| Part Number | SI4464-B1B-FM | SI4464-B1B-FMR | 
|---|---|---|
| Manufacturer | Silicon Labs | Silicon Labs | 
| Category | RF Transceiver ICs | RF Transceiver ICs | 
|   |   | |
| Product Status | Not For New Designs | Not For New Designs | 
| Type | TxRx Only | TxRx Only | 
| RF Family/Standard | General ISM < 1GHz | General ISM < 1GHz | 
| Protocol | - | - | 
| Modulation | 4GFSK, GFSK, GMSK, OOK | 4GFSK, GFSK, GMSK, OOK | 
| Frequency | 119MHz ~ 1.05GHz | 119MHz ~ 1.05GHz | 
| Data Rate (Max) | 1Mbps | 1Mbps | 
| Power - Output | 20dBm (Max) | 20dBm (Max) | 
| Sensitivity | -126dBm | -126dBm | 
| Memory Size | - | - | 
| Serial Interfaces | SPI | SPI | 
| GPIO | 4 | 4 | 
| Voltage - Supply | 1.8V ~ 3.6V | 1.8V ~ 3.6V | 
| Current - Receiving | 10.7mA ~ 13.7mA | 10.7mA ~ 13.7mA | 
| Current - Transmitting | 70mA ~ 85mA | 70mA ~ 85mA | 
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | 
| Mounting Type | Surface Mount | Surface Mount | 
| Package / Case | 20-VFQFN Exposed Pad | 20-VFQFN Exposed Pad | 
| Supplier Device Package | 20-QFN (4x4) | 20-QFN (4x4) |