Intersil Corporation HC5549 Datasheet

Semiconductor

HC5549

Data Sheet January 1999 File Number

Low Power SLIC with Battery Switch

The HC5549 Subscriber line interface circuit is a 100V diellectrically isolated bipolar integrated circuit for use in

short loop ISDN, P ABX and Pairgain applications. The HC5549 has been optimized for low power as required for battery backed remote terminals or for applications requiring emergency powering from the line such as European ISDN NT1+ designs.

A high and low voltage battery supply may be connected to the HC5549 so that power dissipation can be lowered in the off hook condition in these short loop applications. The high battery supply can beused in the on-hook condition to allow interfacing to fax and answering machines that require 48V to detect end of call status. The HC5549 also has a low power standby state with very low power consumption (35mW) resulting in exceptionally low battery drain while providing continued loop supervision.

The HC5549 provides loop current, ground key and ring trip detect functions as well as an alarm output to indicate thermal overload.

2-wire to 4-wire and 4-wire to 2-wire conversion is provided and impedance matching is achievedusing a single external network. The HC5549 is compatible with dual and single supply switched capacitor or DSP codec/ﬁlters

Features

• Dual Battery Operation

• Single Additional +5V Supply

• Low Standby Power Consumption (48V, 35mW)

• On Hook Transmission

• Tip and Ring Disconnect

• Soft or Hard Polarity Reversal

• Supports 12 kHz or 16 kHz Pulse Metering

• Ring Relay Driver

• On Chip 2-wire AC/DC Loopback

• No Latch-Up or Power Supply Sequencing

to 70o or -40o to 85o Ambient Temp Range

•0

• Low External Component Count

Applications

• ISDN NT1+ Terminals

• Pairgain Remote Termination

• PABX and Key Systems

Related Literature

• AC SPICE Macromodel

4539.1

Block Diagram

4-80

POL CDC VBHVBL

ILIM

TIP

RING

SW+

SW-

CONTROL

2-WIRE

PORT

TEST

ACCESS

BATTERY

SWITCH

TRANSMIT

SENSING

DETECTOR

LOGIC

RTD RD

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

DET ALM

RINGING

PORT

4-WIRE

PORT

CONTROL

LOGIC

BSEL

1-800-4-HARRIS or 407-727-9207

VRS

VRX VTX

-IN VFB

F2 F1 F0

SWC

RSLIC18™ is a trademark of Harris Corporation.

HC5549

Ordering Information (PLCC Package Only)

BATSWPOL

PART NUMBER 48V

HC5549CM •• HC5549IM

•

REV

•

RING

DELAY

DRIVER

•

2W LOOP BACK LB = 53dB

••

TEMP.

RANGEoC PACKAGE

PACKAGE

NO.

0 to 70 28 Ld PLCC N28.45

-40 to 85 28 Ld PLCC N28.45

Device Operating Modes

OPERATING MODE F2 F1 F0 E0 = 1 E0 = 0 DESCRIPTION

Low Power Standby 0 0 0 SHD GKD MTU compliant standby mode with active loop

detector. Forward Active 0 0 1 SHD GKD Forward battery loop feed. Unused 0 1 0 n/a n/a Reserved internal test mode. Reverse Active 0 1 1 SHD GKD Reverse battery loop feed. Ringing 1 0 0 RTD RTD Enabler internal ring trip detector. Unused 1 0 1 n/a n/a Reserved internal test mode. Unused 1 1 0 n/a n/a Reserved internal test mode. Power Denial 1 1 1 n/a n/a Device shutdown.

Pinouts

HC5549 (PLCC)

TOP VIEW

SW+

SW-

SWC

F2 F1 F0 E0

RING

ILIM

RTD

CDC

-IN VFB

VTX

VRX

VRB

POL

TIP

VBL

VBH

ALM

BGND

AGND

5 6 7

9 10 11

DET

4-81

HC5549

Absolute Maximum Ratings T

Maximum Supply Voltages

VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to +7V

VCC - V

Uncommitted Switch Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . -80V

ESD (Human Body Model). . . . . . . . . . . . . . . . . . . . . . . . . . . . 500V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80V

BAT

Operating Conditions

Temperature Range

Industrial (I sufﬁx). . . . . . . . . . . . . . . . . . . . . . . . . . -40oC to 85oC

Commercial (C sufﬁx). . . . . . . . . . . . . . . . . . . . . . . . 0oC to 75oC

Positive Power Supply (VCC). . . . . . . . . . . . . . . . . . . . . . . +5V ±5%

Negative Power Supply (VBH, VBL) (180, 181, 182) . . -16V to -80V

Uncommitted Switch (loop back or relay driver). . . . . . . +5V to -80V

CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operationofthe device at these or any other conditions above those indicated in the operational sections of this speciﬁcation is not implied.

NOTE:

1. θJA is measured with the component mounted on an evaluation PC board in free air.

