SN74LS123 可重触发单稳多频振荡器

These d-c triggered multivibrators feature output pulse-duration control by three methods. The basic pulse time is programmed by selection of external resistance and capacitance values (see typical application data). The '122 and 'LS122 have internal timing resistors that allow the circuits to be used with only an external capacitor, if so desired. Once triggered, the basic pulse duration may be extended by retriggering the gated low-level-active (A) or high-level-active (B) inputs, or be reduced by use of the overriding clear. Figure 1 illustrates pulse control by retriggering and early clear.

The 'LS122 and 'LS123 are provided enough Schmitt hysteresis to ensure jitter-free triggering from the B input with transition rates as slow as 0

SN74LS123
Voltage Nodes(V) 5  
Vcc range(V) 4.75 to 5.25  
Input Level TTL  
Output Level TTL  
Rating Catalog  
Technology Family LS 
SN74LS123 特性
SN74LS123 芯片订购指南
器件 状态 温度 价格(美元) 封装 | 引脚 封装数量 | 封装载体 丝印标记
SN74LS123D ACTIVE 0 to 70 3.00 | 1ku SOIC (D) | 14 50 | TUBE  
SN74LS123DE4 ACTIVE 0 to 70 3.00 | 1ku SOIC (D) | 14 50 | TUBE  
SN74LS123DG4 ACTIVE 0 to 70 3.00 | 1ku SOIC (D) | 14 50 | TUBE  
SN74LS123DR ACTIVE 0 to 70 2.50 | 1ku SOIC (D) | 14 2500 | LARGE T&R  
SN74LS123DRE4 ACTIVE 0 to 70 2.50 | 1ku SOIC (D) | 14 2500 | LARGE T&R  
SN74LS123DRG4 ACTIVE 0 to 70 2.50 | 1ku SOIC (D) | 14 2500 | LARGE T&R  
SN74LS123N ACTIVE 0 to 70 2.75 | 1ku PDIP (N) | 14 25 | TUBE  
SN74LS123NE4 ACTIVE 0 to 70 2.75 | 1ku PDIP (N) | 14 25 | TUBE  
SN74LS123 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
SN74LS123D Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74LS123D SN74LS123D
SN74LS123DE4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74LS123DE4 SN74LS123DE4
SN74LS123DG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74LS123DG4 SN74LS123DG4
SN74LS123DR Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74LS123DR SN74LS123DR
SN74LS123DRE4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74LS123DRE4 SN74LS123DRE4
SN74LS123DRG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74LS123DRG4 SN74LS123DRG4
SN74LS123N Pb-Free (RoHS)  CU NIPDAU  N/A for Pkg Type SN74LS123N SN74LS123N
SN74LS123NE4 Pb-Free (RoHS)  CU NIPDAU  N/A for Pkg Type SN74LS123NE4 SN74LS123NE4
SN74LS123 应用技术支持与电子电路设计开发资源下载
  1. SN74LS123 数据资料 dataSheet 下载.PDF
  2. TI 德州仪器特殊逻辑产品选型与价格 . xls
  3. Shelf-Life Evaluation of Lead-Free Component Finishes (PDF 1305 KB)
  4. Understanding and Interpreting Standard-Logic Data Sheets (PDF 857 KB)
  5. TI IBIS File Creation, Validation, and Distribution Processes (PDF 380 KB)
  6. Implications of Slow or Floating CMOS Inputs (PDF 101 KB)
  7. CMOS Power Consumption and CPD Calculation (PDF 89 KB)
  8. Designing With Logic (PDF 186 KB)
  9. Live Insertion (PDF 150 KB)
  10. Input and Output Characteristics of Digital Integrated Circuits (PDF 1708 KB)
  11. Using High Speed CMOS and Advanced CMOS in Systems With Multiple Vcc (PDF 43 KB)
  12. HiRel Unitrode Power Management Brochure (PDF 206 KB)
  13. LOGIC Pocket Data Book (PDF 6001 KB)
  14. HiRel Unitrode Power Management Brochure (PDF 206 KB)
  15. Logic Cross-Reference (PDF 2938 KB)