ADM488/ADM489

Rev. D | Page 6 of 16

PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS

VCC 1

RO 2

DI 3

GND 4

A

8

B

7

Z

6

Y

5

ADM488

TOP VIEW

(Not to Scale)

Figure 3. ADM488 8-Lead PDIP/SOIC Pin Configuration

Table 4. ADM488 Pin Function Descriptions

Pin No.

Mnemonic

Description

1

VCC

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.

NC 1

RO 2

RE 3

DE 4

VCC

14

NC

13

A

12

B

11

DI 5

GND 6

GND 7

Z

10

Y

9

NC

8

NC = NO CONNECT

ADM489

TOP VIEW

(Not to Scale)

Figure 4. ADM489 14-Lead PDIP/SOIC Pin Configuration

1

2

3

4

5

6

7

8

NC = NO CONNECT

16

15

14

13

12

11

10

9

NC

RO

RE

GND

DI

DE

VCC

A

B

NC

NC

GND

NC

Y

Z

NC

ADM489

TOP VIEW

(Not to Scale)

Figure 5. ADM489 16-Lead TSSOP Pin Configuration

Table 5. ADM489 Pin Function Descriptions

PDIP/SOIC

Pin No.

TSSOP

Pin No.

Mnemonic

Description

1, 8, 13

2, 9, 10, 13,

16

NC

No Connect. No connections 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.

3

4

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

VCC

Power Supply, 5 V ± 10%.