SN74ALS521 具有集电极开路输出的 8 位标识比较器
These identity comparators perform comparisons on two 8-bit binary or BCD words. The SN74ALS518 provides P = Q outputs, while the 'ALS520 and SN74ALS521 provide P = Q\ outputs. The SN74ALS518 has an open-collector output. The SN74ALS518 and 'ALS520 feature 20-k pullup resistors on the Q inputs for analog or switch data.
The SN54ALS520 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS518, SN74ALS520, and SN74ALS521 are characterized for operation from 0°C to 70°C
| SN74ALS521 | |
| Rating | Catalog |
| Technology Family | ALS |
SN74ALS521 特性
- Compare Two 8-Bit Words
- Choice of Totem-Pole or Open-Collector Outputs
- SN74ALS518 and 'ALS520 Have 20-k Pullup Resistors on Q Inputs
- Package Options Include Plastic Small-Outline (DW) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs
SN74ALS521 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 |
| SN74ALS521DW | ACTIVE | 0 to 70 | 1.35 | 1ku | SOIC (DW) | 20 | 25 | TUBE | |
| SN74ALS521DWE4 | ACTIVE | 0 to 70 | 1.35 | 1ku | SOIC (DW) | 20 | 25 | TUBE | |
| SN74ALS521DWG4 | ACTIVE | 0 to 70 | 1.35 | 1ku | SOIC (DW) | 20 | 25 | TUBE | |
| SN74ALS521DWR | ACTIVE | 0 to 70 | 1.15 | 1ku | SOIC (DW) | 20 | 2000 | LARGE T&R | |
| SN74ALS521DWRE4 | ACTIVE | 0 to 70 | 1.15 | 1ku | SOIC (DW) | 20 | 2000 | LARGE T&R | |
| SN74ALS521DWRG4 | ACTIVE | 0 to 70 | 1.15 | 1ku | SOIC (DW) | 20 | 2000 | LARGE T&R | |
| SN74ALS521N | ACTIVE | 0 to 70 | 1.25 | 1ku | PDIP (N) | 20 | 20 | TUBE | |
| SN74ALS521NE4 | ACTIVE | 0 to 70 | 1.25 | 1ku | PDIP (N) | 20 | 20 | TUBE |
SN74ALS521 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 |
| SN74ALS521DW | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74ALS521DW | SN74ALS521DW |
| SN74ALS521DWE4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74ALS521DWE4 | SN74ALS521DWE4 |
| SN74ALS521DWG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74ALS521DWG4 | SN74ALS521DWG4 |
| SN74ALS521DWR | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74ALS521DWR | SN74ALS521DWR |
| SN74ALS521DWRE4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74ALS521DWRE4 | SN74ALS521DWRE4 |
| SN74ALS521DWRG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74ALS521DWRG4 | SN74ALS521DWRG4 |
| SN74ALS521N | Pb-Free (RoHS) | CU NIPDAU | N/A for Pkg Type | SN74ALS521N | SN74ALS521N |
| SN74ALS521NE4 | Pb-Free (RoHS) | CU NIPDAU | N/A for Pkg Type | SN74ALS521NE4 | SN74ALS521NE4 |
SN74ALS521 应用技术支持与电子电路设计开发资源下载
- SN74ALS521 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)