OUTx

GNDO

GNDI

Series Isolation

Capacitors

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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. PRODUCTION DATA.

ISO7740, ISO7741, ISO7742

SLLSEP4G – MARCH 2016 – REVISED FEBRUARY 2020

ISO774x High-Speed, Robust-EMC Reinforced and Basic Quad-Channel Digital Isolators

1

1 Features

1

•

100 Mbps data rate

•

Robust isolation barrier:

–

working voltage

–

–

Up to 12.8 kV surge capability

–

±100 kV/μs typical CMTI

•

Wide supply range: 2.25 V to 5.5 V

•

2.25-V to 5.5-V level translation

•

Default output high (ISO774x) and low

(ISO774xF) options

•

Wide temperature range: –55°C to 125°C

•

Low power consumption, typical 1.5 mA per

channel at 1 Mbps

•

Low propagation delay: 10.7 ns typical

(5-V Supplies)

•

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) and QSOP (DBQ-16)

package options

•

Automotive version available: ISO774x-Q1

•

Safety-related certifications:

–

DIN VDE V 0884-11:2017-01

–

UL 1577 component recognition program

–

CSA, CQC, and TUV certifications

2 Applications

•

Industrial automation

•

Motor control

•

Power supplies

•

Solar inverters

•

Medical equipment

3 Description

The ISO774x devices are high-performance, quad-

channel

digital

isolators

with

5000

ratings per UL 1577. This family includes devices with

reinforced insulation ratings according to VDE, CSA,

TUV and CQC. The ISO7741B device is designed for

applications that require basic insulation ratings only.

The ISO774x 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 a double capacitive

silicon

dioxide

devices come with enable pins which can be used to

put the respective outputs in high impedance for

multi-master driving applications and to reduce power

consumption. The ISO7740 device has all four

channels in the same direction, the ISO7741 device

has

three

forward

and

one

reverse-direction

channels, and the ISO7742 device has two forward

and two reverse-direction channels. If the input power

or signal is lost, default output is high for devices

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

the Device Functional Modes section for further

details.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

ISO7740

ISO7741

ISO7742

SOIC (DW)

10.30 mm × 7.50 mm

SSOP (DBQ)

4.90 mm × 3.90 mm

ISO7741B

SOIC (DW)

10.30 mm × 7.50 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Simplified Schematic

GNDI=Input ground, GNDO=Output ground