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GNDO

GNDI

INx

VCCO

VCCI

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ISO7520C, ISO7521C

SLLSE39E – JUNE 2010 – REVISED MAY 2015

ISO752xC Low-Power 5 kVRMS Dual-Channel Digital Isolators

1 Features

3 Description

The ISO7520C and ISO7521C provide galvanic

1

•

Highest Signaling Rate: 1 Mbps

isolation of up to 4243 VRMS for 1 minute per UL and

•

Propagation Delay Less Than 20 ns

6000 VPK per VDE. These devices are also certified

•

Low-Power Consumption

to 5000 VRMS reinforced insulation per end equipment

standards IEC 60950-1, IEC 61010-1, and IEC

•

Wide Ambient Temperature: –40°C to 105°C

60601-1. These digital isolators have two isolated

•

50 kV/µs Transient Immunity Typical

channels

with

unidirectional

(ISO7520C)

and

•

Operates From 3.3-V or 5-V Supply and Logic

bidirectional

(ISO7521C)

channel

configurations.

Levels

Each isolation channel has a logic input and output

buffer separated by a silicon oxide (SiO2) insulation

•

3.3-V and 5.0-V Level Translation

barrier. Used in conjunction with isolated power

•

Safety and Regulatory Approvals

supplies, these devices prevent noise currents on a

–

6000 VPK Isolation per DIN V VDE V 0884-10

data bus or other circuits from entering the local

and DIN EN 61010-1

ground and interfering with or damaging sensitive

circuitry. The devices have TTL input thresholds and

–

4243 VRMS Isolation for 1 Minute per UL 1577

can operate from 3.3- and 5-V supplies. All inputs are

–

CSA Component Acceptance Notice 5A, IEC

5-V tolerant when supplied from 3.3-V supplies.

60950-1, IEC 61010-1, and IEC 60601-1 End

NOTE: The ISO7520C and ISO7521C are specified

Equipment Standards

for signaling rates up to 1 Mbps. Due to their fast

–

TUV 5000 VRMS Isolation per EN 60950-1 and

response time, these devices will also transmit faster

EN 61010-1

data with much shorter pulse widths. Designers must

–

CQC Certification per GB4943.1-2011

add external filtering to remove spurious signals with

input pulse duration < 20 ns, if desired.

2 Applications

Device Information(1)

•

Opto-Coupler Replacement in:

PART NUMBER

PACKAGE

BODY SIZE (NOM)

–

Industrial Field-Buses

ISO7520C

SOIC (16)

10.30 mm × 7.50 mm

–

ProfiBuses

ISO7521C

–

ModBuses

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

–

DeviceNet™ Data Buses

the end of the data sheet.

–

Servo Control Interfaces

–

Motor Control

–

Power Supplies

–

Battery Packs

Simplified Schematic

(1)

VCCI and GNDI are supply and ground connections respectively for the input channels.

(2)

VCCO and GNDO are supply and ground connections respectively for the output channels.

1

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.