■ Features
1. AC input response
2. High input current ( I F : MAX. 150mA )
3. High isolation voltage between input and output (Viso : 5 000 Vrms )
4. Low collector dark current
   (I CEO : MAX. 10 - 7A at VCE = 20V)
5. TTL compatible output
6. Recognized by UL, file No. E64380

■ Aapplications
1. Telephone sets
2. System appliances, measuring instruments
3. Signal transmission between circuits of different potentials and impedances