This document introduces NEC Compound Semiconductor Devices' PS9851-1,-2 optically coupled isolators. The product adopts GaAlAs LED and CMOS output IC, has high common mode transient immunity (CMR), high-speed CMOS output type photocouplers, designed for high-speed logic interface circuits.
The PS9851‑1 and PS9851‑2 are high‑speed, high‑noise‑reduction optically coupled isolators featuring a GaAlAs LED input and a CMOS output. They provide 15 Mbps data rates, high common‑mode transient immunity, and a 2500 V rms isolation voltage, making them suitable for high‑speed logic interfaces.
The document includes package dimensions, ordering information, absolute maximum ratings, recommended operating conditions, electrical characteristics, handling and soldering guidelines, and safety and disposal instructions.
| Isolation Voltage (BV) | 2500 V rms |
|---|---|
| Forward Current (IF) – Max | 20 mA |
| Supply Voltage (Voo) – Typical | 5.0 V |
| Operating Ambient Temperature | -40 °C to +100 °C |
| Propagation Delay Time (typical) | 35–60 ns |
| Maximum Reverse Voltage (VR) | 5 V |
The isolation voltage is rated at 2500 V rms.
The recommended supply voltage is 5 V (typical range 4.5 V to 5.5 V).
Peak reflow temperature should be 260 °C or below, with a maximum of 10 seconds at that temperature.
The maximum forward current is 20 mA.