| Serial Interfaces | SPI | |
| Product Status | Not For New Designs | |
| Power - Output | 7dbm | |
| Supplier Device Package | 16-TSSOP | |
| Package / Case | 16-TSSOP (0.173", 4.40mm Width) | |
| Current - Receiving | 11mA ~ 13mA | |
| Modulation | FSK | |
| Voltage - Supply | 2.2V ~ 3.8V | |
| REACH Status | REACH Unaffected | |
| Mfr | Silicon Labs | |
| Data Rate (Max) | 256kbps | |
| Protocol | - | |
| RoHS Status | ROHS3 Compliant | |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) | |
| Operating Temperature | -40°C ~ 85°C | |
| Current - Transmitting | 15mA ~ 24mA | |
| ECCN | 5A991B | |
| Mounting Type | Surface Mount | |
| RF Family/Standard | General ISM < 1GHz | |
| Series | - | |
| Type | TxRx Only | |
| Sensitivity | -110dBm | |
| Memory Size | - | |
| Frequency | 315MHz, 434MHz, 868MHz, 915MHz | |
| HTSUS | 8542.39.0001 | |
| Package | Tube | |
| Base Product Number | SI4421 |
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