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| Part Number | SI4455-C2A-GMR | SI4455-C2A-GM | SI4455-B1A-FMR | SI4455-B1A-FM | SI4455-C2A-ZM1R |
| Manufacturer | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs |
| Series | - | - | - | - | * |
| Package/Case | 20-VFQFN Exposed Pad | 20-VFQFN Exposed Pad | 20-VFQFN Exposed Pad | 20-VFQFN Exposed Pad | - |
| Packaging | Tape & Reel (TR) | Tray | Tape & Reel (TR) | Tray | Tape & Reel (TR) |
| Product Status | Active | Active | Not For New Designs | Not For New Designs | Active |
| Programmable | Not Verified | Not Verified | Not Verified | Not Verified | Not Verified |
| Type | TxRx Only | TxRx Only | TxRx Only | TxRx Only | - |
| RF Family/Standard | General ISM < 1GHz | General ISM < 1GHz | General ISM < 1GHz | General ISM < 1GHz | - |
| Protocol | - | - | - | - | - |
| Modulation | FSK, GFSK, OOK | FSK, GFSK, OOK | FSK, GFSK, OOK | FSK, GFSK, OOK | - |
| Frequency | 284MHz ~ 960MHz | 284MHz ~ 960MHz | 283MHz ~ 960MHz | 283MHz ~ 960MHz | - |
| Data Rate (Max) | 500kbps | 500kbps | 500kbps | 500kbps | - |
| Power - Output | 13dBm | 13dBm (Max) | 13dBm (Max) | 13dBm (Max) | - |
| Sensitivity | -115dBm | -115dBm | -116dBm | -116dBm | - |
| Memory Size | - | - | - | - | - |
| Serial Interfaces | SPI | SPI | SPI | SPI | - |
| GPIO | 4 | 4 | 4 | 4 | - |
| Voltage - Supply | 1.8V ~ 3.6V | 1.8V ~ 3.6V | 1.8V ~ 3.6V | 1.8V ~ 3.6V | - |
| Current - Receiving | 10.9mA | 10.9mA | 10mA | 10mA | - |
| Current - Transmitting | 19mA ~ 24mA | 19mA ~ 24mA | 18mA ~ 30mA | 18mA ~ 30mA | - |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | - |
| Grade | - | - | - | - | - |
| Qualification | - | - | - | - | - |
| Supplier Device Package | 20-QFN (3x3) | 20-QFN (3x3) | 20-QFN (3x3) | 20-QFN (3x3) | - |
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