Rainbow-electronics MAX14770E Uživatelský manuál stáhnout pdf (Strana 6)

High-ESD Profibus RS-485 Transceiver

MAX14770E

6 ______________________________________________________________________________________

Figure 1. Driver DC Test Load

Figure 3. Driver Timing Test Circuit

Figure 4. Driver Propagation Delays

Figure 2. V

ODPP

Swing Under Profibus Equivalent Load Test

195I

110I

195I

1.5V

20%

80%

20%

80%

-V

DIFF

DSKEW =

DPLH

- t

DPHL

DIFF

= V

- V

f = 1MHz, t

P 3ns, t

P 3ns

1/2 V

DPLH

DPHL

1/2 V

1 2 3 4 5 6 7 8 9 10 11 ... 14 15

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Rainbow-electronics MAX14770E Uživatelský manuál Strana 6