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FUNCTION DIAGRAM

Input

+

Filter

GalvanicIsolation

Barrier

Vref

Vref

DataMUX

EN

IN

OSC

+

PWM

ACDetect

OutputBuffer

DCChannel

ACChannel

Filter

PulseWidth

Demodulation

CarrierDetect

OUT

ISO7240

ISO7241

ISO7242

SLLS868A – SEPTEMBER 2007 – REVISED DECEMBER 2007

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.

INPUT

OUTPUT ENABLE

OUTPUT

(IN)

(EN)

(OUT)

H

H or Open

H

L

H or Open

L

PU

PU

X

L

Z

Open

H or Open

H

PD

PU

X

H or Open

H

PD

PU

X

L

Z

(1)

PU = Powered Up; PD = Powered Down ; X = Irrelevant; H = High Level; L = Low Level

2

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Copyright © 2007, Texas Instruments Incorporated

Product Folder Link(s): ISO7240 ISO7241 ISO7242