The PS2705-1, PS2705-2, PS2705-4 are optically coupled isolators containing two GaAs light emitting diodes and an NPN silicon phototransistor. These packages are SOP (Small Outline Package) type and have shield effect to cut off ambient light. They are designed for high density mounting applications.
The PS2705‑1, PS2705‑2 and PS2705‑4 are optically coupled isolators that contain two GaAs LEDs and an NPN phototransistor. They are supplied in SOP (Small Outline Package) formats with 4‑pin, 8‑pin or 16‑pin configurations and are intended for high‑density mounting applications such as hybrid ICs, telephone/FAX, PLCs and power supplies.
Key electrical characteristics include a 3 750 Vrms isolation voltage, high‑speed switching (typical rise time 3 µs), and a current transfer ratio (CTR) ranging from 100 % typical up to 300 % depending on the device. The datasheet also provides absolute maximum ratings, package dimensions, taping specifications and long‑term CTR degradation curves.
| Isolation Voltage (BV) | 3 750 Vrms |
|---|---|
| Current Transfer Ratio (CTR) typical | 100 % TYP. |
| Switching time (tr) | 3 µs TYP. |
| Package type | SOP (Small Outline Package) |
| Pin count options | 4‑pin, 8‑pin, 16‑pin |
The devices are rated for an isolation voltage of 3 750 Vrms.
The typical CTR is 100 % according to the datasheet.
They are offered in SOP packages with 4‑pin (PS2705‑1), 8‑pin (PS2705‑2) and 16‑pin (PS2705‑4) configurations.