Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com

SP3070E-SP3078E_100_061109

12

FuNCTION TaBlES

SP3070E, SP3073E, SP3076E (Full Duplex)

TRANSMITTING

Inputs

Outputs

RE

DE

DI

Z

Y

X

1

1

0

1

X

1

0

1

0

0

0

X

High-Z

1

0

X

Shutdown

SP3070E, SP3073E, SP3076E (Full Duplex)

RECEIVING

Inputs

Output

RE

DE

A, B

RO

0

X

≥ -50mV

1

0

X

≤-200mV

0

X

X

Open,

Shorted

1

1

1

X

High-Z

1

0

X

Shutdown

SP3072E, SP3075E, SP3078E (Half Duplex)

TRANSMITTING

Inputs

Outputs

RE

DE

DI

B/Z

A/Y

X

1

1

0

1

X

1

0

1

0

0

0

X

High-Z

1

0

X

Shutdown

SP3072E, SP3075E, SP3078E (Half Duplex)

RECEIVING

Inputs

Output

RE

DE

A, B

RO

0

X

≥ -50mV

1

0

X

≤-200mV

0

X

X

Open/shorted

1

1

1

X

High-Z

1

0

X

Shutdown

SP3071E, SP3074E, SP3077E (Full Duplex)

TRANSMITTING

Inputs

Outputs

DI

Z

Y

1

0

1

0

1

0

SP3071E, SP3074E, SP3077E (Full Duplex)

RECEIVING

Inputs

Output

A, B

RO

≥ -50mV

1

≤-200mV

0

Open/shorted

1