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6

CPC7581

Rev. 2

Table 8. Truth Table

Input

TSD

Tip Break

Ring

Ringing

Ring

State

Switch

Break

Return

Switch

Switch

Switch

0V

On

On

Off

Off

Idle/Talk

5V

Off

Off

On

On

Ringing

Don’t

Off

Off

Off

Off

All Off

Care

Table 7. Electrical Specifications, Protection Circuitry

PARAMETER

CONDITIONS

SYMBOL

MIN

TYP

MAX

UNITS

Parameters Related to Diodes

(in Diode Bridge)

Voltage Drop @ Continuous

Apply +/-dc current limit of break

Forward

-

2.1

3

V

Current (50/60 Hz)

switches

Voltage

Voltage Drop @ Surge

Apply +/-dynamic current limit of

Forward

-

5

-

V

Current

break switches

Voltage

Parameters Related to

Surge Current

-

-

-

-

*

A

Trigger Current (+25˚C)

-

I

TRIG

-60

-

mA

Hold Current (+25˚C)

-

I

HOLD

-

100

-

mA

Trigger Current (+85˚C)

-

I

TRIG

-35

-

mA

Hold Current (+85˚C)

I

HOLD

60

70

-

mA

Gate Trigger Voltage

Trigger Current

-

V

-

V

V

Reverse Leakage Current

V

BAT

-

-

-

1.0

µA

0.5A t = 0.5 ms

V

on

--3

-

V

2.0A t = 0.5 ms

-

-

-5

-

V

* Passes GR1089 & ITU-T K.20 with appropriate secondary protection in place.