XR

8/19

REV2B

Pin Configurations

Pin Functions

Pin Number

Pin Name

Type

Description

Half-duplex

XR33152

XR33155

XR33158

Full-duplex

XR33156

-

1

RINV

I

Receiver invert control (active high). When enabled, the polarity of the receiver bus

pins (A & B) is reversed: A = inverting and B = non-inverting. When disabled, the

receiver bus pins (A & B) operate normally: A = non-inverting and B = inverting.

1

2

RO

O

Receiver output, when RE is low and if (A-B) ≥ 200mV, RO is high. If (A-B) ≤ -200mV,

RO is low If inputs are left floating, shorted together or terminated and undriven for

more than 2μs the output is high.

2

-

INV

I

Driver and receiver invert control (active high). When enabled, the polarity of the driver

input and receiver input bus pins is inverted. When disabled, the driver input and

receiver inputs operate normally: A = non-inverting and B = inverting. The INV pin has

a 150kΩ pull-down resistor.

-

3

RE

I

Receiver output enable (hot swap). When RE is low, RO is enabled. When RE is high,

RO is high impedance. RE should be high and DE should be low to enter

shutdown mode.

3

4

DE

I

Driver output enable (hot swap). When DE is high, outputs are enabled. When DE is

low, outputs are high impedance. DE should be low and RE should be high to enter

shutdown mode.

4

5

DI

I

Driver input. With DE high, a low level on DI forces non-inverting output low and

inverting output high. Similarly, a high level on DI forces non-inverting output high and

inverting output low.

5

6, 7

GND

PWR

Ground.

6

-

A/Y

I/O

Non-inverting receiver input and non-Inverting driver output.

7

-

B/Z

I/O

Inverting receiver input and Inverting driver output.

NOTE:

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

RINV 1

RO 2

RE 3

DE 4

DI 5

GND 6

GND 7

VCC

14

VL

13

A

12

B

11

Z

10

Y

9

DINV

8

RO 1

INV 2

DE 3

DI 4

VCC

8

B/Z

7

A/Y

6

GND

5

XR33152, XR33155 and XR33158 Half-duplex

XR33156 Full-duplex