• - 交流-直流(AC-DC)控制器和稳压器
• - 直流-直流(DC-DC)控制器、转换器和稳压器
• - 电压和电流管理
• - 通讯IC
• - 驱动器
• - 热管理

• - 时钟及数据分配
• - 标准逻辑

• - 放大器和比较器
• - 模拟开关
• - 数字电位计
• - 接口
• - EMI和RFI滤波器

• - EEPROM存储器
• - 非易失性只读存储器(NVRAM)
• - SRAM存储器

说明

This dual bidirectional I²C and SMBus voltage-level translator, with an enable (EN) input, is operational from 1.2-V to 3.3-V V_REF1 and 1.8-V to 5.5-V V_REF2.

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 (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 I²C applications, the bus capacitance limit of 400 pF restricts the number of devices and bus length.

特性

• 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 Translator Between
  • 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 3.5- 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)