PCA9518 可扩展 5 通道 I2C 集线器
The PCA9518 is an expandable five-channel bidirectional buffer for I2C and SMBus applications. The I2C protocol requires a maximum bus capacitance of 400 pF, which is derived from the number of devices on the I2C bus and the bus length. The PCA9518 overcomes this restriction by separating and buffering the I2C data (SDA) and clock (SCL) lines into multiple groups of 400-pF segments. Any segment-to-segment transition sees only one repeater delay. Each PCA9518 can communicate with other PCA9518 hubs through a 4-wire inter-hub expansion bus. Using multiple PCA9518 parts, any width hub (in multiples of five) can be implemented using the expansion pins, with only one repeater delay and no functional degradation of the system performance
|
PCA9518 |
| VCC(Min)(V) |
3 |
| VCC(Max)(V) |
3.6 |
| Technology Family |
PCA |
| Pin/Package |
20SOIC, 20SSOP, 20SSOP/QSOP, 20TSSOP |
| Max Frequency(kHz) |
400 |
| Vcc range(V) |
3.0 to 3.6 |
| Channel Width |
5 |
| EXP Pin |
Yes |
| Master Side I2C Bus Capacitance Supported(pF) |
400 |
| Slave Side I2C Bus Capacitance Supported(pF) |
400 |
| 5V Tolerant I/O |
Yes |
| Open–Drain I/O Type |
Yes |
| Enable Pin |
Yes |
PCA9518 特性
- Expandable Five-Channel Bidirectional Buffer
- 400-kHz Fast I2C Bus
- Operating VCC Range of 3 V to 3.6 V
- 5-V Tolerant I2C and Enable Input Pins to Support
Mixed-Mode Signal Operation
- Active-High Individual Repeater Enable Inputs
- Open-Drain Input/Outputs
- Lockup-Free Operation
- Supports Multiple Masters
- Powered-Off High-Impedance I2C Pins
- I2C Bus and SMBus Compatible
- Latchup Performance Exceeds 100 mA Per JESD 78
- ESD Protection Exceeds JESD 22
- 2000-V Human-Body Model (A114-A)
- 200-V Machine Model (A115-A)
- 1000-V Charged-Device Model (C101)
PCA9518 芯片订购指南
PCA9518 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 |
| PCA9518DBQR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
PCA9518DBQR |
PCA9518DBQR |
| PCA9518DBQRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
PCA9518DBQRG4 |
PCA9518DBQRG4 |
| PCA9518DBR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
PCA9518DBR |
PCA9518DBR |
| PCA9518DBRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
PCA9518DBRG4 |
PCA9518DBRG4 |
| PCA9518DBT |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
PCA9518DBT |
PCA9518DBT |
| PCA9518DBTG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
PCA9518DBTG4 |
PCA9518DBTG4 |
| PCA9518DW |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
PCA9518DW |
PCA9518DW |
| PCA9518DWG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
PCA9518DWG4 |
PCA9518DWG4 |
| PCA9518DWR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
PCA9518DWR |
PCA9518DWR |
| PCA9518DWRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
PCA9518DWRG4 |
PCA9518DWRG4 |
| PCA9518DWT |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
PCA9518DWT |
PCA9518DWT |
| PCA9518DWTG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
PCA9518DWTG4 |
PCA9518DWTG4 |
| PCA9518PW |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
PCA9518PW |
PCA9518PW |
| PCA9518PWR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
PCA9518PWR |
PCA9518PWR |
| PCA9518PWT |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
PCA9518PWT |
PCA9518PWT |
PCA9518 应用技术支持与电子电路设计开发资源下载
- PCA9518 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)