Mining Helmet App Prototype
Thought for 1 min 22 sec
Here are the top 2 SOT-23 bi-directional level shifters suitable for 3.3 V UART TX/RX:
Table
| Part | Description | Key Specs | Datasheet |
|---|---|---|---|
| SN74LVC1T45DBVT | 1-channel, 420 Mbps bidirectional translator | SOT-23-6, VCCA 1.2–3.6 V, VCCB 1.65–5.5 V | |
| TXS0101DBVR | 1-channel, 24 Mbps bidirectional translator | SOT-23-6, VCCA 1.2–3.6 V, VCCB 1.65–5.5 V |
Recommendation:
- SN74LVC1T45DBVT
- Very high-speed (420 Mbps) so it easily handles UART baud rates up to several Mbps.
- Wide VCCA range down to 1.2 V if you reuse it in other parts of the system.
- TXS0101DBVR
- Lower max data rate (24 Mbps) but still adequate for typical UART (<1 Mbps).
- Slightly higher unit cost but broadly available.
Choose SN74LVC1T45DBVT for headroom if you ever bump UART speeds above 1 Mbps. Let me know which one to add to your sensor-board schematic (pins 5/6 → TX/RX).
Choose SN74LVC1T45
Choose TXS0101DBVR
Add decoupling cap
Confirm pin mapping
