如果在I2C总线上使用不同电压的器件，那么可以使用中继器、多路复用器和开关等进行电平转换，如果您不想用那些器件，可以使用NXP提供的专用I2C电平转换器件。这些芯片还可用作通用的电平转换。
NTS系列是带自动方向感应的双电源转换收发器，可使能双向电压电平转换，同时具有开漏，内置上拉电阻，高Sink电流能力。
GTL系列是GTL-/GTL/GTL+采样接收器或用作LVTTL至GTL-/GTL/GTL+驱动器，具有自动感应控制和双电源供应。
NVT系列是在开漏或推挽应用中进行1.0 V和5 V之间的双向电压带自动感应变换而无需方向引脚，但需要外部上拉。
NTB系列带自动方向感应的双电源转换收发器，可使能双向电压电平转换，该器件完全适合使用IOFF的局部掉电应用。IOFF电路可禁用输出，防止断电时破坏性回流电流通过该器件。
Bi-directional VLT with Diretional Pin
| Products | Function | Voltage Translation Range (V) | TTL Drive (mA) | GTL Drive (mA) | Application | Package Options |
|---|---|---|---|---|---|---|
| GTL2012DP | 2 bit Bi-Directional Non-Latched | 1.14 to 1.65 ~ 3.0 to 5.5 | 16 | 40 | Processor Interface | TSSOP |
| GTL2014PW | 4 bitBi-Directional Non-Latched | 1.14 to 1.65 ~ 3.0 to 5.5 | 16 | 40 | Processor Interface | TSSOP |
| GTL2018PW | 8 bitBi-Directional Non-Latched | 1.14 to 1.65 ~ 3.0 to 5.5 | 16 | 40 | Processor Interface | TSSOP |
Bi-directional VLT without Diretional Pin
| Products | Number of bits | VCCA (min) | VCCB (min) | RON (typ) Ω | Data Rate (typ) Mbs | One Shot | Buffer | Function | Package Options |
|---|---|---|---|---|---|---|---|---|---|
| NVT2002 | 2 | 1 | 1.8 | 3.5 | — | No | No | Open Drain Output | TSSOP8, XSON8U |
| NVT2008 | 8 | 1 | 1.8 | 3.5 | — | No | No | Open Drain Output | TSSOP20, DHVQFN20 |
| NTB0102 | 2 | 1.2 to 3.6 | 1.65 to 5.5 | — | 100 | No | Yes | Weak output, overdrive input | TSSOP8, XSON8, XQFN10 |
| NTB0104 | 4 | 1.2 to 3.6 | 1.65 to 5.5 | — | 100 | No | Yes | Weak output, overdrive input, OE active high | DHVQFN14, XQFN12, WLCSP12 |
| NTS0102 | 2 | 1.65 to 3.3 | 2.3 to 5.5 | — | 50 | Yes | No | Open Drain Output with rise time accelerator | TSSOP8, XSON8,XSON8U, XQFN10,XQFN8 |
| NTS0104 | 4 | 1.65 to 3.3 | 2.3 to 5.5 | — | 50 | Yes | No | Open Drain Output with rise time accelerator | TSSOP14, DHVQFN14, XQFN12, WLCSP12 |
VLT by Application
| products | Description | Host CPU I/O Voltage | SIM power supply | ESD protection | Package |
|---|---|---|---|---|---|
| NVT4555 | SIM card voltage level translator with LDO | 1.1V to 3.6V | 1.8V, 2.95V | 8kV | CSP |
| NVT4556 (A and B) | SIM card voltage level translator with I2C-bus control andLDO | 1.55V to 3.6V | 1.8V, 3.0V | 8kV | CSP |
| NVT4857 | SD 3.0-SDR104 compliant, auto-direction control memory card voltage leveltranslator | 1.2V to 1.8V | 1.7V to 1.95V | 8kV | CSP |
