■ Features
1. AC input response
2. High isolation voltage between input and output ( Viso : 5 000Vrms )
3. Current transfer ratio
   CTR : MIN. 15% at I F = ± 1mA, VCE = 5V
4. Low collector dark current
   ( ICEO : MAX. 10 - 7A at VCE = 20V)
5. TTL compatible output
6. Recognized by UL, file No. E64380

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