XR

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REV2B

Pin Functions (Continued)

Pin Number

Pin Name

Type

Description

Half-duplex

XR33152

XR33155

XR33158

Full-duplex

XR33156

8

14

VCC

PWR

3.0V to 5.5V power supply input bypass to ground with 0.1μF capacitor.

-

12

A

I

Non inverting receiver input.

-

11

B

I

Inverting receiver input.

-

9

Y

O

Non-inverting driver output.

-

10

Z

O

Inverting driver output.

-

8

DINV

I

Driver invert control (active high). When enabled, the polarity of the driver input pin is

inverted causing the driver output (Y & Z) polarities to be inverted. When disabled, the

pin has a 150kΩ pull-down resistor.

-

13

VL

PWR

Logic interface power supply.

NOTE:

Type: I = Input, O = Output, I/O = Input/Output, PWR = Power.