Description
These diode-transistor optocouplers use an insulating layer between a LED and an integrated photodetector to provide electrical insulation between input and output. Separate connections for the photodiode bias and output-transistor collector increase the speed up to a hundred times that of a conventional phototransistor coupler by reducing the base-collector capacitance.

Features
• 15 kV/µs Minimum Common
   Mode Transient Immunity at VCM = 1500 V (4503/0453)
• High Speed: 1 Mb/s
• TTL Compatible
• Available in 8-Pin DIP, SO-8, Widebody Packages
• Open Collector Output
• Guaranteed Performance
   from Temperature: 0°C to 70°C
• Safety Approval
   UL Recognized – 2500 V rms
      for 1 minute (5000 V rms for
      1 minute for HCNW and
      Option 020 devices) per
      UL1577
   CSA Approved
   VDE 0884 Approved
      –VIORM = 630 V peak for
         HCPL-4503#060
      –VIORM = 1414 V peak for
         HCNW devices
   BSI Certified
   (HCNW devices only)
• Dual Channel Version
   Available (253X/4534/053X/0534)
• MIL-STD-1772 Version Available (55XX/65XX/4N55)

Applications
• High Voltage Insulation
• Video Signal Isolation
• Power Transistor Isolation in Motor Drives
• Line Receivers
• Feedback Element in Switched Mode Power Supplies
• High Speed Logic Ground
   Isolation – TTL/TTL, TTL/CMOS, TTL/LSTTL
• Replaces Pulse Transformers
• Replaces Slow Phototransistor Isolators
• Analog Signal Ground Isolation