ADM488/ADM489

–4–

REV. 0

ADM488 PIN FUNCTION DESCRIPTIONS

Pin

Mnemonic

Function

Power Supply, 5 V

± 10%.

2

RO

Receiver Output. When A > B by 200 mV,

RO = high. If A < B by 200 mV, RO = low.

3

DI

Driver Input. A logic Low on DI forces Y low

and Z high while a logic High on DI forces Y

high and Z low.

4

GND

Ground Connection, 0 V

5

Y

Noninverting Driver, Output Y

6

Z

Inverting Driver, Output Z

7

B

Inverting Receiver Input B

8

A

Noninverting Receiver Input A

ADM489 PIN FUNCTION DESCRIPTIONS

DIP/SOIC

TSSOP

Pin

Pin

Mnemonic Function

1, 8, 13

2, 9, 10,

NC

No Connect. No connections

13, 16

are required to this pin.

2

3

RO

Receiver Output. When

enabled if A > B by 200 mV

then RO = high. If A < B by

200 mV then RO = low.

34

RE

Receiver Output Enable. A

low level enables the receiver

output, RO. A high level

places it in a high impedance

state.

4

5

DE

Driver Output Enable. A

high level enables the driver

differential outputs, Y and Z.

A low level places it in a high

impedance state.

5

6

DI

Driver Input. When the

driver is enabled, a logic Low

on DI forces Y low and Z

high, while a logic High on

DI forces Y high and Z low.

6, 7

7, 8

GND

Ground Connection, 0 V

9

11

Y

Noninverting Driver

Output Y

10

12

Z

Inverting Driver Output Z

11

14

B

Inverting Receiver Input B

12

15

A

Noninverting Receiver

Input A

14

1

Power Supply, 5 V

± 10%.

PIN CONFIGURATIONS

8-Lead DIP/SO

1

2

3

4

8

7

6

5

TOP VIEW

(Not to Scale)

ADM488

Y

Z

B

A

RO

DI

GND

14-Lead DIP/SO

14

13

12

11

10

9

8

1

2

3

4

7

6

5

TOP VIEW

(Not to Scale)

NC = NO CONNECT

NC

B

A

NC

RO

RE

DE

ADM489

NC

Y

Z

DI

GND

GND

16-Lead TSSOP

14

13

12

11

16

15

10

9

8

1

2

3

4

7

6

5

TOP VIEW

(Not to Scale)

ADM489

NC = NO CONNECT

NC

B

A

NC

NC

RO

RE

NC

Y

Z

DE

DI

GND

GND

NC