1 Features

1• Signaling Rate: 150 Mbps

• Low Power Consumption, Typical I CC per Channel

(3.3-V Supplies):

– ISO7640FM: 2 mA at 25 Mbps

– ISO7641FM: 2.4 mA at 25 Mbps quad•

Low Propagation Delay: 7-ns Typical

• Output Defaults to Low-State in Fail-Safe Mode

• Wide Temperature Range: –40°C to 125°C

• 50-KV/μs Transient Immunity, Typical

• Long Life With SiO2 Isolation Barrier

• Operates From 2.7-V, 3.3-V, and 5-V Supply and

Logic Levels

• Wide Body SOIC-16 Package

• Safety and Regulatory Approvals

– 6000 V PK / 4243 VRMS for 1 Minute per UL

1577

– VDE 6000 VPK Transient Overvoltage, 1414

VPK Working Voltage per DIN V VDE V 0884-

10 (VDE V 0884-10):2006-12

– CSA Component Acceptance Notice 5A, IEC

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

Equipment Standards

– TUV 5 KV RMS Reinforced Insulation per

EN/UL/CSA 60950-1 and EN/UL/CSA 61010-1

– CQC Reinforced Insulation per GB4943.1-

2011

2 Applications

• Optocoupler Replacement in:

– Industrial Fieldbus

– Profibus

– Modbus

– DeviceNet™ Data Buses

– Servo Control Interface

– Motor Control

– Power Supplies

– Battery Packs

3 Description

ISO7640FM and ISO7641FM provide galvanic

isolation up to 6 KVPK for 1 minute per UL and VDE.

These devices are also certified up to 5-KVRMS

Reinforced isolation at a working voltage of 400 VRMS

per end equipment standards EN/UL/CSA 60950-1

and 61010-1. ISO7640F and ISO7641F are quad•

channel isolators; ISO7640F has four forward and ISO7641F has three forward and one reverse-

direction channels. Suffix F indicates that output

defaults to Low-state in fail-safe conditions (see

Table 4). M-Grade devices are high-speed isolators capable of 150-Mbps data rate with fast propagation

delays.

Each isolation channel has a logic input and output

buffer separated by a silicon dioxide (SiO2) insulation

barrier. Used in conjunction with isolated power

supplies, these devices prevent noise currents on a

data bus or other circuits from entering the local

ground and interfering with or damaging sensitive

circuitry. The devices have TTL input thresholds and

can operate from 2.7-V, 3.3-V, and 5-V supplies. All

inputs are 5-V tolerant when supplied from 3.3-V or

2.7-V supplies.