Optical-Coupler-DAT
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CPC5902G == Logic Output Optocouplers Dual Opto Isolated I2C Bus Repeater
PC817 vs EL357
| Specification | EL357 | PC817 |
|---|---|---|
| Manufacturer | Everlight Electronics | Sharp / Renesas / Lite-On / etc. |
| Type | Phototransistor Optocoupler | Phototransistor Optocoupler |
| CTR (Current Transfer Ratio) | 50% to 600% (varies by model) | 50% to 600% (varies by model) |
| Input LED Forward Voltage (VF) | 1.2V typ., 1.4V max | 1.2V typ., 1.4V max |
| LED Forward Current (IF) | 50 mA max | 50 mA max |
| Output Collector-Emitter Voltage (Vce) | 80V max | 80V max |
| Output Collector Current (Ic) | 50 mA max | 50 mA max |
| Isolation Voltage | 3750 Vrms | 5000 Vrms |
| Response Time (tr/tf) | 4 µs / 3 µs typ. | 4 µs / 3 µs typ. |
| Operating Temperature | -55°C to +110°C | -30°C to +100°C |
| Package | DIP-4, SOP-4 | DIP-4, SOP-4 |
| RoHS Compliant | Yes | Yes |
Both are widely used in similar applications (signal isolation, microcontroller interfaces).
The PC817 offers higher isolation voltage, making it more suitable for high-voltage isolation.
The EL357 has a wider operating temperature range, which may be beneficial in harsh environments.
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CPC5902G == Logic Output Optocouplers Dual Opto Isolated I2C Bus Repeater
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