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| Part Number | PM4351-RGI | PM4351-NGI | PM4351-NI | PM4351-RI |
| Manufacturer | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Series | - | - | - | - |
| Package/Case | 80-QFP | 81-LFBGA | 81-LFBGA | 80-QFP |
| Packaging | Tray | Tray | Tray | Tray |
| Product Status | Active | Obsolete | Obsolete | Obsolete |
| Function | Transceiver | Transceiver | Transceiver | Transceiver |
| Interface | E1, J1, T1 | E1, J1, T1 | E1, J1, T1 | E1, J1, T1 |
| Number of Circuits | - | - | - | - |
| Voltage - Supply | 3.3V | 3.3V | 3.3V | 3.3V |
| Current - Supply | - | - | - | - |
| Power (Watts) | - | - | - | - |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C |
| Grade | - | - | - | - |
| Qualification | - | - | - | - |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Supplier Device Package | 80-MQFP (14x14) | 81-CABGA (9x9) | 81-CABGA (9x9) | 80-MQFP (14x14) |
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