SN74LS348 8 线路至 3 路线优先级编码器
These TTL encoders feature priority decoding of the inputs to ensure that only the highest-order data line is encoded. The 'LS348 circuits encode eight data lines to three-line (4-2-1) binary (octal). Cascading circuitry (enable input EI and enable output EO) has been provided to allow octal expansion. Outputs A0, A1, and A2 are implemented in three-state logic for easy expansion up to 64 lines without the need for external circuitry. See Typical Application Data.
| SN74LS348 | |
| Rating | Catalog |
| Technology Family | LS |
SN74LS348 特性
- 3-State Outputs Drive Bus Lines Directly
- Encodes 8 Data Lines to 3-Line Binary (Octal)
- Applications Include:
- N-Bit Encoding
- Code Converters and Generators
- Typical Data Delay … 15 ns
- Typical Power Dissipation … 60 mW
SN74LS348 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 |
| SN74LS348D | ACTIVE | 0 to 70 | 1.10 | 1ku | SOIC (D) | 16 | 40 | TUBE | |
| SN74LS348DE4 | ACTIVE | 0 to 70 | 1.10 | 1ku | SOIC (D) | 16 | 40 | TUBE | |
| SN74LS348DG4 | ACTIVE | 0 to 70 | 1.10 | 1ku | SOIC (D) | 16 | 40 | TUBE | |
| SN74LS348DR | ACTIVE | 0 to 70 | 0.90 | 1ku | SOIC (D) | 16 | 2500 | LARGE T&R | |
| SN74LS348DRE4 | ACTIVE | 0 to 70 | 0.90 | 1ku | SOIC (D) | 16 | 2500 | LARGE T&R | |
| SN74LS348DRG4 | ACTIVE | 0 to 70 | 0.90 | 1ku | SOIC (D) | 16 | 2500 | LARGE T&R | |
| SN74LS348N | ACTIVE | 0 to 70 | 1.00 | 1ku | PDIP (N) | 16 | 25 | TUBE | |
| SN74LS348NE4 | ACTIVE | 0 to 70 | 1.00 | 1ku | PDIP (N) | 16 | 25 | TUBE |
SN74LS348 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 |
| SN74LS348D | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74LS348D | SN74LS348D |
| SN74LS348DE4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74LS348DE4 | SN74LS348DE4 |
| SN74LS348DG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74LS348DG4 | SN74LS348DG4 |
| SN74LS348N | Pb-Free (RoHS) | CU NIPDAU | N/A for Pkg Type | SN74LS348N | SN74LS348N |
| SN74LS348NE4 | Pb-Free (RoHS) | CU NIPDAU | N/A for Pkg Type | SN74LS348NE4 | SN74LS348NE4 |
SN74LS348 应用技术支持与电子电路设计开发资源下载
- SN74LS348 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)