ISO7640FM

ISO7641FM

SLLSE89D – SEPTEMBER 2011 – REVISED JULY 2012

www.ti.com

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, 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

INA

3

3

I

Input, channel A

INB

4

4

I

Input, channel B

INC

5

5

I

Input, channel C

IND

6

11

I

Input, channel D

OUTA

14

14

O

Output, channel A

OUTB

13

13

O

Output, channel B

OUTC

12

12

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, OUTC

EN

10

-

I

and OUTD of ISO7640

EN1

-

7

I

Enables (when input is High or Open) or Disables (when input is Low) OUTD of ISO7641

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

EN2

-

10

I

OUTC of ISO7641

1

1

–

16

16

–

GND1

2,8

2,8

–

GND2

9,15

9,15

–

NC

7

-

-

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

Z

(1)

= Low Level; Z = High Impedance

2

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Product Folder Link(s): ISO7640FM ISO7641FM