ADuM1420

Rev. A | Page 7 of 12

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

NC

NC

NC

NC

NC

NC

NC

ED DISABLE

1

2

3

4

28

27

26

25

5

24

6

23

7

22

8

21

9

20

10

19

11

18

12

17

13

16

14

15

NC = NO CONNECT

ADuM1420

TOP VIEW

(Not to Scale)

NOTES

RECOMMENDED. PIN 20 AND PIN 23 ARE INTERNALLY CONNECTED. CONNECTING

PIN 25 ARE FLOATING AND SHOULD BE LEFT UNCONNECTED.

Figure 2. Pin Configuration

Table 8. Pin Function Descriptions

Pin No.

Mnemonic

Description

1

Output A.

2

Output A Supply Voltage, 12 V to 18 V.

3

Ground Reference for Output A.

4 to 6, 18, 19, 24, 25

NC

No Connection.

7, 14

Ground Reference for Input Logic Signals.

8

Input Supply Voltage, 4.5 V to 5.5 V.

9

Logic Input A.

10

Logic Input B.

11

Logic Input C.

12

Logic Input D.

13

ED DISABLE

Error Detection Disable. Disables the internal error detection function so that the logic outputs

always match the logic inputs.

15

Ground Reference for Output D.

16

Output D.

17

Output D Supply Voltage, 12 V to 18 V.

20, 23

Ground Reference for Output C.

21

Output C.

22

Output C Supply Voltage, 12 V to 18 V.

26

Ground Reference for Output B.

27

Output B.

28

Output B Supply Voltage, 12 V to 18 V.