TCA6408 状态: ACTIVE

具有中断输出、复位和配置寄存器的低压 8 位 I2C 和 SMBus I/O 扩展器

      
         
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 TCA6408
Interrupt OutputYes  
Reset InputYes  
RatingCatalog  
fSCLK(Max)(MHz)400  
Pin/Package16QFN, 16TSSOP, 20BGA MICROSTAR JUNIOR  
Operating Temp Range(Celsius)-40 to 85  
Max Frequency(kHz)400  
I2C Address0100 00x  
# of I/Os8  
Vcc range(V)1.65 to 5.5  
Low PowerYes  
Configuration RegistersYes  
5V Tolerant I/OYes  
Push–Pull I/O TypeYes  
 样片
 库存

产品信息

特性

  • Operating Power-Supply Voltage Range of 1.65 V to 5.5 V
  • Allows Bidirectional Voltage-Level Translation and GPIO Expansion Between
    • 1.8-V SCL/SDA and 1.8-V, 2.5-V, 3.3-V, or 5-V P Port
    • 2.5-V SCL/SDA and 1.8-V, 2.5-V, 3.3-V, or 5-V P Port
    • 3.3-V SCL/SDA and 1.8-V, 2.5-V, 3.3-V, or 5-V P Port
    • 5-V SCL/SDA and 1.8-V, 2.5-V, 3.3-V, or 5-V P Port
  • I2C to Parallel Port Expander
  • Low Standby Current Consumption of 1 µA
  • Schmitt-Trigger Action Allows Slow Input Transition and Better Switching Noise Immunity at the SCL and SDA Inputs
    • Vhys = 0.18 V Typ at 1.8 V
    • Vhys = 0.25 V Typ at 2.5 V
    • Vhys = 0.33 V Typ at 3.3 V
    • Vhys = 0.5 V Typ at 5 V
  • 5-V Tolerant I/O Ports
  • Active-Low Reset Input (RESET)
  • Open-Drain Active-Low Interrupt Output (INT)
  • 400-kHz Fast I2C Bus
  • Input/Output Configuration Register
  • Polarity Inversion Register
  • Internal Power-On Reset
  • Power-Up With All Channels Configured as Inputs
  • No Glitch On Power-Up
  • Noise Filter on SCL/SDA Inputs
  • Latched Outputs With High-Current Drive Maximum Capability for Directly Driving LEDs
  • 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)

DESCRIPTION/ORDERING INFORMATION

This 8-bit I/O expander for the two-line bidirectional bus (I2C) is designed to provide general-purpose remote I/O expansion for most microcontroller families via the I2C interface [serial clock (SCL) and serial data (SDA)].

The major benefit of this device is its wide VCC range. It can operate from 1.65-V to 5.5-V on the P port side and on the SDA/SCL side. This allows the TCA6408 to interface with next-generation microprocessors and microcontrollers on the SDA/SCL side, where supply levels are dropping down to conserve power. In contrast to the dropping power supplies of microprocessors and microcontrollers, some PCB components such as LEDs remain at a 5-V power supply.

The bidirectional voltage level translation in the TCA6408 is provided through VCCI. VCCI should be connected to the VCC of the external SCL/SDA lines. This indicates the VCC level of the I2C bus to the TCA6408. The voltage level on the P port of the TCA6408 is determined by VCCP.

The TCA6408 consists of one 8-bit configuration (input or output selection), input, output, and polarity inversion (active high) register. At power on, the I/Os are configured as inputs. However, the system master can enable the I/Os as either inputs or outputs by writing to the I/O configuration bits. The data for each input or output is kept in the corresponding input or output register. The polarity of the input port register can be inverted with the polarity inversion register. All registers can be read by the system master.

The system master can reset the TCA6408 in the event of a timeout or other improper operation by asserting a low in the RESET input. The power-on reset puts the registers in their default state and initializes the I2C/SMBus state machine. The RESET pin causes the same reset/initialization to occur without depowering the part.

The TCA6408 open-drain interrupt (INT) output is activated when any input state differs from its corresponding input port register state and is used to indicate to the system master that an input state has changed.

INT can be connected to the interrupt input of a microcontroller. By sending an interrupt signal on this line, the remote I/O can inform the microcontroller if there is incoming data on its ports without having to communicate via the I2C bus. Thus, the TCA6408 can remain a simple slave device.

The device P port outputs have high-current sink capabilities for directly driving LEDs while consuming low device current.

One hardware pin (ADDR) can be used to program and vary the fixed I2C address and allow up to two devices to share the same I2C bus or SMBus.

