TCA39306
- 2-Bit bidirectional translator for SDA and SCL lines in mixed-mode I 2C applications
- Standard-mode, fast-mode, and fast-mode plus I 2C and SMBus compatible
- I 3C compatible (12.5 MHz supported)
- Allows voltage-level translation between
- 0.9-V V REF1 and 1.8-V, 2.5-V, 3.3-V, or 5-V V REF2
- 1.2-V V REF1 and 1.8-V, 2.5-V, 3.3-V, or 5-V V REF2
- 1.8-V V REF1 and 2.5-V, 3.3-V, or 5-V V REF2
- 2.5-V V REF1 and 3.3-V or 5-V V REF2
- 3.3-V V REF1 and 5-V V REF2
- Provides bidirectional voltage translation with no direction Pin
- Low ON-state resistance between input and output ports provides less signal distortion
- Open-drain I 2C I/O ports (SCL1, SDA1, SCL2, and SDA2)
- 5-V Tolerant I 2C I/O ports to support mixed-mode signal operation
- High-impedance SCL1, SDA1, SCL2, and SDA2 pins for EN = Low
- Lockup-free operation for isolation when EN = Low
- Flow-through pinout for ease of printed-circuit-board trace routing
- ESD Protection Exceeds JESD 22
- 2000-V human-body model (A114-A)
- 1000-V charged-device model (C101)
The TCA39306 is a dual bidirectional voltage-level translator compatible with I 2C, SMBus, and I 3C with an enable (EN) input, and is operational from 0.9-V to 3.3-V V REF1 and 1.8-V to 5.5-V V REF2.
The device allows bidirectional voltage translations between 0.85 V and 5 V, without the use of a direction pin. The low ON-state resistance (R ON) of the switch allows connections to be made with minimal propagation delay. When EN is high, the translator switch is ON, and the SCL1 and SDA1 I/O are connected to the SCL2 and SDA2 I/O, respectively, allowing bidirectional data flow between ports. When EN is low, the translator switch is off, and a high-impedance state exists between ports.
In addition to voltage translation, the TCA39306 can be used to isolate a higher speed bus from a lower speed bus by controlling the EN pin to disconnect the slower bus during fast-mode communication.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | TCA39306 Dual Bidirectional I2C Bus and SMBus Voltage-Level Translator datasheet (Rev. B) | PDF | HTML | 2023年 3月 28日 |
| Application note | PassFET Hang Time with TCA39306 I2C, I3C Level Translator | PDF | HTML | 2024年 9月 23日 | |
| Application note | Understanding Transient Drive Strength vs. DC Drive Strength in Level-Shifters (Rev. A) | PDF | HTML | 2024年 7月 3日 | |
| Application brief | I3C Voltage Translator and Multiplexer Quick Reference | PDF | HTML | 2024年 1月 4日 | |
| Application brief | Best Practices: I2C Devices on an I3C Shared Bus | PDF | HTML | 2023年 3月 30日 | |
| Application brief | I3C - Next Generation Serial Communication Interface | PDF | HTML | 2022年 2月 24日 | |
| EVM User's guide | TCA39306 EVM User's Guide | PDF | HTML | 2021年 5月 11日 |
設計與開發
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TCA39306EVM — TCA39306 評估模組低電壓 I²C 電平移位器
此 EVM 透過可調整上拉電阻器和匯流排電容器提供可配置的負載條件，讓設計人員能在其系統中輕鬆測試此裝置的性能。
I2C-DESIGNER — I2C 設計工具
PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
TINA-TI — 基於 SPICE 的類比模擬程式
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| SOT-23-THN (DDF) | 8 | Ultra Librarian |
| VSSOP (DCU) | 8 | Ultra Librarian |
| X2SON (DTM) | 8 | Ultra Librarian |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。