FN4344 Rev 5.00

Page 1 of 17

June 2004

FN4344

Rev 5.00

June 2004

HC5503

Low Cost 24V SLIC For PABX/Key Systems

DATASHEET

The Intersil HC5503 low cost SLIC is optimized for use in

small Analog or mixed Analog and Digital Key Telephone

Systems (KTS) or PBX products. The low component count

solution and surface mount package options, enable a small

desktop Key System/PBX product to be achieved. The

internal power dissipation of the end product is minimized by

the low power consumption and minimal power supply

voltage requirements of the HC5503.

The HC5503 integrated solution provides higher quality,

higher reliability and better performance solution than a

transformer, thick film hybrid or discrete analog subscriber

interface design.

The HC5503 is designed in a Dielectrically isolated bipolar

technology and is inherently latch proof and does not require

hot plug or power supply sequencing precautions.

Features

• Wide Operating Battery Range (-21V to -44V)

• Single Additional +5V Supply

• 25mA Short Loop Current Limit

• Ring Relay Driver

• Switch Hook and Ring Trip Detect

• Low On-Hook Power Consumption

• On-Hook Transmission

• ITU-T Longitudinal Balance Performance

• Loop Power Denial Function

• Thermal Protection

• Supports Tip, Ring or Balanced Ringing Schemes

• Low Profile Surface Mount Packaging

• Pin Compatible with Industry Standard HC5504B SLIC

• Pb-free Available

Applications

• Analog Subscriber Line Interfaces in Analog Key Systems

and Digital ISDN PABX Systems

• Related Literature

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

SLICs

Ordering Information

PART NUMBER

TEMP.

RANGE (°C)

PACKAGE

PKG.

DWG. #

HC5503CB

0 to 75

24 Ld SOIC

M24.3

HC5503CBZ (Note)

0 to 75

24 Ld SOIC (Pb-free) M24.3

HC5503CBZ96

(Note)

0 to 75

24 Ld SOIC (Pb-free) M24.3

NOTE: Intersil Pb-free products employ special Pb-free material

sets; molding compounds/die attach materials and 100% matte tin

plate termination finish, which is compatible with both SnPb and

Pb-free soldering operations. Intersil Pb-free products are MSL

classified at Pb-free peak reflow temperatures that meet or exceed

the Pb-free requirements of IPC/JEDEC J Std-020B.

NOT RECOMMENDED FO

R NEW DESIGNS

RECOMMENDED REPLA

CEMENT PART

HC5503PRC