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TCA6424A 低压 24 位 I2C 和 SMBus I/O 扩展器

This 24-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 TCA6424A 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 TCA6424A is provided through VCCI

TCA6424A
No. of Outputs 24
Interrupt Output Yes
Reset Input Yes
VCC(Min)(V) 1.65
VCC(Max)(V) 5.5
Pin/Package 32UQFN
Operating Temperature Range(°C) -40 to 85
Max Frequency(kHz) 400
I2C Address 0100 01x
# of I/Os 24
Vcc range(V) 1.65 - 5.5
Low Power Yes
Configuration Registers Yes
5V Tolerant I/O Yes
Push–Pull I/O Type Yes
TCA6424A 特性
TCA6424A 芯片订购指南
器件 状态 温度 价格 封装 | 引脚 封装数量 | 封装载体 丝印标记
TCA6424ARGJR ACTIVE -40 to 85 0.95 | 1ku UQFN (RGJ) | 32 3000 | LARGE T&R  
TCA6424A 质量与无铅数据
器件 环保计划* 铅/焊球涂层 MSL 等级/回流焊峰 环保信息与无铅 (Pb-free) DPPM / MTBF / FIT 率
TCA6424ARGJR Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM TCA6424ARGJR TCA6424ARGJR
TCA6424A 应用技术支持与电子电路设计开发资源下载
  1. TCA6424A 数据资料 dataSheet 下载.PDF
  2. TI 德州仪器I2C 逻辑器件产品选型与价格 . xls
  3. Logic Guide 2009 (PDF 4263 KB)
  4. Shelf-Life Evaluation of Lead-Free Component Finishes (PDF 1305 KB)
  5. Understanding and Interpreting Standard-Logic Data Sheets (PDF 857 KB)
  6. TI IBIS File Creation, Validation, and Distribution Processes (PDF 380 KB)
  7. Implications of Slow or Floating CMOS Inputs (PDF 101 KB)
  8. CMOS Power Consumption and CPD Calculation (PDF 89 KB)
  9. Designing With Logic (PDF 186 KB)
  10. Live Insertion (PDF 150 KB)
  11. Input and Output Characteristics of Digital Integrated Circuits (PDF 1708 KB)
  12. Using High Speed CMOS and Advanced CMOS in Systems With Multiple Vcc (PDF 43 KB)
  13. HiRel Unitrode Power Management Brochure (PDF 206 KB)
  14. LOGIC Pocket Data Book (PDF 6001 KB)
  15. HiRel Unitrode Power Management Brochure (PDF 206 KB)
  16. Logic Cross-Reference (PDF 2938 KB)