3

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com

SP3080E-SP3088E_100_062309

PIN ASSIGNMENTS

Pin Number

Pin Name

Pin Function

Full-Duplex

Half -

Duplex

SP3080E SP3081E SP3082E

SP3083E SP3084E SP3085E

SP3086E SP3087E SP3088E

2

2

1

RO

Receiver Output. When RE is low

and if (A – B) ≥ -40mV, RO is high.

If (A – B) ≤ - 200mV, RO is low.

3

-

2

RE

REREE

Receiver Output Enable. When RE

is low, RO is enabled. When RE

is high, RO is high impedance.

Drive RE high and DE low to enter

shutdown mode. RE is a hot-swap

input.

4

-

3

DE

Driver Output Enable. When DE

is high, outputs are enabled.

When DE is low, outputs are high

impedance. Drive DE low and RE

high to enter shutdown mode. DE

is a hot-swap input.

5

3

4

DI

Driver Input. With DE high, a low

level on DI forces non-inverting

output low and inverting output

high. A high level on DI forces non-

inverting output high and inverting

output low.

6, 7

4

5

GND

Ground

9

5

-

Y

Non-inverting Driver Output

10

6

-

Z

Inverting Driver Output

11

7

-

B

Inverting Receiver Input

-

-

7

B

Inverting Receiver Input and

Inverting Driver Output

12

8

-

A

Non-inverting Receiver Input

-

-

6

A

Non-inverting Receiver Input and

Non-inverting Driver Output

14

1

8

GND with a 0.1uF capacitor.

1, 8, 13

-

-

NC

No Connect, not internally

connected

Note: On 14-pin packages connect both pins 6 and 7 to Ground.