74AC11257 具有三态输出的四路 2 线路到 1 线路数据选择器/多路复用器
This device is designed to multiplex signals from 4-bit data sources to four output data lines in bus-organized systems. The 3-state outputs do not load the data lines when the output-enable (OE\) input is at a high logic level.
To ensure the high-impedance state during power up or power down, OE\ should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver
| 74AC11257 | |
| Rating | Catalog |
| Technology Family | AC |
74AC11257 特性
- 3-State Outputs Interface Directly With System Bus
- Flow-Through Architecture Optimizes PCB Layout
- Center-Pin VCC and GND Configurations Minimize High-Speed Switching Noise
- 500-mA Typical Latch-Up Immunity at 125°C
- Provides Bus Interface From Multiple Sources in High-Performance Systems
74AC11257 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 |
| 74AC11257DW | ACTIVE | -40 to 85 | 2.85 | 1ku | SOIC (DW) | 20 | 25 | TUBE | |
| 74AC11257DWE4 | ACTIVE | -40 to 85 | 2.85 | 1ku | SOIC (DW) | 20 | 25 | TUBE | |
| 74AC11257DWG4 | ACTIVE | -40 to 85 | 2.85 | 1ku | SOIC (DW) | 20 | 25 | TUBE | |
| 74AC11257DWR | ACTIVE | -40 to 85 | 2.40 | 1ku | SOIC (DW) | 20 | 2000 | LARGE T&R | |
| 74AC11257DWRE4 | ACTIVE | -40 to 85 | 2.40 | 1ku | SOIC (DW) | 20 | 2000 | LARGE T&R | |
| 74AC11257DWRG4 | ACTIVE | -40 to 85 | 2.40 | 1ku | SOIC (DW) | 20 | 2000 | LARGE T&R | |
| 74AC11257N | ACTIVE | -40 to 85 | 2.65 | 1ku | PDIP (N) | 20 | 20 | TUBE | |
| 74AC11257NE4 | ACTIVE | -40 to 85 | 2.65 | 1ku | PDIP (N) | 20 | 20 | TUBE |
74AC11257 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 |
| 74AC11257DW | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | 74AC11257DW | 74AC11257DW |
| 74AC11257DWE4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | 74AC11257DWE4 | 74AC11257DWE4 |
| 74AC11257DWG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | 74AC11257DWG4 | 74AC11257DWG4 |
| 74AC11257DWR | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | 74AC11257DWR | 74AC11257DWR |
| 74AC11257DWRE4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | 74AC11257DWRE4 | 74AC11257DWRE4 |
| 74AC11257DWRG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | 74AC11257DWRG4 | 74AC11257DWRG4 |
| 74AC11257N | Pb-Free (RoHS) | CU NIPDAU | N/A for Pkg Type | 74AC11257N | 74AC11257N |
| 74AC11257NE4 | Pb-Free (RoHS) | CU NIPDAU | N/A for Pkg Type | 74AC11257NE4 | 74AC11257NE4 |
74AC11257 应用技术支持与电子电路设计开发资源下载
- 74AC11257 数据资料 dataSheet 下载.PDF
- TI 德州仪器MSI 功能产品选型与价格 . 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)
