PCA9306是TI公司的一款I2C特殊功能产品，PCA9306是2 位双向 I2C 总线和 SMBus 电压电平转换器，本页介绍了PCA9306的产品说明、应用、特性等，并给出了与PCA9306相关的TI元器件型号供参考。
PCA9306 - 2 位双向 I2C 总线和 SMBus 电压电平转换器 - I2C特殊功能 - I2C - TI公司（Texas Instruments，德州仪器）
- 2-Bit Bidirectional Translator for SDA and SCL Lines in Mixed-Mode I2C Applications
- I2C and SMBus Compatible
- Less Than 1.5-ns Maximum Propagation Delay to Accommodate Standard-Mode and Fast-Mode I2C Devices and Multiple Masters
- Allows Voltage-Level Translation Between
- 1.2-V VREF1 and 1.8-V, 2.5-V, 3.3-V, or 5-V VREF2
- 1.8-V VREF1 and 2.5-V, 3.3-V, or 5-V VREF2
- 2.5-V VREF1 and 3.3-V or 5-V VREF2
- 3.3-V VREF1 and 5-V VREF2
- Provides Bidirectional Voltage Translation With No Direction Pin
- Low 3.5-Ω ON-State Connection Between Input and Output Ports Provides Less Signal Distortion
- Open-Drain I2C I/O Ports (SCL1, SDA1, SCL2, and SDA2)
- 5-V Tolerant I2C I/O Ports to Support Mixed-Mode Signal Operation
- High-Impedance SCL1, SDA1, SCL2, and SDA2 Pins for EN = Low
- Lock-Up-Free Operation for Isolation When EN=Low
- Flow-Through Pinout for Ease of Printed Circuit Board Trace Routing
- Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
- ESD Protection Exceeds JESD 22
- 2000-V Human-Body Model (A114-A)
- 200-V Machine Model (A115-A)
- 1000-V Charged-Device Model (C101)
- I2C, SMBus, PMBus, MDIO, UART, Low-Speed SDIO, GPIO, and Other Two-Signal Interfaces
- Servers
- Routers (Telecom Switching Equipment)
- Personal Computers
- Industrial Automation
The PCA9306 is a dual bidirectional I2C and SMBus voltage-level translator, with an enable (EN) input, is operational from 1.2-V to 3.3-V VREF1 and 1.8-V to 5.5-V VREF2.
The PCA9306 allows bidirectional voltage translations between 1.2 V and 5 V, without the use of a direction pin. The low ON-state resistance (RON) 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 PCA9306 can be used to isolate a 400-kHz bus from a 100-kHz by controlling the EN pin.
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
|---|---|---|
| PCA9306 | SSOP (8) | 2.95 mm x 2.80 mm |
| VSSOP (8) | 2.30 mm x 2.30 mm | |
| X2SON (8) | 1.40 mm x 1.00 mm | |
| DSBGA (8) | 1.90 mm x 0.90 mm |
