HCPL-4731

These devices are very low power consumption, high gain single and dual channel optocouplers. The HCPL-4731 represents the dual channel 8-Pin DIP configuration and is pin compatible with the popular standard HCPL-2731. These high gain couplers use an AlGaAs LED and an integrated high gain photodetector to provide an extremely high current transfer ratio between input and output. Separate pins for the photodiode and output stage results in TTL compatible saturation voltages and high speed operation. Where desired, the VCC and VO terminals may be tied together to achieve conventional Darlington operation (single channel package only). These devices are designed for use in CMOS, LSTTL or other low power applications. They are especially well suited for ISDN telephone interface and battery operated applications due to the low power consumption. A 700% minimum current transfer ratio is guaranteed from 0°C to 70°C operating temperature range at 40µA of LED current and VCC = 3 V. The SO-8 does not require “through holes” in a PCB. This package occupies approximately one-third the footprint area of the standard dual-in-line package. The lead profile is designed to be compatible with standard surface mount processes.

• Ultra low input current capability - 40µA
• Specified for 3 V operation
  • Typical power consumption: <1 mW
  • Input power: <50µW
  • Output power: <500µW
• Will operate with VCC as low as 1.6 V
• High current transfer ratio: 3500% at IF = 40µA
• TTL and CMOS compatible output
• Specified ac and dc performance over temperature: 0°C to 70°C
• Safety approval: UL recognized – 3750 V rms for 1 minute and 5000 V rms for 1 minute per UL1577 CSA approved IEC/EN/DIN EN 60747-5-2 approved with VIORM = 630 V peak
• 8-pin product compatible with 6N138/6N139 and HCPL-2730/HCPL-2731
• Available in 8-Pin DIP and SOIC-8 footprint
• Through hole and surface mount assembly available