Description
These high gain series couplers use a Light Emitting Diode and an integrated high gain photodetec tor to provide extremely high current transfer ratio between input and output. Separate pins for the photodiode and output stage result in TTL compatible saturation voltages and high speed operation. Where desired the VCC and VO terminals may be tied together to achieve conven tional photodarlington operation. A base access terminal allows a gain bandwidth adjustment to be made

Features
● High current transfer ratio – 2000% typical (4500 % typical for HCNW139/138)
● Low input current requirements – 0.5 mA
● TTL compatible output – 0.1 V VOL typical
● Performance guaranteed over temperature 0°C to 70°C
● Base access allows gain bandwidth adjustment
● High output current – 60 mA
● Safetyapproval
          UL recognized – 3750 V rms for 1 minute and 5000 Vrms* for 1 minute per UL 1577 CSA approved
          IEC/EN/DIN EN 60747-5-2 approved with VIORM = 1414 Vpeak for HCNW139 and HCNW138
● Available in 8-Pin DIP or SOIC-8 footprint or widebody package
● MIL-PRF-38534 hermetic version available (HCPL-5700/1)

Applications
● Ground isolate most logic families – TTL/TTL, CMOS/TTL, CMOS/CMOS, LSTTL/TTL, CMOS/LSTTL
● Low input current line receiver
● High voltage insulation (HCNW139/138)
● EIA RS-232C line receiver
● Telephone ring detector
● 117 V ac line voltage status indicator – low input power dissipation
● Low power systems – ground isolation