TLP550 is a photocoupler from Toshiba. It has a 2500Vrms isolation voltage and a switching speed of 0.5μs, making it suitable for noisy environments.
The TLP550 is an infrared LED and photodiode optocoupler packaged in an 8‑lead DIP. It offers a minimum isolation voltage of 2500 Vrms, TTL‑compatible logic levels, and a typical switching speed of 0.5 µs. The device is designed for noisy environments and includes detailed pin assignments.
The datasheet lists absolute maximum ratings, electrical characteristics such as forward voltage (typ. 1.65 V at 16 mA), output current limits (8 mA low‑level, 16 mA peak), supply voltage range (‑0.5 V to 15 V), and operating temperature range (‑55 °C to 100 °C). It also contains reliability notes, handling precautions, and restrictions on product use.
| Isolation voltage | 2500 Vrms (min.) |
|---|---|
| Switching speed (typ.) | 0.5 µs |
| Forward voltage (typ.) | 1.65 V at IF=16 mA |
| Low‑level output current | 8 mA |
| Peak output current | 16 mA |
| Supply voltage range | -0.5 V to 15 V |
| Operating temperature range | -55 °C to 100 °C |
| Weight (typ.) | 0.54 g |
The device is rated for a minimum isolation voltage of 2500 Vrms.
Typical propagation delay times are 0.5 µs for both high‑to‑low and low‑to‑high transitions.
The TLP550 can operate from –55 °C up to 100 °C.
The absolute maximum forward current is 25 mA, with a typical forward current of 16 mA used for specifications.