| PartNumber | LE9551CMQC | LE9551DMQC | LE9551CMQCT |
| Description | Telecom Interface ICs 1CH, UNIC SLIC, 100V | Telecom Interface ICs 1CH, UNIV SLIC, 145V | Telecom Interface ICs 1CH, UNIC SLIC, 100V |
| Manufacturer | Microchip | Microchip | Microchip |
| Product Category | Telecom Interface ICs | Telecom Interface ICs | Telecom Interface ICs |
| RoHS | Y | Y | Y |
| Product | SLIC - Subscriber Line Interface Circuits | SLIC - Subscriber Line Interface Circuits | SLIC - Subscriber Line Interface Circuits |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | QFN-28 | QFN-28 | QFN-28 |
| Packaging | Tray | Tray | Reel |
| Type | Ringing SLIC | Ringing SLIC | Ringing SLIC |
| Brand | Microchip / Microsemi | Microchip / Microsemi | Microchip / Microsemi |
| Interface Type | Serial | Serial | Serial |
| Number of Channels | 1 Channel | 1 Channel | 1 Channel |
| Operating Supply Voltage | 3.3 V | 3.3 V | 3.3 V |
| Product Type | Telecom Interface ICs | Telecom Interface ICs | Telecom Interface ICs |
| Factory Pack Quantity | 2450 | 2450 | 3000 |
| Subcategory | Interface ICs | Interface ICs | Interface ICs |