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LUCL8575BR

Dual-Resistive, Low-Cost Subscriber Line Interface Circuit (SLIC)

Agere -> LSI Corporation 

Advance Data Sheet

March 1997

L8575

Dual-Resistive, Low-Cost SLIC

Electrical Characteristics

Generally, minimum and maximum values are testing requirements. However, some parameters may not be tested

in production because they are guaranteed by design and device characterization. Typical values reflect the design

center or nominal value of the parameter; they are for information only and are not a requirement. Minimum and

maximum values apply across the entire temperature range (–40 °C to +85 °C) and entire battery range (–42 V to

–58 V). Unless otherwise specified, typical values are defined as 25 °C, VDDA = 5 V, VDDD = 5 V, VBAT = –48 V. Posi-

tive currents flow into the device.

Table 2. Operating Conditions and Powering

Parameter

Temperature Range

Humidity Range

Supply Voltage:

VDDA

VDDD

VBAT

VDDA – VDDD

Supply Currents (both channels active):

IVDDA + IVDDD (5 V)

IVBAT (–48 V)2

Supply Currents (both channels powerdown):

IVDDA + IVDDD (5 V)

IVBAT (–48 V)2

Total Power Dissipation (5 V; –48 V)3:

Active (both channels)

Powerdown (both channels)

Power-supply Rejection4, 5 (50 mVrms ripple):

Tip/Ring and XMT

Thermal5:

Thermal Resistance (still air)

Operating Tjc

Min

Typ

Max

Unit

–40

—

85

°C

5

—

951

%RH

4.75

—

5.5

V

4.75

—

5.5

V

–42

–48

–58

V

—

—

±0.5

V

—

—

19.0

mA

—

—

–27.5

mA

—

—

18.0

mA

—

—

–2.0

mA

—

—

1.40

W

—

—

185

mW

Refer to Figure 3.

—

—

47

°C/W

—

—

155

°C

1. Not to exceed 26 grams of water per kilogram of dry air.

2. Includes VBAT current through the external dc feed resistors, assuming the loop is open.

3. Includes power dissipation in the external dc feed resistors per application diagram, assuming the loop is open.

4. VBAT power supply rejection depends on the battery noise cancellation circuit. The performance stated here applies only during the active

state and assumes proper battery noise cancellation, i.e., a high-pass filter from VBAT to CBN and a resistor from RGBN to AGND which is 50

times the dc feed resistor connecting VBAT to Ring (refer to the application diagram).

5. This parameter is not tested in production. It is guaranteed by design and device characterization.

Lucent Technologies Inc.

9

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