7

LTC1690

SWITCHI G TI E WAVEFOR S

D

3V

0V

Z

Y

1.5V

90%

10%

50%

1.5V

90%

10%

50%

1690 F04

Figure 4. Driver Propagation Delays

INPUT

OUTPUT

A – B

R

5V

0V

1.5V

0V

1.5V

1690 F05

Figure 5. Receiver Propagation Delays

Driver

DZ

Y

101

010

Receiver

A – B

R

≥ –0.01V

1

≤ –0.20V

0

Inputs Open

1

Inputs Shorted

1

Note: Table valid with or without termination resistors.

1690 F01

Y

Z

R

R

1690 F02

Y

Z

60

Ω

375

Ω

–7V TO 12V

375

Ω

1690 F03

D

Y

Z

A

B

15pF

R

+

+

+

Figure 1. Driver

DC Test Load #1

Figure 2. Driver

DC Test Load #2

Figure 3. Driver/Receiver

Timing Test Load

TEST CIRCUITS

R (Pin 2): Receiver Output. R is high if (A – B)

≥ –10mV

and low if (A – B)

≤ –200mV.

D (Pin 3): Driver Input. If D is high, Y is taken high and Z

is taken low. If D is low, Y is taken low and Z is taken high.

GND (Pin 4): Ground.

Y (Pin 5): Driver Output.

Z (Pin 6): Driver Output.

B (Pin 7): Receiver Input.

A (Pin 8): Receiver Input.