| Manufacturer | Part Number | Description |
|---|---|---|
Sipex
| SP3239E | Intelligent +3.0V to +5.5V RS-232 Transceivers |
Exar (now MaxLinear)
| SP3239E | Intelligent +3.0V to +5.5V RS-232 Transceiver |
MaxLinear
| SP3239E | Intelligent +3.0V to +5.5V RS-232 Transceiver |
