Key facts
- Brand
- Toshiba
- Model
- TLP550
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-04-01
Start here

Toshiba TLP550 Photocoupler Datasheet
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.
Toshiba TLP550 specifications
| 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 |
All Toshiba TLP550 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the isolation voltage rating of the TLP550?
The device is rated for a minimum isolation voltage of 2500 Vrms.
What is the typical switching speed of the TLP550?
Typical propagation delay times are 0.5 µs for both high‑to‑low and low‑to‑high transitions.
What is the isolation voltage rating of the TLP550?
The device provides a minimum isolation voltage of 2500 Vrms.
Is the TLP550 TTL compatible?
Yes, the TLP550 is TTL compatible.
