XR

8/18

REV2A

Pin Functions

Pin Number

Pin Name

Type

Description

Half-duplex

XR33052

XR33055

XR33058

Full-duplex

XR33053

1

2

RO

Output

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

3

RE

Input

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

Input

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

Input

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

Power

Ground.

8

14

VCC

Power

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

12

A

Input

Non-inverting receiver input.

11

B

Input

Inverting receiver input.

9

Y

Output

Non-inverting driver output.

10

Z

Output

Inverting driver output.

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.

1, 8, 13

N/C

-

Not connected.

Pin Configuration

N/C 1

RO 2

RE 3

DE 4

DI 5

GND 6

GND 7

VCC

14

N/C

13

A

12

B

11

Z

10

Y

9

N/C

8

RO 1

RE 2

DE 3

DI 4

VCC

8

B/Z

7

A/Y

6

GND

5

XR33052, XR33055 and XR33058 Half-duplex

XR33053 Full-duplex