BS ISO/IEC 9549:1990

This standard BS ISO/IEC 9549:1990 Information technology. Galvanic isolation of balanced interchange circuits is classified in these ICS categories:

• 35.200 Interface and interconnection equipment

Specifies galvanic isolation of balanced interchange circuits using optocoupler integrated circuit technology and is provided for data transmission in the two-condition code, e.g. NRZ.