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MAX14821

IO-Link Device Transceiver

Table 6. DoAv and DoInv Operation

Note 2: Low is when C/Q or DO < 8V; high is when C/Q or DO >13V.

Table 7. DO Output Programmed by DoBit

X = Don’t care.

Figure 9. Equivalent DO Logic

DoAv

DoInv

TXC AND TXQ

(NOTE 1)

LO

(NOTE 1)

DO

(NOTE 2)

C/Q

(NOTE 2)

0

0

Low

Low

High

High

0

0

Low

High

Low

High

0

0

High

Low

High

Low

0

0

High

High

Low

Low

0

1

Low

Low

Low

High

0

1

Low

High

High

High

0

1

High

Low

Low

Low

0

1

High

High

High

Low

1

0

Low

Low

Low

High

1

0

Low

High

Low

High

1

0

High

Low

High

Low

1

0

High

High

High

Low

1

1

Low

Low

High

High

1

1

Low

High

High

High

1

1

High

Low

Low

Low

1

1

High

High

Low

Low

LO

DoBit

DoPP

DoN/P

DO CONFIGURATION

DO STATE

High

0

1

X

Push-pull

Low

High

1

1

X

Push-pull

High

High

0

0

0

PNP

Off, DO is high impedance

High

1

0

0

PNP

On, DO is high

High

0

0

1

NPN

On, DO is low

High

1

0

1

NPN

Off, DO is high impedance

Low

X

X

X

See Table 6

See Table 6

LO

DoBit

DO

DoInv