These devices are useful where large common-mode input signals exist, and in applications that require high-voltage isolation between circuits. Applications include line receivers, telephone ring detectors, power line monitors, high-voltage status indicators, and circuits that require isolation between input and output.
●The HCPL2730 and HCPL2731 dual-channel high-gain optocouplers each consists of a pair of light-emitting diodes and integrated high-gain photon detectors. The VCC and output terminal may be tied together to achieve conventional photodarlington operation. An integrated emitter-base bypass resistor is provided for low leakage.
●The CHPL2730 is designed for use primarily in TTL applicaions. An LED input current of 1.6 mA and a minimum current-transfer ratio of 300% from 0°C to 70°C allow operation with one TTL-load input and one TTL-load output utilizing a 2.2-k pullup resistor.
●The HCPL2731 is designed for use in CMOS, LSTTL, or other low-power applications. This device has a minimum current-transfer ratio of 400% for only 0.5-mA input current over an operating temperature range of 0°C to 70°C.
● Dual-Channel Optocouplers
● High Current Transfer Ratio . . . 1800% Typ at IF = mA
● Low Input Current Requirement . . . 0.5 mA
● High-Speed Switching . . . 100 kbit/s Typ
● High Common-Mode Transient Immunity . . . 500 V/us Typ
● High-Voltage Electrical Insulation . . . 3000 V DC Min
● High Output Current Rating of 60 mA
● UL Recognized . . . File Number 65085
