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
- 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 uA
- 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
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
- TCA6424A 数据资料 dataSheet 下载.PDF
- TI 德州仪器I2C 逻辑器件产品选型与价格 . xls
- Logic Guide 2009 (PDF 4263 KB)
- Shelf-Life Evaluation of Lead-Free Component Finishes (PDF 1305 KB)
- Understanding and Interpreting Standard-Logic Data Sheets (PDF 857 KB)
- TI IBIS File Creation, Validation, and Distribution Processes (PDF 380 KB)
- Implications of Slow or Floating CMOS Inputs (PDF 101 KB)
- CMOS Power Consumption and CPD Calculation (PDF 89 KB)
- Designing With Logic (PDF 186 KB)
- Live Insertion (PDF 150 KB)
- Input and Output Characteristics of Digital Integrated Circuits (PDF 1708 KB)
- Using High Speed CMOS and Advanced CMOS in Systems With Multiple Vcc (PDF 43 KB)
- HiRel Unitrode Power Management Brochure (PDF 206 KB)
- LOGIC Pocket Data Book (PDF 6001 KB)
- HiRel Unitrode Power Management Brochure (PDF 206 KB)
- Logic Cross-Reference (PDF 2938 KB)