6N137, VO2601, VO2611, VO2630, VO2631, VO4661 High Speed Optocoupler, Single and Dual, 10 MBd
6n137 ground problem - General Electronics - Arduino Forum
Major Brands 6N137 Opt Coupler, Logic Output, Open Collector, DC Input, 1 Channel, 8-Pin, Dip Black, 6.86 mm W x 3.04 mm H x 9.91 mm L (Pack of 10): Amazon.com: Industrial & Scientific
10PCS 6N137 New Logic-Out Open Collector DC-IN 1-CH 8-Pin PDIP | eBay
6N137 | Hackaday
Arduino PWM 31kHz, PC817 and 6N137 - General Electronics - Arduino Forum
Optically isolated servo motor - Wiring (6n137 and 4N35) - Motors, Mechanics, Power and CNC - Arduino Forum