ISO7631FM, ISO7631FC

ISO7640FC, ISO7641FC

SLLSEC3A – SEPTEMBER 2012 – REVISED SEPTEMBER 2012

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These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam

during storage or handling to prevent electrostatic damage to the MOS gates.

DESCRIPTION CONTINUED

Used in conjunction with isolated power supplies, these devices prevent noise currents on a data bus or other

circuits from entering the local ground and interfering with or damaging sensitive circuitry. The devices have TTL

input thresholds and can operate from 2.7 V (M-Grade), 3.3 V and 5 V supplies. All inputs are 5 V tolerant when

supplied from 3.3 V or 2.7 V supplies.

PIN DESCRIPTIONS

PIN

I/O

DESCRIPTION

NAME

ISO7640

ISO7641

ISO7631

INA

3

3

3

I

Input, channel A

INB

4

4

4

I

Input, channel B

INC

5

5

12

I

Input, channel C

IND

6

11

-

I

Input, channel D

OUTA

14

14

14

O

Output, channel A

OUTB

13

13

13

O

Output, channel B

OUTC

12

12

5

O

Output, channel C

OUTD

11

6

-

O

Output, channel D

Enables (when input is High or Open) or Disables (when input is Low) OUTA, OUTB,

EN

10

-

-

I

OUTC and OUTD of ISO7640

Enables (when input is High or Open) or Disables (when input is Low) OUTD of

EN1

-

7

7

I

ISO7641 and OUTC of ISO7631

Enables (when input is High or Open) or Disables (when input is Low) OUTA, OUTB,

and OUTC of ISO7641

EN2

-

10

10

I

Enables (when input is High or Open) or Disables (when input is Low) OUTA and

OUTB of ISO7631

1

1

1

–

16

16

16

–

GND1

2,8

2,8

2,8

–

GND2

9,15

9,15

9,15

–

NC

7

-

6,11

-

No Connect pins are floating with no internal connection

INPUT

OUTPUT

INPUT

OUTPUT ENABLE

OUTPUT

(INx)

(ENx)

(OUTx)

H

H or Open

H

L

H or Open

L

PU

PU

X

L

Z

Open

H or Open

L

PD

PU

X

H or Open

L

PD

PU

X

L

Z

PU

PD

X

X

Undetermined

(1)

= Low Level; Z = High Impedance

2

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Product Folder Links: ISO7631FM ISO7631FC ISO7640FC ISO7641FC