ISO7221ADR ISO7221BD UART Interface IC Digital Isolators Dual CH 1/1 1Mbps Dig Iso

1 Features

– VDE Basic Insulation with 4000-V V
PK IOTM

, 560 VPK VIORM per DIN VDE V 0884-11:2017-01

and DIN EN 61010-1 (VDE 0411-1)

• – 2500 VRMS Isolation per UL 1577

• – CSA Approved for IEC 60950-1 and IEC 62368-1

  
  

2 Applications

• Industrial Fieldbus

  • – Modbus

  • – ProfibusTM

  • – DeviceNetTM Data Buses

• Computer Peripheral Interface

• Servo Control Interface

• Data Acquisition

  
  

3 Description

The ISO7220x and ISO7221x family devices are dual-channel digital isolators. To facilitate PCB layout, the channels are oriented in the same direction in the ISO7220x and in opposite directions in the ISO7221x. These devices have a logic input and output buffer separated by TI’s silicon-dioxide (SiO2) isolation barrier, providing galvanic isolation of up to 4000 VPK per VDE. Used in conjunction with isolated power supplies, these devices block high voltage and isolate grounds, as well as prevent noise currents on a data bus or other circuits from entering the local ground and interfering with or damaging sensitive circuitry.