| Manufacturer | Part Number | Description |
|---|---|---|
Atmel (now Microchip Technology)
| U3761MB-T | Universal Telephone IC |
| U3761MB-AFNG3 | Low Voltage Standard Telephone Circuit | |
| U3761MB | Low Voltage Standard Telephone Circuit | |
| U3761MB-AFN | Low Voltage Standard Telephone Circuit | |
| U3761MB-ASD | Low Voltage Standard Telephone Circuit |