    

定价/封装/CAD 设计工具/样片

价格(美元)封装CAD 设计工具样片
器件状态温度 (oC)价格(美元) | Quantity封装 | 引脚顶端标记封装数量 | 封装载体尺寸样片
TCA6408PWACTIVE-40 to 851.40 | 1kuTSSOP (PW) | 16 查看 90 | TUBE 下载此尺寸的 CAD 格式采购样片
TCA6408PWG4ACTIVE-40 to 851.40 | 1kuTSSOP (PW) | 16 查看 90 | TUBE 下载此尺寸的 CAD 格式采购样片
TCA6408PWRACTIVE-40 to 851.30 | 1kuTSSOP (PW) | 16 查看 2000 | LARGE T&R 下载此尺寸的 CAD 格式采购样片
TCA6408PWRG4ACTIVE-40 to 851.30 | 1kuTSSOP (PW) | 16 查看 2000 | LARGE T&R 下载此尺寸的 CAD 格式采购样片
TCA6408RGTRACTIVE-40 to 851.40 | 1kuQFN (RGT) | 16 查看 3000 | LARGE T&R 请与TI分销商或销售办事处联系申请样片
TCA6408RGTRG4ACTIVE-40 to 851.40 | 1kuQFN (RGT) | 16 查看 3000 | LARGE T&R 
TCA6408ZXYRACTIVE-40 to 851.40 | 1kuBGA MICROSTAR JUNIOR (ZXY) | 20  2500 | LARGE T&R 

建议零售价格仅用于预算,以美元为单位,并且价格是浮动的。 若要查询有关批量价格、本地货币价格或交付报价的信息,请与当地德州仪器 (TI) 销售办事处或授权经销商联系。

库存

  TI 库存状态 已报告的分销商库存
TCA6408PW截至 10:07 PM GMT, 2009年 7月 2日截至 10:07 PM GMT, 2009年 7月 2日
 交货周期地区公司库存采购
 13 Weeks 中国WPI 102
TCA6408PWG4截至 10:07 PM GMT, 2009年 7月 2日截至 10:07 PM GMT, 2009年 7月 2日
 交货周期地区公司库存采购
 13 Weeks无报告
查看经销商
   
TCA6408PWR截至 10:07 PM GMT, 2009年 7月 2日截至 10:07 PM GMT, 2009年 7月 2日
 交货周期地区公司库存采购
 4 Weeks 中国WPI >1k
TCA6408PWRG4截至 10:07 PM GMT, 2009年 7月 2日截至 10:07 PM GMT, 2009年 7月 2日
 交货周期地区公司库存采购
 4 Weeks无报告
查看经销商
   
TCA6408RGTR截至 10:07 PM GMT, 2009年 7月 2日截至 10:07 PM GMT, 2009年 7月 2日
 交货周期地区公司库存采购
 15 Weeks 中国WPI >1k
TCA6408RGTRG4截至 10:07 PM GMT, 2009年 7月 2日截至 10:07 PM GMT, 2009年 7月 2日
 交货周期地区公司库存采购
 15 Weeks无报告
查看经销商
   
TCA6408ZXYR截至 10:07 PM GMT, 2009年 7月 2日截至 10:07 PM GMT, 2009年 7月 2日
 交货周期地区公司库存采购
 4 Weeks 中国WPI >1k

查看中国经销商

**目前尚无法提供交货时间信息。 但是,由于我们的信息每天都会更新,如有疑问,请马上与我们联系。 有关附加信息,请与首选的 TI 授权分销商 联系。

质量与无铅数据

 产品目录DPPM / MTBF / FIT 率
器件环保计划* 铅/焊球涂层MSL 等级/回流焊峰详细信息详细信息
TCA6408PW 符合 RoHS Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM查看查看
TCA6408PWG4 符合 RoHS Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM查看查看
TCA6408PWR 符合 RoHS Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM查看查看
TCA6408PWRG4 符合 RoHS Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM查看查看
TCA6408RGTR 符合 RoHS Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR查看查看
TCA6408RGTRG4 符合 RoHS Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR查看查看
TCA6408ZXYR 符合 RoHS Green (RoHS & no Sb/Br) SNAGCU Level-1-260C-UNLIM查看查看

* 计划的环保分级:无铅 (RoHS)、无铅(RoHS 豁免)或绿色环保(RoHS 和无 Sb/Br)- 请单击上表中产品目录明细的“查看”链接,以获得最新供货信息和附加产品目录明细。

如果此时没有在线提供您所请求的信息,则请联系 我们的产品信息中心, 以了解关于此信息可用性的信息。

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