ISO6741 datasheet(29/46 Pages) TI

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9 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.

9.1 Application Information

The ISO674x-Q1 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. The ISO674x-Q1 devices use single-ended CMOS-logic switching technology. The supply voltage

range is from 1.71 V to 5.5 V for both supplies, VCC1 and VCC2. Since an isolation barrier separates the two

sides, each side can be sourced independently with any voltage within recommended operating conditions. As

an example, it is possible to supply ISO674x-Q1 VCC1 with 3.3 V (which is within 1.71 V to 5.5 V) and VCC2 with

5V (which is also within 1.71 V to 5.5 V). You can use the digital isolator as a logic-level translator in addition to

providing isolation. 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.

9.2 Typical Application

Figure 9-1 shows ISO6741-Q1 in a belt starter generator application.

MCU

TMS570

ISO6741-Q1

TCAN1043

CANH

CANL

WAKE

48 V Side

12 V Side

nSTB

TXD

RXD

Figure 9-1. Belt Starter Generator Application

www.ti.com

ISO6740-Q1, ISO6741-Q1, ISO6742-Q1

SLLSFG4A – AUGUST 2020 – REVISED JANUARY 2021

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Product Folder Links: ISO6740-Q1 ISO6741-Q1 ISO6742-Q1

ISO6741 Datasheet(PDF) 29 Page - Texas Instruments