The TLP521‑1, TLP521‑2 and TLP521‑4 are solid‑state optocouplers that combine a gallium‑arsenide infrared emitting diode with a photo‑transistor. They are offered in 8‑lead (2‑channel) and 16‑lead (4‑channel) DIP packages for use in general electronics, industrial robotics, and appliance applications.
Key specifications include a 2500 Vrms isolation voltage, 55 V collector‑emitter voltage, forward current up to 70 mA, and operating temperature from –55 °C to 100 °C. The datasheet also provides recommended supply voltages (5‑24 V), switching times, and characteristic curves for various duty cycles.
| Isolation Voltage | 2500 Vrms (min) |
|---|---|
| Collector‑Emitter Voltage (VCEO) | 55 V (min) |
| Forward Current (If) | 70 mA (typ) |
| Supply Voltage (VCC) | 5 V – 24 V |
| Collector Current (Ic) | 50 mA (max) |
The isolation voltage is rated at a minimum of 2500 Vrms.
The recommended supply voltage is between 5 V and 24 V.
The maximum collector current is 50 mA.