The 6N139 is suited for low power logic applications involving CMOS and low power TTL applications.

A 400 % current transfer ratio with only 0.5 mA of LED current is guaranteed.

• High current transfer ratio, 500 %
• Low input current, 1.6 mA
• High common mode rejection, 500 V/μs
• Adjustable bandwidth-access to base
• Material categorization:
for definitions of compliance please see