The PS8821-1, -2 are optically coupled isolators containing a GaAlAs LED on the light emitting diode (input side) and a PIN photodiode and a high-speed amplifier transistor on the output side on one chip. The PS8821-2 is suitable for high density applications. It features 40% reduction of mounting area (5-pin SOP × 2), low power consumption (VCC = 3.3 V), high isolation voltage (BV = 2 500 Vr.m.s.), high-speed response (tPHL = 0.6 μs MAX., tPLH = 0.9 μs MAX.), and Pb-Free product. It is approved by UL (File No. E72422) and DIN EN60747-5-2 (VDE0884 Part2).
The PS8821‑1 and PS8821‑2 are high‑speed photo‑couplers that integrate a GaAlAs LED and a PIN photodiode with an amplifier on a single chip. They are offered in 8‑pin SSOP packages and are suitable for high‑density applications such as Power over Ethernet and computer peripherals.
The document provides detailed mechanical dimensions, ordering numbers, absolute maximum ratings, recommended operating conditions, and electrical characteristics, along with typical performance graphs and safety handling instructions.
| Isolation Voltage (BV) | 2500 Vrms |
|---|---|
| Supply Voltage (VCC) | 3.3 V (typical) |
| Forward Current (IF) | 25 mA (max) |
The devices are rated for an isolation voltage of 2500 Vrms.
The recommended supply voltage range is 3.0 V to 3.6 V, with 3.3 V typical.
The maximum forward current is 25 mA per channel.
Yes, the parts are listed as Pb‑free in the ordering information.