CD74HC221 具有复位功能的高速 CMOS 逻辑双路单稳多频振荡器

The ’HC221 and CD74HCT221 are dual monostable multivibrators with reset. An external resistor (RX) and an external capacitor (CX) control the timing and the accuracy for the circuit. Adjustment of RX and CX provides a wide range of output pulse widths from the Q and Q\ terminals. Pulse triggering on the B input occurs at a particular voltage level and is not related to the rise and fall time of the trigger pulse.

Once triggered, the outputs are independent of further trigger inputs on A\ and B. The output pulse can be terminated by a LOW level on the Reset (R)\ pin. Trailing Edge triggering (A)\ and leading-edge-triggering (B) inputs are provided for triggering from either edge of the input pulse. On power up, the IC is reset

CD74HC221
Rating Catalog  
Technology Family HC  
CD74HC221 特性
CD74HC221 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
CD74HC221E ACTIVE -55 to 125 0.29 | 1ku PDIP (N) | 16 25 | TUBE  
CD74HC221EE4 ACTIVE -55 to 125 0.29 | 1ku PDIP (N) | 16 25 | TUBE  
CD74HC221M ACTIVE -55 to 125 0.32 | 1ku SOIC (D) | 16 40 | TUBE  
CD74HC221M96 ACTIVE -55 to 125 0.26 | 1ku SOIC (D) | 16 2500 | LARGE T&R  
CD74HC221M96E4 ACTIVE -55 to 125 0.26 | 1ku SOIC (D) | 16 2500 | LARGE T&R  
CD74HC221M96G4 ACTIVE -55 to 125 0.26 | 1ku SOIC (D) | 16 2500 | LARGE T&R  
CD74HC221ME4 ACTIVE -55 to 125 0.32 | 1ku SOIC (D) | 16 40 | TUBE  
CD74HC221MG4 ACTIVE -55 to 125 0.32 | 1ku SOIC (D) | 16 40 | TUBE  
CD74HC221MT ACTIVE -55 to 125 0.26 | 1ku SOIC (D) | 16 250 | SMALL T&R  
CD74HC221MTE4 ACTIVE -55 to 125 0.26 | 1ku SOIC (D) | 16 250 | SMALL T&R  
CD74HC221MTG4 ACTIVE -55 to 125 0.26 | 1ku SOIC (D) | 16 250 | SMALL T&R  
CD74HC221NSR ACTIVE -55 to 125 0.29 | 1ku SO (NS) | 16 2000 | LARGE T&R  
CD74HC221NSRE4 ACTIVE -55 to 125 0.29 | 1ku SO (NS) | 16 2000 | LARGE T&R  
CD74HC221NSRG4 ACTIVE -55 to 125 0.29 | 1ku SO (NS) | 16 2000 | LARGE T&R  
CD74HC221PW ACTIVE -55 to 125 0.32 | 1ku TSSOP (PW) | 16 90 | TUBE  
CD74HC221PWE4 ACTIVE -55 to 125 0.32 | 1ku TSSOP (PW) | 16 90 | TUBE  
CD74HC221PWG4 ACTIVE -55 to 125 0.32 | 1ku TSSOP (PW) | 16 90 | TUBE  
CD74HC221PWR ACTIVE -55 to 125 0.26 | 1ku TSSOP (PW) | 16 2000 | LARGE T&R  
CD74HC221PWRE4 ACTIVE -55 to 125 0.26 | 1ku TSSOP (PW) | 16 2000 | LARGE T&R  
CD74HC221PWRG4 ACTIVE -55 to 125 0.26 | 1ku TSSOP (PW) | 16 2000 | LARGE T&R  
CD74HC221PWT ACTIVE -55 to 125 0.60 | 1ku TSSOP (PW) | 16 250 | SMALL T&R  
CD74HC221PWTE4 ACTIVE -55 to 125 0.60 | 1ku TSSOP (PW) | 16 250 | SMALL T&R  
CD74HC221PWTG4 ACTIVE -55 to 125 0.60 | 1ku TSSOP (PW) | 16 250 | SMALL T&R  
CD74HC221 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
CD74HC221E Pb-Free (RoHS)  CU NIPDAU  N/A for Pkg Type CD74HC221E CD74HC221E
CD74HC221EE4 Pb-Free (RoHS)  CU NIPDAU  N/A for Pkg Type CD74HC221EE4 CD74HC221EE4
CD74HC221M Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM CD74HC221M CD74HC221M
CD74HC221M96 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM CD74HC221M96 CD74HC221M96
CD74HC221M96E4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM CD74HC221M96E4 CD74HC221M96E4
CD74HC221M96G4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM CD74HC221M96G4 CD74HC221M96G4
CD74HC221ME4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM CD74HC221ME4 CD74HC221ME4
CD74HC221MG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM CD74HC221MG4 CD74HC221MG4
CD74HC221MT Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM CD74HC221MT CD74HC221MT
CD74HC221MTE4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM CD74HC221MTE4 CD74HC221MTE4
CD74HC221MTG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM CD74HC221MTG4 CD74HC221MTG4
CD74HC221NSR Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM CD74HC221NSR CD74HC221NSR
CD74HC221NSRE4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM CD74HC221NSRE4 CD74HC221NSRE4
CD74HC221NSRG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM CD74HC221NSRG4 CD74HC221NSRG4
CD74HC221PW Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM CD74HC221PW CD74HC221PW
CD74HC221PWE4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM CD74HC221PWE4 CD74HC221PWE4
CD74HC221PWG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM CD74HC221PWG4 CD74HC221PWG4
CD74HC221PWR Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM CD74HC221PWR CD74HC221PWR
CD74HC221PWRE4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM CD74HC221PWRE4 CD74HC221PWRE4
CD74HC221PWRG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM CD74HC221PWRG4 CD74HC221PWRG4
CD74HC221PWT Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM CD74HC221PWT CD74HC221PWT
CD74HC221PWTE4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM CD74HC221PWTE4 CD74HC221PWTE4
CD74HC221PWTG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM CD74HC221PWTG4 CD74HC221PWTG4
CD74HC221 应用技术支持与电子电路设计开发资源下载
  1. CD74HC221 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)