5

LTC490

490fb

LTC490 • F03

D

3V

0V

1.5V

1.5V

80%

20%

50%

10%

Z

Y

90%

50%

PI FU CTIO S

R (Pin 2): Receiver Output. If A > B by 200mV, R will be

high. If A < B by 200mV, then R will be low.

D (Pin 3): Driver Input. A low on D forces the driver outputs

Y low and Z high. A high on D will force Y high and Z low.

GND (Pin 4): Ground Connection.

Y (Pin 5): Driver Output.

Z (Pin 6): Driver Output.

B (Pin 7): Receiver Input.

A (Pin 8): Receiver Input.

Figure 4. Receiver Propagation Delays

Figure 3. Driver Propagation Delays

Figure 1. Driver DC Test Load

Figure 2. Driver/Receiver Timing Test Circuit

TEST CIRCUITS

LTC490 • F01

Y

Z

R

R

LTC490 • F02

DRIVER

D

Y

Z

RECEIVER

A

B

15pF

R

SWITCHI G TI E WAVEFOR S

LTC490 • F04

A-B

0V

0V

OUTPUT

1.5V

1.5V

INPUT

R