ST485ACN データシートの表示（PDF） - STMicroelectronics

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ST485ACN

Very high speed low power RS-485/RS-422 transceiver

STMicroelectronics 

Truth tables

2

Truth tables

ST485A

Table 2.

Truth table (driver)

Inputs

RE

DE

DI

X

H

H

X

H

L

L

L

X

Note:

X = Don’t care; Z = High impedance

Table 3.

Truth table (receiver)

Inputs

RE

DE

A-B

L

L

≥ -0.2V

L

L

≤ -0.2V

L

L

INPUTS OPEN

Note:

X = Don’t care; Z = High impedance

Outputs

B

A

L

H

H

L

Z

Z

Outputs

RO

H

L

H

Mode

A

Normal

Normal

Normal

Mode

Normal

Normal

Normal

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