8

Exar Coporation 48720 Kato Road, Fremont CA, 94538 • (50) 668-7000 • Fax (50) 668-707 • www.exar.com

SP505_00_08308

Figure 7. V.28 Receiver Input Impedance

A

C

I

ia

±15V

A

C

V

oc

Figure 8. V.28 Receiver Input Open Circuit Bias

A

V

OC

3.9kΩ

C

A

V

t

450Ω

C

A

C

±0.25V

I

x

A

I

sc

C

Figure 9. V.0 Driver Output Open-Circuit Voltage

Figure 0. V.0 Driver Output Test Terminated Voltage

Figure 2. V.0 Driver Output Power-Off Current

Figure . V.0 Driver Output Short-Circuit Current