4-3

Thermal Information

Maximum Supply Voltages

Uncommitted Switch Voltage . . . . . . . . . . . . . . . . . . . . . . . -110V

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

Operating Conditions

Temperature Range

Uncommitted Switch (loop back or relay driver). . . . . . +5V to -100V

Thermal Resistance (Typical, Note 1)

(PLCC - Lead Tips Only)

Die Characteristics

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

CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the

device at these or any other conditions above those indicated in the operational sections of this specification is not implied.

NOTE:

1.

Electrical Specifications

All AC parameters are specified at 600

Ω 2-wire terminating impedance over the frequency band of 300Hz to

3.4kHz. Protection resistors = 0

Ω.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNITS

RINGING PARAMETERS

VRS Input Impedance (Note 2)

450

-

-

k

Ω

Differential Ringing Gain (Note 3)

78

80

82

V/V

Ringing Voltage Total Distortion

-

-

3.0

%

4-Wire to 2-Wire Ringing Off Isolation

Active mode, referenced to VRS input

-

90

-

dB

2-Wire to 4-Wire Transmit Isolation

Ringing mode referenced to the differential ringing

amplitude

-80-

dB

Centering Voltage Accuracy

-

2.5

-

V

-

2.5

-

V

AC TRANSMISSION PARAMETERS

Receive Input Impedance (Note 2)

160

-

-

k

Ω

Transmit Output Impedance (Note 2)

--

1

Ω

4-Wire Port Overload Level

THD = 1%

3.1

3.5

-

2-Wire Port Overload Level

THD = 1%

3.1

3.5

-

2-Wire Return Loss

300Hz

-

24

-

dB

1kHz

-

40

-

dB

3.4kHz

-

21

-

dB

2-Wire Longitudinal Balance (Notes 4, 5)

Forward Active, Grade A and B

58

62

-

dB

Forward Active, Grade C, D and E

53

59

-

dB

4-Wire Longitudinal Balance

Forward Active, Grade A and B

58

67

-

dB

Forward Active, Grade C, D and E

53

64

-

dB

HC55185