The OLI249 is designed especially for hybrid applications that require optical isolation with high current transfer ratio (CTR) and low saturation VCE. Each OLI249 consists of an LED and N-P-N silicon phototransistor that is mounted and coupled in a miniature custom ceramic package. The low input current makes the OLI249 well suited for direct Complementary Metal Oxide Semiconductor (CMOS) to Low Power Schottky Transistor-Transistor Logic (LSTTL)/TTL interfaces.

Electrical parameters are similar to the JEDEC registered 4N49 optocoupler, but with better CTR degradation characteristics due to radiation exposure.

Device mounting is achieved by standard hybrid assembly with non-conductive epoxies. Gold or aluminum wire bonding can be used to make electrical connections for maximum placement flexibility.

Special electrical parametric selections are available upon request.