SN74LS684 八位的二进制或 BCD 码幅度比较器
These magnitude comparators perform comparisons of two eight-bit binary or BCD words. All types provide P = Q\ outputs and all except 'LS688 provide P > Q\ outputs as well. The 'LS682, 'LS684, 'LS686, and 'LS688 have totem-pole outputs, while the 'LS685 and 'LS687 have open-collector outputs. The 'LS682 features 20-k
pullup termination resistors on the Q inputs for analog or switch data.
| SN74LS684 | |
| Rating | Catalog |
| Technology Family | LS |
SN74LS684 特性
- Compares Two-8-Bit Words
- Choice of Totem-Pole or Open-Collector Outputs
- Hysteresis at P and Q Inputs
- 'LS682 has 20-k Pullup Resistors on the Q Inputs
- SN74LS686 and 'LS687 … JT and NT 24-Pin, 300-Mil Packages
SN74LS684 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 |
| SN74LS684DW | ACTIVE | 0 to 70 | 1.75 | 1ku | SOIC (DW) | 20 | 25 | TUBE | |
| SN74LS684DWE4 | ACTIVE | 0 to 70 | 1.75 | 1ku | SOIC (DW) | 20 | 25 | TUBE | |
| SN74LS684DWG4 | ACTIVE | 0 to 70 | 1.75 | 1ku | SOIC (DW) | 20 | 25 | TUBE | |
| SN74LS684DWR | ACTIVE | 0 to 70 | 1.45 | 1ku | SOIC (DW) | 20 | 2000 | LARGE T&R | |
| SN74LS684DWRE4 | ACTIVE | 0 to 70 | 1.45 | 1ku | SOIC (DW) | 20 | 2000 | LARGE T&R | |
| SN74LS684DWRG4 | ACTIVE | 0 to 70 | 1.45 | 1ku | SOIC (DW) | 20 | 2000 | LARGE T&R | |
| SN74LS684N | ACTIVE | 0 to 70 | 1.60 | 1ku | PDIP (N) | 20 | 20 | TUBE | |
| SN74LS684NE4 | ACTIVE | 0 to 70 | 1.60 | 1ku | PDIP (N) | 20 | 20 | TUBE |
SN74LS684 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 |
| SN74LS684DW | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74LS684DW | SN74LS684DW |
| SN74LS684DWE4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74LS684DWE4 | SN74LS684DWE4 |
| SN74LS684DWG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74LS684DWG4 | SN74LS684DWG4 |
| SN74LS684DWR | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74LS684DWR | SN74LS684DWR |
| SN74LS684DWRE4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74LS684DWRE4 | SN74LS684DWRE4 |
| SN74LS684DWRG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74LS684DWRG4 | SN74LS684DWRG4 |
| SN74LS684N | Pb-Free (RoHS) | CU NIPDAU | N/A for Pkg Type | SN74LS684N | SN74LS684N |
| SN74LS684NE4 | Pb-Free (RoHS) | CU NIPDAU | N/A for Pkg Type | SN74LS684NE4 | SN74LS684NE4 |
SN74LS684 应用技术支持与电子电路设计开发资源下载
- SN74LS684 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)