5

FIGURE 2A. TEST CIRCUIT

FIGURE 2B. MEASUREMENT POINTS

FIGURE 2. DRIVER PROPAGATION DELAY AND DIFFERENTIAL TRANSITION TIMES

FIGURE 3A. TEST CIRCUIT

FIGURE 3B. MEASUREMENT POINTS

FIGURE 3. DRIVER ENABLE AND DISABLE TIMES

FIGURE 4A. TEST CIRCUIT

FIGURE 4B. MEASUREMENT POINTS

FIGURE 4. DRIVER DATA RATE

D

DE

DI

SIGNAL

GENERATOR

Z

Y

OUT (Y)

3V

0V

1.5V

1.5V

50%

50%

OUT (Z)

50%

50%

DIFF OUT (Y - Z)

90%

90%

10%

10%

DI

SKEW = |CROSSING PT. OF Y

↑ & Z↓ - CROSSING PT. OF Y↓ & Z↑|

D

DE

DI

110

Ω

Z

Y

GND

SW

PARAMETER OUTPUT

RE

DI

SW

Y / Z

X

1 / 0

GND

50

Y / Z

X

0 / 1

50

Y / Z

X

1 / 0

GND

50

Y / Z

X

0 / 1

50

SIGNAL

GENERATOR

OUT (Y, Z)

3V

0V

1.5V

1.5V

0V

2.3V

OUT (Y, Z)

2.3V

DE

OUTPUT HIGH

OUTPUT LOW

D

DE

DI

SIGNAL

GENERATOR

Z

Y

3V

0V

DIFF OUT (Y - Z)

DI

0V

ISL81485