ISL3298EMRTEP

3

FN7607.1

July 28, 2011

Typical Operating Circuit

0.1µF

+

R

5

8

4

1

7

2

GND

RO

RE

B

A

+3.3V TO 5V

0.1µF

+

D

7

6

8

2

3

4, 5

GND

DE

DI

Z

Y

+3.3V

ISL3282EMRTEP

ISL3298EMRTEP

1

1.8V

6

2.5V

LOGIC

DEVICE

(µP, ASIC,

UART)

LOGIC

DEVICE

(µP, ASIC,

UART)

Test Circuits and Waveforms

FIGURE 1. DC DRIVER TEST CIRCUITS

FIGURE 2A. TEST CIRCUIT

FIGURE 2B. MEASUREMENT POINTS

FIGURE 2. DRIVER PROPAGATION DELAY AND DIFFERENTIAL TRANSITION TIMES

D

DE

DI

Z

Y

D

DE

DI

375Ω

375Ω

Z

Y

-7V TO +12V

D

DE

DI

SIGNAL

GENERATOR

CD

Z

Y

OUT (Z)

0V

50%

50%

OUT (Y)

DIFF OUT (Y - Z)

90%

90%

10%

10%

DI

50%

50%

50%

50%