ISO674x General-Purpose Reinforced Quad-Channel Digital Isolators with Robust

EMC

1 Features

• 50 Mbps data rate

• Robust isolation barrier:

– Up to 10 kV surge capability

– ±75 kV/μs typical CMTI

• Wide supply range: 1.71 V to 1.89 V and 2.25 V to

5.5 V

• 1.71 V to 5.5 V level translation

• Default output high (ISO674x) and low (ISO674xF)

options

• Wide temperature range: –40°C to 125°C

• 1.6 mA per channel typical at 1 Mbps

• Low propagation delay: 11 ns typical

• Robust electromagnetic compatibility (EMC)

– System-level ESD, EFT, and surge immunity

– ±8 kV IEC 61000-4-2 contact discharge

protection across isolation barrier

– Low emissions

• Wide-SOIC (DW-16) Package

• Safety-Related Certifications (pending):

– DIN V VDE 0884-11:2017-01

– UL 1577 component recognition program

– IEC 60950-1, IEC 62368-1, IEC 61010-1,

IEC60601-1 and GB 4943.1-2011 certifications

2 Applications

• Power supplies

• Grid, Electricity meter

• Motor drives

• Factory automation

• Building automation

• Lighting

• Appliances

3 Description

The ISO674x devices are high-performance, quad-

channel digital isolators ideal for cost-sensitive

ratings per UL 1577. These devices are also certified

by VDE, TUV, CSA, and CQC.

The ISO674x devices provide high electromagnetic

immunity

and

low

emissions

at

low

power

consumption, while isolating CMOS or LVCMOS

digital I/Os. Each isolation channel has a logic input

and output buffer separated by TI's double capacitive

come with enable pins which can be used to put the

respective outputs in high impedance for multi-master

driving applications. The ISO6740 device has all four

channels in the same direction, ISO6741 device has

three forward and one reverse-direction channels, and

ISO6742 device has two forward and two reverse-

direction channels. In the event of input power or

signal loss, the default output is high for devices

without suffix F and low for devices with suffix F. See

Device Functional Modes section for further details.

Used in conjunction with isolated power supplies,

these devices help prevent noise currents on data

buses, such as UART, SPI, RS-485, RS-232, and

CAN from damaging sensitive circuitry. Through

innovative chip design and layout techniques, the

electromagnetic compatibility of the ISO674x devices

has been significantly enhanced to ease system-level

ESD, EFT, surge, and emissions compliance. The

ISO674x family of devices is available in a 16-pin

SOIC wide-body (DW) package and is a pin-to-pin

upgrade to the older generations.

Device Information

PART NUMBER(1)

PACKAGE

BODY SIZE (NOM)

ISO6740, ISO6740F

ISO6741, ISO6741F

ISO6742, ISO6742F

SOIC (DW)

10.30 mm × 7.50 mm

(1)

For all available packages, see the orderable addendum at

the end of the data sheet.

OUTx

GNDO

GNDI

Series Isolation

Capacitors

Copyright © 2016, Texas Instruments Incorporated

INx

ENx

GNDI=Input ground, GNDO=Output ground

Simplified Schematic

www.ti.com

ISO6731, ISO6740, ISO6741, ISO6742

SLLSFJ6D – DECEMBER 2019 – REVISED MARCH 2021

Copyright © 2021 Texas Instruments Incorporated

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Product Folder Links: ISO6731 ISO6740 ISO6741 ISO6742

ISO6731, ISO6740, ISO6741, ISO6742

SLLSFJ6D – DECEMBER 2019 – REVISED MARCH 2021

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. ADVANCE INFORMATION for preproduction products; subject to change

without notice.