ST1480AB Просмотр технического описания (PDF) - STMicroelectronics

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производитель

ST1480AB

3.3 V powered, 15 kV ESD protected, up to 12 Mbps true RS-485/RS-422 transceiver

STMicroelectronics 

Truth tables

2

Truth tables

Inputs

Table 2. Truth table (driver)

Outputs

RE

DE

DI

B

A

X

H

H

L

H

X

H

L

H

L

L

L

X

Z

Z

H

L

X

Z

Z

Note:

RE

L

L

L

L

H

Note:

X= Don’t care; Z=High impedance

Inputs

Table 3. Truth table (receiver)

Output

DE

A-B

RO

L

≥ -0.015 V

H

L

≤ -0.2 V

L

L

Inputs open

H

L

Inputs shorted

H

L

X

Z

X= Don’t care; Z=High impedance

ST1480AB - ST1480AC

Mode

Normal

Normal

Normal

Shutdown

Mode

Normal

Normal

Normal

Normal

Shutdown

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