ISO6731, ISO6740, ISO6741, ISO6742
ISO6731, ISO6740, ISO6741, ISO6742
www.ti.com
SLLSFJ6D – DECEMBER 2019 – REVISED MARCH 2021
SLLSFJ6D – DECEMBER 2019 – REVISED MARCH 2021
ISO674x General-Purpose Reinforced Quad-Channel Digital Isolators with Robust
EMC
1 Features
3 Description
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50 Mbps data rate
Robust isolation barrier:
– High lifetime at 1060 VRMS working voltage
– Up to 5000 VRMS isolation rating
– Up to 10 kV surge capability
The ISO674x devices are high-performance, quad-
channel digital isolators ideal for cost-sensitive
applications requiring up to 5000 VRMS isolation
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
silicon dioxide (SiO2) insulation barrier. These devices
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.
– ±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
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Wide-SOIC (DW-16) Package
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.
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
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Power supplies
Grid, Electricity meter
Motor drives
Factory automation
Building automation
Lighting
Device Information
PART NUMBER(1)
PACKAGE
BODY SIZE (NOM)
ISO6740, ISO6740F
ISO6741, ISO6741F
ISO6742, ISO6742F
SOIC (DW)
10.30 mm × 7.50 mm
Appliances
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
VCCO
VCCI
Series Isolation
Capacitors
INx
OUTx
ENx
GNDI
GNDO
Copyright © 2016, Texas Instruments Incorporated
VCCI=Input supply, VCCO=Output supply
GNDI=Input ground, GNDO=Output ground
Simplified Schematic
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
Copyright © 2021 Texas Instruments Incorporated
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intellectual property matters and other important disclaimers. ADVANCE INFORMATION for preproduction products; subject to change
Product Folder Links: ISO6731 ISO6740 ISO6741 ISO6742
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without notice.