ISO7741FDW datasheet(29/52 Pages) TI

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Vcc1

Vcc2

GND1

GND2

OUTA

2,8

9,15

XOUT

XIN

MSP430

G2132

(14-PW)

INA

OUTD

ISO7741

DVss

DVcc

0.1 F

EN1

EN2

INB

OUTB

OUTC

IND

0.1 F

INC

SDI

P1.4

SCLK

SDO

4.7 k

VBD

AGND

CH0

1,22

SCLK

SDI

SDO

ADS7953

CH15

BDGND

REFP

MXO

AINP

REFM

VIN

GND

VOUT

REF5025

1 F

10 F

0.1 F

MBR0520L

1:1.33

0.1 F

SN6501

Vcc

4,5

GND

3.3 V

GND

OUT

TLV70733

10 F

3.3 VISO

10 F

22 F

Analog

Inputs

ISO-BARRIER

ISO7740, ISO7741, ISO7742

www.ti.com

SLLSEP4G – MARCH 2016 – REVISED FEBRUARY 2020

Product Folder Links: ISO7740 ISO7741 ISO7742

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10 Application and Implementation

NOTE

Information in the following applications sections is not part of the TI component

specification, and TI does not warrant its accuracy or completeness. TI’s customers are

responsible for determining suitability of components for their purposes. Customers should

validate and test their design implementation to confirm system functionality.

10.1 Application Information

The ISO774x devices are high-performance, quad-channel digital isolators. These devices come with enable pins

on each side which can be used to put the respective outputs in high impedance for multi master driving

applications and reduce power consumption. The ISO774x devices use single-ended CMOS-logic switching

technology. The voltage range is from 2.25 V to 5.5 V for both supplies, VCC1 and VCC2. When designing with

digital isolators, keep in mind that because of the single-ended design structure, digital isolators do not conform

to any specific interface standard and are only intended for isolating single-ended CMOS or TTL digital signal

lines. The isolator is typically placed between the data controller (that is, μC or UART), and a data converter or a

line transceiver, regardless of the interface type or standard.

10.2 Typical Application

Figure 22 shows the isolated serial peripheral interface (SPI).

Figure 22. Isolated SPI for an Analog Input Module With 16 Input

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