ISO14xx 5kVRMS Isolated RS-485/RS-422 Transceiver

With Robust EMC

1 Features

• Compatible with TIA/EIA-485-A

• PROFIBUS compatible at 5V bus-side supply

• Bus I/O protection

– ±30kV HBM

– ±16kV IEC 61000-4-2 Contact discharge

– ±4kV IEC 61000-4-4 Electrical fast transient

• Low-EMI 500kbps, 12Mbps and 50Mbps Data

Rates

• 1.71V to 5.5V logic-side supply (VCC1), 3V to 5.5V

bus-side supply (VCC2)

• Failsafe receiver for bus open, short, and idle

• 1/8 Unit load up to 256 nodes on bus

• 100kV/µs (typical) high common-mode transient

immunity

• Extended temperature range from –40°C to 125°C

• Glitch-free power-up and power-down for hot plug-

in

• Wide-body SOIC-16 package

• Pin compatible to most isolated RS-485

transceivers

• Safety-related certifications:

– 7071VPK VIOTM and 1500VPK VIORM (reinforced

and basic options) per DIN VDE V

0884-11:2017-01

– 5000VRMS isolation for 1 minute per UL 1577

– IEC 60950-1, IEC 62368-1, IEC 60601-1 and

IEC 61010-1 certifications

– CQC, TUV, and CSA approvals

2 Applications

• Grid infrastructure

• Solar inverter

• Factory automation & control

• Motor drives

• HVAC systems and building automation

3 Description

The

ISO14xx

devices

are

galvanically-isolated

differential line transceivers for TIA/EIA RS-485

and RS-422 applications. These noise-immune

transceivers are designed to operate in harsh

industrial environments. The bus pins of these

devices can endure high levels of IEC electrostatic

discharge (ESD) and IEC electrical fast transient

(EFT) events which eliminates the need for additional

components on bus for system-level protection. The

devices are available for both basic and reinforced

isolation (see Reinforced and Basic Isolation Options).

Package Information

PART NUMBER

PACKAGE(1)

PACKAGE SIZE(2)

ISO1410, ISO1410B

SOIC (16)

10.30mm × 10.30mm

ISO1412, ISO1412B

ISO1430, ISO1430B

ISO1432, ISO1432B

ISO1450, ISO1450B

ISO1452, ISO1452B

(1)

For more information, see Section 15.

(2)

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

includes pins, where applicable.

Reinforced and Basic Isolation Options

Feature

ISO14xx

ISO14xxB

Protection level

Reinforced

Basic

Surge test voltage per VDE 10000VPK

6000VPK

Isolation rating per UL

5000VRMS

5000VRMS

Working voltage per VDE

1060VRMS /

1500VPK

1060VRMS /

1500VPK

MCU

GND1

Logic Supply

Galvanic Isolation

Barrier

VDD

DGND

Logic Ground

RE

VCC1

D

R

VCC2

B

TI Isolated

Transceiver

A

GND2

RS485 Bus

Bus-Side Supply

Isolated Ground

DE

Simplified Application Schematic

ISO1450, ISO1452, ISO1410, ISO1412, ISO1430, ISO1432

SLLSF22H – APRIL 2018 – REVISED JUNE 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.