Product Overview
TLP291-4 from Toshiba is a quad phototransistor photocoupler with 3750Vrms isolation. CTR 50-300%. SOP-16 package. 4 channels for multi-signal isolation.
Working Principle
Four independent photocoupler channels. Each: GaAs LED coupled to NPN phototransistor. CTR 50-300% at 5mA IF. 3750Vrms isolation. SOP-16 for space-efficient 4-channel isolation.
Pin Description
| Pin Group | Name | Function |
|---|---|---|
| LEDs | Anode1-4/Cathode1-4 | LED inputs |
| Outputs | Collector1-4/Emitter1-4 | Phototransistor outputs |
Applications
- Industrial I/O isolation
- Multi-channel signal isolation
- PLC digital I/O
Alternative Models
| Manufacturer | Part Number | Notes |
|---|---|---|
| Toshiba | TLP291-2 | Dual version |