBX Performance

Requirements

• Controlled Supply of Battery Feed Current for Short Loops

(41mA)

• Internal Ring Relay Driver

• Allows Interfacing With Negative Superimposed Ringing

Systems

• 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

Ordering Information

PART

NUMBER

TEMP. RANGE

PACKAGE

PKG. NO.

HC1-5504B-5

0 to 75

24 Ld CERDIP

F24.6

HC1-5504B-9

-40 to 85

24 Ld CERDIP

F24.6

HC3-5504B-5

0 to 75

24 Ld PDIP

E24.6

HC3-5504B-9

-40 to 85

24 Ld PDIP

E24.6

HC4P5504B-5

0 to 75

28 Ld PLCC

N28.45

HC4P5504B-9

-40 to 85

28 Ld PLCC

N28.45

HC9P5504B-5

0 to 75

24 Ld SOIC

M24.3

HC9P5504B-9

-40 to 85

24 Ld SOIC

M24.3

Pinouts

HC-5504B (PDIP, CERDIP, SOIC)

TOP VIEW

HC-5504B (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

DG

RS

TF

RF

BG

TX

+IN

AG

OUT

-IN

RC

PD

GKD

SHD

RD

RFS

DG

N/C

RS

RD

TF

RX

+IN

N/C

OUT

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

Data Sheet

July 1998

File Number

2886.5