Electrical Specifications Unless Otherwise Specified, T

PARAMETER TEST CONDITIONS MIN TYP MAX UNITS

RINGING PARAMETERS

VRB Input Impedance 480 - - kΩ AC TRANSMISSION PARAMETERS (Forward Active and Reverse Active, BSEL = 0, unless otherwise specified.) Receive Input Impedance 160 - - kΩ Transmit Output Impedance --1Ω 4-Wire Port Overload Level THD = 1% 3.1 3.5 - V 2-Wire Port Overload Level THD = 1% 3.1 3.5 - V 2-Wire Return Loss 300Hz ≤ f < 1kHz 30 45 - dB

Longitudinal Current Capability (Per Wire) Test for False Detect - 20 - mA

2-Wire Longitudinal Balance Tested per IEEE455-1985, with 368Ω per wire. 53 - - dB 4-Wire Longitudinal Balance Tested per IEEE455-1985, with 368Ω per wire. 59 - - dB 4-Wire to 4-Wire Insertion Loss -6.22 -6.02 -5.82 dB 2-Wire to 4-Wire Level Linearity

4-Wire to 2-Wire Level Linearity Referenced to -10dBm

Idle Channel Noise 2-Wire C-Message - 16 19 dBrnC

DC PARAMETERS

Loop Current Limit Programming Range Max Low Battery = -52V, BSEL = 0 15 - 45 mA Loop Current Accuracy I Loop Current During Low Power Standby Forward polarity only. 17 - 26 mA Open Circuit Voltage

(|Tip - Ring|)

Low Power Standby Open Circuit Voltage (Tip - Ring) BSEL = 1 43 45 47 V Ring Trip Programming Current Accuracy - - 10 %

=25oC Thermal Information

Thermal Resistance (Typical, Note 1) θJA(oC/W)

PLCC Package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Maximum Junction Temperature Plastic . . . . . . . . . . . . . . . . 150oC

Maximum Storage Temperature Range. . . . . . . . . . -65oC to 150oC

Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . 300oC

(PLCC - Lead Tips Only)

Die Characteristics

Substrate Potential. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V

Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Bipolar-DI

= -40oC to 85oC, VBL = -24V, VBH= -48V, VCC = +5V, AGND = BGND = 0V , loop current limit = 25mA. All AC Parameters are specified at 600Ω 2-wire terminating impedance over the frequency band of 300Hz to 3.4kHz. Protection resistors = 0Ω.

PK PK

1kHz ≤ f ≤ 3.4kHz 35 45 - dB

RMS

Test forFalseDetect,Low PowerStandby, BSEL=0 - 10 - mA

+3 to -40dBm, 1kHz - 0.025 - dB

-40 to -50dBm, 1kHz - 0.050 - dB

-50 to -55dBm, 1kHz - 0.100 - dB

Psophometric - -74 -71 dBmp

= 25mA, BSEL = 0 - - 10 %

BSEL = 0 14 15.5 17 V BSEL = 1 37.5 40 42.5 V

RMS

BAT

4-82

HC5549

Electrical Specifications Unless Otherwise Specified, T

= -40oC to 85oC, VBL = -24V, VBH= -48V, VCC = +5V, AGND = BGND = 0V , loop

current limit = 25mA. All AC Parameters are specified at 600Ω 2-wire terminating impedance over the frequency band of 300Hz to 3.4kHz. Protection resistors = 0Ω. (Continued)

PARAMETER TEST CONDITIONS MIN TYP MAX UNITS

Ground Key Threshold 10 12 13.5 mA

Thermal Alarm Output IC junction temperature - 175 -

RELAY DRIVER

On Voltage I

= 45 mA - - 0.60 V

LOGIC INPUTS (F0, F1, F2, E0, SWC)

Input Low Voltage - - 0.8 V Input High Voltage 2.0 - - V Input Low Current V Input High Current V

LOGIC OUTPUTS (

DET, ALM)

Output Low Voltage I Output High Voltage I

= 0.4V -20 - - µA

= 2.4V - - 5 µA

= 5mA - - 0.4 V

= 100 µA 2.4 - - V

SUPPLY CURRENTS (Supply currents not listed are considered negligible and do not contribute significantly to total power dissipation. All measurements made under open circuit load conditions.)

Low Power Standby I

Forward or Reverse (Note 5) I

Forward I

Power Denial I

, BSEL = 1 - 0.375 0.600 mA

BH CC

, BSEL = 0 - 1.0 2.0 mA

BL CC

, BSEL = 1 - 0.7 1.5 mA

, BSEL = 1 - 1.0 2.0 mA

BH CC

, BSEL = 1 or 0 - 0.2 0.5 mA

2.0 3.7 5.0 mA

2.5 4.0 5.0 mA

3.5 4.5 6.5 mA

0.5 3.0 5.0 mA

ON HOOK POWER DISSIPATION

Forward or Reverse BSEL = 0 - 44 60 mW Forward or Reverse BSEL = 1 - 90 150 mW Low Power Standby BSEL = 1 - 37 60 mW

OFF HOOK POWER DISSIPATION

Forward or Reverse BSEL = 0 - 290 310 mW

POWER SUPPLY REJECTION RATIO

to 2-Wire f = 300Hz - 40 - dB

f = 1kHz - 35 - dB f = 3.4kHz - 28 - dB

to 4-Wire f = 300Hz - 45 - dB

f = 1kHz - 43 - dB f = 3.4kHz - 33 - dB

to 2-Wire 300Hz ≤ f ≤ 3.4kHz - 30 - dB

to 4-Wire 300Hz ≤ f ≤ 3.4kHz - 35 - dB

to 2-Wire 300Hz ≤ f ≤ 3.4kHz - 33 - dB

to 4-Wire 300Hz ≤ f ≤ 1kHz - 40 - dB

1kHz < f ≤ 3.4kHz - 45 - dB

4-83

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