CD74ACT297 数字锁相环

The CD74ACT297 provides a simple, cost-effective solution to high-accuracy, digital, phase-locked-loop applications. This device contains all the necessary circuits, with the exception of the divide-by-N counter, to build first-order phase-locked loops as shown in Figure 1.

Both exclusive-OR phase detectors (XORPDs) and edge-controlled (ECPD) phase detectors are provided for maximum flexibility.

Proper partitioning of the loop function, with many of the building blocks external to the package, makes it easy for the designer to incorporate ripple cancellation or to cascade to higher-order phase-locked loops.

The length of the up/down K counter is digitally programmable according to the K-counter function table

CD74ACT297
Voltage Nodes(V) 5
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CD74ACT297 特性
CD74ACT297 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
CD74ACT297E ACTIVE -55 to 125 0.36 | 1ku PDIP (N) | 16 25 | TUBE  
CD74ACT297EE4 ACTIVE -55 to 125 0.36 | 1ku PDIP (N) | 16 25 | TUBE  
CD74ACT297M ACTIVE -55 to 125 0.40 | 1ku SOIC (D) | 16 40 | TUBE  
CD74ACT297M96 ACTIVE -55 to 125 0.33 | 1ku SOIC (D) | 16 2500 | LARGE T&R  
CD74ACT297M96E4 ACTIVE -55 to 125 0.33 | 1ku SOIC (D) | 16 2500 | LARGE T&R  
CD74ACT297M96G4 ACTIVE -55 to 125 0.33 | 1ku SOIC (D) | 16 2500 | LARGE T&R  
CD74ACT297ME4 ACTIVE -55 to 125 0.40 | 1ku SOIC (D) | 16 40 | TUBE  
CD74ACT297MG4 ACTIVE -55 to 125 0.40 | 1ku SOIC (D) | 16 40 | TUBE  
CD74ACT297 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
CD74ACT297E Pb-Free (RoHS)  CU NIPDAU  N/A for Pkg Type CD74ACT297E CD74ACT297E
CD74ACT297EE4 Pb-Free (RoHS)  CU NIPDAU  N/A for Pkg Type CD74ACT297EE4 CD74ACT297EE4
CD74ACT297M Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM CD74ACT297M CD74ACT297M
CD74ACT297M96 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM CD74ACT297M96 CD74ACT297M96
CD74ACT297M96E4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM CD74ACT297M96E4 CD74ACT297M96E4
CD74ACT297M96G4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM CD74ACT297M96G4 CD74ACT297M96G4
CD74ACT297ME4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM CD74ACT297ME4 CD74ACT297ME4
CD74ACT297MG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM CD74ACT297MG4 CD74ACT297MG4
CD74ACT297 应用技术支持与电子电路设计开发资源下载
  1. CD74ACT297 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)