SN74LS423 双路可重触发单稳多频振荡器

The 'LS422 and 'LS423 are identical to 'LS122 and 'LS123 except they cannot be triggered via clear.

These d-c triggered multivibrators feature output-pulse-width control by three methods. The basic pulse time is programmed by selection of external resistance and capacitance values (see typical application data). The 'LS422 contains an internal timing resistor that allows the circuits to be used with only an external capacitor, if so desired. Once triggered, the basic pulse width 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 'LS422 and 'LS423 have enough Schmitt hysteresis to ensure jitter-free triggering from the B input with transition rates as slow as 0.

SN74LS423
Voltage Nodes(V) 5  
Vcc range(V) 4.75 to 5.25  
Input Level TTL  
Output Level TTL  
Rating Catalog  
Technology Family LS
SN74LS423 特性
SN74LS423 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
SN74LS423D ACTIVE 0 to 70 3.00 | 1ku SOIC (D) | 16 50 | TUBE  
SN74LS423DE4 ACTIVE 0 to 70 3.00 | 1ku SOIC (D) | 16 50 | TUBE  
SN74LS423DG4 ACTIVE 0 to 70 3.00 | 1ku SOIC (D) | 16 50 | TUBE  
SN74LS423DR ACTIVE 0 to 70 2.50 | 1ku SOIC (D) | 16 2500 | LARGE T&R  
SN74LS423DRE4 ACTIVE 0 to 70 2.50 | 1ku SOIC (D) | 16 2500 | LARGE T&R  
SN74LS423DRG4 ACTIVE 0 to 70 2.50 | 1ku SOIC (D) | 16 2500 | LARGE T&R  
SN74LS423N ACTIVE 0 to 70 2.75 | 1ku PDIP (N) | 16 25 | TUBE  
SN74LS423NE4 ACTIVE 0 to 70 2.75 | 1ku PDIP (N) | 16 25 | TUBE  
SN74LS423 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
SN74LS423D Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74LS423D SN74LS423D
SN74LS423DE4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74LS423DE4 SN74LS423DE4
SN74LS423DG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74LS423DG4 SN74LS423DG4
SN74LS423DR Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74LS423DR SN74LS423DR
SN74LS423DRE4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74LS423DRE4 SN74LS423DRE4
SN74LS423DRG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74LS423DRG4 SN74LS423DRG4
SN74LS423N Pb-Free (RoHS)  CU NIPDAU  N/A for Pkg Type SN74LS423N SN74LS423N
SN74LS423NE4 Pb-Free (RoHS)  CU NIPDAU  N/A for Pkg Type SN74LS423NE4 SN74LS423NE4
SN74LS423 应用技术支持与电子电路设计开发资源下载
  1. SN74LS423 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)