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MAX14821

IO-Link Device Transceiver

Table 5. C/Q Driver Output State

Table 4. C/QDEn and TXEN C/Q Driver

Control

X = Don’t care.

X = Don’t care.

Figure 8. Equivalent C/Q Logic

C/QDEn

TXEN

C/Q DRIVER

0

Low

Disabled

X

High

Enabled

1

X

Enabled

TXC AND TXQ

(SEE NOTE)

Q

C/Q�PP

C/Q�N/P

C/Q CONFIGURATION

C/Q STATE

High

1

0

0

PNP, open drain

On, C/Q is high

High

0

0

0

PNP, open drain

Off, C/Q is high impedance

High

1

0

1

NPN, open drain

Off, C/Q is high impedance

High

0

0

1

NPN, open drain

On, C/Q is low

High

1

1

X

Push-pull

High

High

0

1

X

Push-pull

Low

TXQ

C/Q

TXC

Q