RS-485 Transceivers

6

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Figure 1. Driver DC Test Load

Figure 3. Driver/Receiver Timing Test Circuit

Figure 4. Driver Timing Test Load

Figure 2. Receiver Timing Test Load

R

R

Y

Z

DI

DE

3V

Y

Z

A

B

RO

RE

OUTPUT

UNDER TEST

500

Ω

S1

S2

RECEIVER

OUTPUT

TEST POINT

1k

1k

S1

S2

15pF

_________________________________________________________________Test Circuits