ADM3485E(2000) Просмотр технического описания (PDF) - Analog Devices

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производитель

ADM3485E
(Rev.:2000)

ESD Protected, EMC Compliant, 3.3 V, 20 Mbps, EIA RS-485 Transceiver

Analog Devices 

ADM3485E

Switching Characteristics

3V

1.5V

0V

tPLH

B

1/2 VO

VO

A

VO

90% POINT

0V

10% POINT

–VO

tR

tSKEW

1.5V

tPLH

tSKEW

90% POINT

10% POINT

tF

Figure 9. Driver Propagation Delay, Rise/Fall Timing

A–B

0V

tPLH

0V

tPLH

1.5V

RO

1.5V

VOH

VOL

Figure 10. Receiver Propagation Delay

DE

1.5V

tZL

3V

1.5V

0V

tLZ

D

1.5V

O/P

LOW

tZH

D

O/P

1.5V

HIGH

0V

VOL + 0.25V

VOL

tHZ

VOH

VOH – 0.25V

Figure 11. Driver Enable/Disable Timing

RE

1.5V

tZL

3V

1.5V

0V

tLZ

R

1.5V

O/P

LOW

tZH

R

O/P

1.5V

HIGH

VOL + 0.25V

VOL

tHZ

VOH

VOH – 0.25V

0V

Figure 12. Receiver Enable/Disable Timing

–6–

REV. A

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