Agere Systems Inc.

7

Data Sheet

November 2001

with Reverse Battery and Dual Current Limit

L9219A/G Low-Cost Line Interface

°C)

Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are abso-

lute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess

of those given in the operational sections of the data sheet. Exposure to absolute maximum ratings for extended

periods can adversely affect device reliability.

Note: The IC can be damaged unless all ground connections are applied before, and removed after, all other connections. Furthermore, when

powering the device, the user must guarantee that no external potential creates a voltage on any pin of the device that exceeds the

device ratings. Some of the known examples of conditions that cause such potentials during powerup are the following:

Recommended Operating Conditions

Parameter

Symbol

Min

Typ

Max

Unit

5 V Power Supply

—

—

7.0

V

Battery (Talking) Supply

—

—

–75

V

Logic Input Voltage

—

–0.5

—

7.0

V

Analog Input Voltage

—

–7.0

—

7.0

V

Maximum Junction Temperature

150

—

—

°C

Storage Temperature Range

–40

—

125

°C

Relative Humidity Range

5

—

95

%

Ground Potential Difference (BGND to AGND)

—

—

±3

—

V

PT or PR Fault Voltage (dc)

—

3

V

PT or PR Fault Voltage (10 x 1000

µs)

—

15

V

Current into Ring Trip Inputs

—

±240

—

µA

Parameter

Min

Typ

Max

Unit

Ambient Temperature

–40

—

85

°C

4.75

5.0

5.25

V

–24

–48

–70

V