ISO652x General Purpose Dual-Channel Functional Isolators

1 Features

• Dual channel, CMOS output functional isolators

• 50Mbps data rate

• Robust SiO2 isolation barrier with ±150kV/μs

typical CMTI

• Functional Isolation (8-REU):

– 200VRMS, 280VDC working voltage

– 570VRMS, 800VDC transient voltage (60s)

• Functional Isolation (8-D):

– 450VRMS, 637VDC working voltage

– 707VRMS, 1000VDC transient voltage (60s)

• Available in a compact 8-REU package with

>2.2mm creepage

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

5.5V

• 1.71V to 5.5V level translation

• Default output High (ISO652x) and Low

(ISO652xF) Options

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

• 1.8mA per channel typical at 1Mbps at 3.3V

• Low propagation delay: 11ns typical at 3.3V

• Robust electromagnetic compatibility (EMC)

– System-Level ESD, EFT, and surge immunity

– Ultra-low emissions

• Leadless-DFN (8-REU) package and Narrow-

SOIC (8-D) package options

2 Applications

• Power supplies

• Grid, Electricity meter

• Motor drives

• Factory automation

• Building automation

• Lighting

• Appliances

OUTx

GNDO

GNDI

VCCO

VCCI

Series Isolation

Capacitors

Copyright © 2016, Texas Instruments Incorporated

INx

VCCI=Input supply, VCCO=Output supply

GNDI=Input ground, GNDO=Output ground

Simplified Schematic

3 Description

The ISO652x devices are high-performance, dual-

channel functional isolators designed for cost

sensitive, space constrained applications that require

isolation for non-safety applications. The isolation

barrier supports a working voltage of 200VRMS /

280VDC and transient over voltages of 570VRMS /

800VDC.

The 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. ISO6520 has two isolation

channels with both channels in the same direction.

ISO6521 has two isolation channels with one channel

in each direction. 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.

These devices help prevent noise currents on data

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

CAN from damaging sensitive circuitry. Through chip

design and layout techniques, the electromagnetic

compatibility of the devices have been significantly

enhanced to ease system-level ESD and emissions

compliance.

Package Information

PART NUMBER

PACKAGE (1) PACKAGE SIZE(2)

ISO6520, ISO6520F

DFN (8-REU)

3.0mm x 2.0mm

ISO6521, ISO6521F

ISO6520, ISO6520F

D (8)

4.9mm x 6.0mm

ISO6521, ISO6521F

(1)

For all available packages, see the orderable addendum at

the end of the data sheet.

(2)

The package size (length × width) is a nominal value and

includes pins, where applicable.

ISO6520, ISO6521

SLLSFU0B – AUGUST 2023 – REVISED APRIL 2024

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.