This product is a photocoupler, mainly used for digital logic isolation, line receiver, feedback control, power supply control, switching power supply, transistor inverter and other applications.
The TLP550 optocoupler integrates a high‑emitting infrared LED with a single‑chip photodiode and transistor in an 8‑lead DIP package. It offers 2500 Vrms isolation, TTL‑compatible logic levels, and a typical switching speed of 0.5 µs. The device is designed for noisy environments and includes UL1577 certification.
The datasheet provides absolute maximum ratings, electrical characteristics, and switching performance. Key parameters include a forward current of 25 mA, peak transient forward current of 1 A, and an operating temperature range from –55 °C to 100 °C. The document also outlines handling precautions and restrictions on product use.
| Isolation voltage | 2500 Vrms (min.) |
|---|---|
| Switching speed | tpHL, tpLH = 0.5 µs (typ.) |
| Forward current (IF) | 25 mA |
| Pulse forward current (IFp) | 50 mA |
| Peak transient forward current (IFPT) | 1 A |
| Reverse voltage (VR) | 5 V |
| Diode power dissipation (Pp) | 45 mW |
| Output current (lo) | 8 mA |
| Peak output current (lop) | 16 mA |
| Supply voltage (Vcc) | -0.5 V to 15 V |
| Operating temperature range | -55 °C to 100 °C |
| Weight (typ.) | 0.54 g |
The device provides a minimum isolation voltage of 2500 Vrms.
Yes, the TLP550 is TTL compatible.
The forward current (IF) is limited to 25 mA, pulse forward current (IFp) to 50 mA, and peak transient forward current (IFPT) to 1 A.
It can operate from –55 °C up to 100 °C.