ADM2486BRWZ 查看數據表（PDF） - Analog Devices

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ADM2486BRWZ

High Speed, Half-Duplex iCoupler Isolated RS-485 Transceiver

Analog Devices 

SWITCHING CHARACTERISTICS

VDD1

0V

B

1/2VO

VO

0.5VDD1

tPALH

tPBLH

0.5VDD1

tPBHL

tPAHL

A

VOH

A, B

VOL

90% POINT

tSKEW

tSKEW

tPWD = |tPALH – tPAHL|, |tPBLH – tPBHL|

90% POINT

10% POINT

tR

10% POINT

tF

Figure 12. Driver Propagation Delay, Rise/Fall Timing

A–B

RxD

0V

0V

tPLH

tPHL

VOH

1.5V

tSKEW = |tPLH – tPHL|

1.5V

VOL

Figure 13. Receiver Propagation Delay

ADM2486

RTS

0.5VDD1

tZL

0.5VDD1

tLZ

0.7VDD1

0.3VDD1

A, B

A, B

2.3V

tZH

2.3V

VOH + 0.5V

VOL

tHZ

VOH – 0.5V

VOH

0V

Figure 14. Driver Enable/Disable Timing

RE

RxD

RxD

0V

0.5VDD1

tZL

1.5V

tZH

O/P LOW

O/P HIGH

1.5V

0.5VDD1

tLZ

0.7VDD1

0.3VDD1

VOL + 0.5V

VOL

tHZ

VOH

VOH – 0.5V

Figure 15. Receiver Enable/Disable Timing

Rev. C | Page 11 of 20

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