SN74LVC257A 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

These quadruple 2-line to 1-line data selectors/multiplexers are designed for 1.65-V to 3.6-V VCC operation.

The ’LVC257A devices are designed to multiplex signals from 4-bit data sources to 4-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.

Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of these devices as translators in a mixed 3.3-V/5-V system environment.

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.

SN74LVC257A
Rating Catalog  
Technology Family LVC  
SN74LVC257A 特性
SN74LVC257A 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
SN74LVC257AD ACTIVE 0 to 70 0.95 | 1ku SOIC (D) | 16 40 | TUBE  
SN74LVC257ADE4 ACTIVE 0 to 70 0.95 | 1ku SOIC (D) | 16 40 | TUBE  
SN74LVC257ADG4 ACTIVE 0 to 70 0.95 | 1ku SOIC (D) | 16 40 | TUBE  
SN74LVC257ADR ACTIVE 0 to 70 0.80 | 1ku SOIC (D) | 16 2500 | LARGE T&R  
SN74LVC257ADRE4 ACTIVE 0 to 70 0.80 | 1ku SOIC (D) | 16 2500 | LARGE T&R  
SN74LVC257ADRG4 ACTIVE 0 to 70 0.80 | 1ku SOIC (D) | 16 2500 | LARGE T&R  
SN74LVC257AN ACTIVE 0 to 70 0.90 | 1ku PDIP (N) | 16 25 | TUBE  
SN74LVC257ANE4 ACTIVE 0 to 70 0.90 | 1ku PDIP (N) | 16 25 | TUBE  
SN74LVC257A 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
SN74LVC257AD Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74LVC257AD SN74LVC257AD
SN74LVC257ADE4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74LVC257ADE4 SN74LVC257ADE4
SN74LVC257ADG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74LVC257ADG4 SN74LVC257ADG4
SN74LVC257ADR Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74LVC257ADR SN74LVC257ADR
SN74LVC257ADRE4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74LVC257ADRE4 SN74LVC257ADRE4
SN74LVC257ADRG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74LVC257ADRG4 SN74LVC257ADRG4
SN74LVC257AN Pb-Free (RoHS)  CU NIPDAU  N/A for Pkg Type SN74LVC257AN SN74LVC257AN
SN74LVC257ANE4 Pb-Free (RoHS)  CU NIPDAU  N/A for Pkg Type SN74LVC257ANE4 SN74LVC257ANE4
SN74LVC257A 应用技术支持与电子电路设计开发资源下载
  1. SN74LVC257A 数据资料 dataSheet 下载.PDF
  2. TI 德州仪器MSI 功能产品选型与价格 . 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)