2

Lucent Technologies Inc.

Data Sheet

June 1998

L7590C Telephone Ringing Driver

Pin Information

°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 this data sheet. Exposure to absolute maximum ratings for extended

periods may adversely affect device reliability.

Pin

Symbol

Type

Name/Function

14

—

+5 V Power Supply.

3

GNDD

—

Digital Ground.

12

GNDR

—

Ringing Ground.

—

Negative Power Supply. Determines the swing of the ringing generator. Connect

a 1

—

Internal Reference Voltage. Connect a 1

16

CLK

I

7

OUT

O

Ringing Generator Output. Connect to ringing relay contact through a filter.

1

CB1

—

Bootstrap Capacitor. Connect a 0.1

µF capacitor between CB1 and CB2.

2

CB2

—

Bootstrap Capacitor. Connect a 0.1

µF capacitor between CB1 and CB2.

9L1

—

Filter Inductor. Connect an inductor to pin L2.

10

L2

—

Filter Inductor. Connect an inductor to pin L1.

15

EN

—

Not Enable. A logic low activates the internal circuitry. A logic high puts the device

in a low-power powerdown mode.

Parameter

Min

Typ

Max

Unit

—

7.0

—

V

—

–200

—

V

Timing Input Voltage

–0.5

—

7.0

V

Storage Temperature Range

–40

—

125

°C

Maximum Junction Temperature

—

150

—

°C

Relative Humidity Range

5

—

95

%