8

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com

SP3490_349_02_0270

Figure 9. Driver Propagation Delay Waveforms

0V

3V

1.5V

1.5V

INPUT

Y OUTPUT

Z OUTPUT

2

≈ 1.5V

SWITCHING WAVEFORMS

Figure 3. Receiver Enable and Disable Waveforms

IN

1.5V

1.5V

3V

0V

OUT

50%

50%

10%

10%

90%

90%

2.0V

-2.0V

Figure 0. Driver Differential Output Delay and

Transition Time Waveforms

0V

0.25V

3V

1.5V

1.5V

DE

OUTPUT

HIGH

0.25V

0V

OUTPUT

LOW

2

≈ 1.5V

3V

0V

1.5V

0V

1.5V

INPUT

OUTPUT

2

Figure 2. Receiver Propagation Delay Waveforms

Figure . Driver Enable and Disable Timing

Waveforms

3V

0V

1.5V

1.5V

1.5V

10%

0V

REB

OUTPUT

S1 is open

S2 is closed

S3 = 1.5V

3V

0V

1.5V

1.5V

1.5V

10%

REB

OUTPUT

S1 is closed

S2 is open

S3 = -1.5V

NOTE : The input pulse is supplied by a generator with the following characteristics:

PRR = 250kHz, 50% duty cycle, t

NOTE 2: C