3

Pin Descriptions

PIN

FUNCTION

RO

Receiver output: If A > B by at least 0.2V, RO is high; If A < B by 0.2V or more, RO is low; RO = High if A and B are unconnected (floating).

RE

Receiver output enable. RO is enabled when RE is low; RO is high impedance when RE is high.

DE

Driver output enable. The driver outputs, Y and Z, are enabled by bringing DE high. They are high impedance when DE is low.

DI

Driver input. A low on DI forces output Y low and output Z high. Similarly, a high on DI forces output Y high and output Z low.

GND

Ground connection.

A/Y

Noninverting receiver input and noninverting driver output. Pin is an input if DE = 0; pin is an output if DE = 1.

B/Z

Inverting receiver input and inverting driver output. Pin is an input if DE = 0; pin is an output if DE = 1.

A

Noninverting receiver input.

B

Inverting receiver input.

Y

Noninverting driver output.

Z

Inverting driver output.

System power supply input (3V to 3.6V).

NC

No Connection.

ISL83483, ISL83485, ISL83488, ISL83490, ISL83491