The Lite-On 6N138/6N139 series are high gain, single-channel, high-speed optocouplers designed for digital logic ground isolation, low input current line receivers, and other communication applications. They utilize a light emitter diode and an integrated high gain photodetector to achieve an extremely high current transfer ratio. Features include TTL compatible output, high common mode rejection, and low input current requirements.
| Part Number | Description | Typical CTR (%) | Min. CMR dV/dt (V/s) | Min. CMR VCM (V) | Input Forward Voltage (V) | Output Current (mA) | Propagation Delay tPHL (s) | Propagation Delay tPLH (s) |
| 6N138 | Single Channel, DIP-8 | 2000 | 400 | 1,000 | 1.1 - 1.7 | 60 | 1.6 - 10 | 10 - 35 |
| 6N138M | Single Channel, Wide Lead Spacing DIP-8 | 2000 | 400 | 1,000 | 1.1 - 1.7 | 60 | 1.6 - 10 | 10 - 35 |
| 6N138S | Single Channel, SMD-8 | 2000 | 400 | 1,000 | 1.1 - 1.7 | 60 | 1.6 - 10 | 10 - 35 |
| 6N139 | Single Channel, DIP-8 | 2000 | 300 | 1,000 | 1.1 - 1.7 | 60 | 0.1 - 1 | 2 - 7 |
| 6N139M | Single Channel, Wide Lead Spacing DIP-8 | 2000 | 300 | 1,000 | 1.1 - 1.7 | 60 | 0.1 - 1 | 2 - 7 |
| 6N139S | Single Channel, SMD-8 | 2000 | 300 | 1,000 | 1.1 - 1.7 | 60 | 0.1 - 1 | 2 - 7 |