ISO164x Robust-EMC Bidirectional I2C Digital Isolators

1 Features

Communication

– ISO1640: Bidirectional SDA and SCL

• Supports up to 1.7 MHz Operation

• Robust isolation barrier:

working voltage

– Up to 5 kV surge capability

– ±100 kV/μs typical CMTI

• Supply range: 3 V to 5.5 V (Side 1) and 2.25 V to

5.5 V (Side 2)

• Open-Drain Outputs With 3.5-mA Side 1 and 50-

mA Side 2 Sink Current Capability

• Max capacitive load: 80 pF (Side 1) and 400 pF

(Side 2)

• 8-SOIC (D-8) Package Options

• –40°C to +125°C Operating Temperature

• ±8 kV IEC-ESD 61000-4-2 contact discharge

protection across isolation barrier

• Safety-Related Certifications (planned):

– UL 1577 Component Recognition Program

– DIN V VDE V 0884-11

– IEC 60950-1, IEC62368-1, IEC 61010-1, IEC

60601-1 and GB4943.1-2011 certifications

2 Applications

• SMBus and PMBus Interfaces

• Power Over Ethernet (PoE)

• Motor Control Systems

• Battery Management

.

3 Description

The ISO1640 (ISO164x) device is a hot swappable,

low-power, bidirectional isolator that is compatible with

Each isolation channel in this low emissions device

has a logic input and open drain output separated by

barrier. This family includes devices certified by VDE,

UL, CSA, TUV and CQC. The ISO1640 has two

isolated bidirectional channels for clock and data

lines. ISO1640 integrates logic required to support

bidirectional channels, providing a much simpler

design and smaller footprint when compared to

optocoupler-based solutions.

Device Information (1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

ISO1640BD

SOIC (8)

4.90 mm × 3.91 mm

(1)

For all available packages, see the orderable addendum at

the end of the data sheet.

Reinforced, Basic, and Functional Isolation

Options

PART NUMBER

ISO164xBD

Protection Level

Basic

Surge Test Voltage

Isolation Rating

Working Voltage

VCC2

VCC1

SDA2

or SCL2

SDA1

or SCL1

GND1

GND2

Simplified Isolated Bidirectional Data Channel

Schematic

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ISO1640

SLLSFC2 – OCTOBER 2020

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ISO1640

SLLSFC2 – OCTOBER 2020

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.