LTC488/LTC489

5

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PIN FUNCTIONS

B 1 (Pin 1): Receiver 1 Input.

A1 (Pin 2): Receiver 1 Input.

RO1 (Pin 3): Receiver 1 Output. If the receiver output

is enabled, then if A > B by 200mV, RO1 will be high. If

A < B by 200mV, then RO1 will be low.

EN (Pin 4) LTC488: Receiver Output Enabled. See Function

Table for details.

EN12 (Pin 4) LTC489: Receiver 1, Receiver 2 Output

Enabled. See Function Table for details.

RO2 (Pin 5): Receiver 2 Output. Refer to RO1.

A2 (Pin 6): Receiver 2 Input.

B2 (Pin 7): Receiver 2 Input.

GND (Pin 8): Ground Connection.

B3 (Pin 9): Receiver 3 Input.

A3 (Pin 10): Receiver 3 Input.

RO3 (Pin 11): Receiver 3 Output. Refer to RO1.

EN (Pin 12) LTC488: Receiver Output Disabled. See Func-

tion Table for details.

EN34 (Pin 12) LTC489: Receiver 3, Receiver 4 output

enabled. See Function Table for details.

RO4 (Pin 13): Receiver 4 Output. Refer to RO1.

A4 (Pin 14): Receiver 4 Input.

B4 (Pin 15): Receiver 4 Input.

FUNCTION TABLES

LTC488

DIFFERENTIAL

ENABLES

OUTPUT

A – B

EN

EN

RO

H

X

X

L

H

H

H

X

X

L

?

?

H

X

X

L

L

L

XL

H

Z

LTC489

DIFFERENTIAL

ENABLES

OUTPUT

A – B

EN12 or EN34

RO

H

H

H

?

H

L

XL

Z

H: High Level

L: Low Level

X: Irrelevant

?: Indeterminate

Z: High Impedance (Off)