• - 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

The TCA9406 is a dual bidirectional I²C-Bus and SMBus Voltage-Level translator with enable (OE) Input. It is operational from 1.65 V to 3.6 V on A-Port and 2.3 V to 5.5 V on B-port. Enable (OE) input is referenced to V_CCA with a maximum input voltage tolerance of 4.6 V.

The TCA9406 can operate up to 24Mbps in push pull mode and 2Mbps with open drain mod. Its compatible with a standard I²C bus 100 kHz, 400 kHz and 1 MHz at both sides of A-Port and B-Port.

With the standard I²C bus system, it needs pull-up resistors to provide logic HIGH levels on the translator bus. The TCA9406 is an open-drain bus level configuration of the I²C-bus. The value of pullup resistors depends on the system, but each side of the translator must have pull-up resistors and TCA9406 already has 10 k pullup resistors on each side and it allows to add additional external pull-up resistors.

特性

• 2-Bit Bidirectional Translator for SDA and SCL Lines in
  Mixed-Mode I²C Applications
• Lock-Up Free for Bus Isolation when OE Control Pin referring
  to V_CCA with 5-V Input Tolerant
• Level Translation Range
  • 1.8 V to 2.5 V/3.3 V/5 V
  • 2.5 V to 2.5 V/3.3 V/5 V
  • 3.3 V to 3.3 V/5 V
• Internal10-k Pullup Resistor on Each Port and Option to Add
  External Pullup Resistor if Required
• Provides Bidirectional Voltage Translation With No Direction Pin
• I_off Support Partial Power Down (V_CC= 0 V) With 2 mA
• High-Impedance Output SCL1, SDA1, SCL2, and SDA2 Pins
  When OE = Low or V_CC= 0 V
• Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
• ESD Protection Exceeds JESD 22
  • A Port
    • 2500-V Human-Body Model (A114-B)
    • 250-V Machine Model (A115-A)
    • 1500-V Charged-Device Model (C101)
  • B Port
    • 8-kV Human-Body Model (A114-B)
    • 250-V Machine Model (A115-A)
    • 1500-V Charged-Device Model (C101)