SN74HC74 具有清零和预设功能的双路 D 类上升沿触发器

The ’HC74 devices contain two independent D-type positive-edge-triggered flip-flops. A low level at the preset (PRE)\ or clear (CLR)\ inputs sets or resets the outputs, regardless of the levels of the other inputs. When PRE\ and CLR\ are inactive (high), data at the data (D) input meeting the setup time requirements are transferred to the outputs on the positive-going edge of the clock (CLK) pulse. Clock triggering occurs at a voltage level and is not directly related to the rise time of CLK. Following the hold-time interval, data at the D input can be changed without affecting the levels at the outputs.

SN74HC74
Voltage Nodes(V) 5
Rating Catalog
SN74HC74 特性
SN74HC74 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
SN74HC74DBLE OBSOLETE -40 to 85   SSOP (DB) | 14    
SN74HC74DBR ACTIVE -40 to 85 0.40 | 1ku SSOP (DB) | 14 2000 | LARGE T&R  
SN74HC74DBRG4 ACTIVE -40 to 85 0.40 | 1ku SSOP (DB) | 14 2000 | LARGE T&R  
SN74HC74DW ACTIVE -40 to 85 0.43 | 1ku SOIC (D) | 14 25 | TUBE  
SN74HC74DWE4 ACTIVE -40 to 85 0.43 | 1ku SOIC (D) | 14 25 | TUBE  
SN74HC74DWG4 ACTIVE -40 to 85 0.43 | 1ku SOIC (D) | 14 25 | TUBE  
SN74HC74DWR ACTIVE -40 to 85 0.36 | 1ku SOIC (D) | 14 2000 | LARGE T&R  
SN74HC74DWRE4 ACTIVE -40 to 85 0.36 | 1ku SOIC (D) | 14 2000 | LARGE T&R  
SN74HC74DWRG4 ACTIVE -40 to 85 0.36 | 1ku SOIC (D) | 14 2000 | LARGE T&R  
SN74HC74N ACTIVE -40 to 85 0.40 | 1ku PDIP (N) | 14 20 | TUBE  
SN74HC74NE4 ACTIVE -40 to 85 0.40 | 1ku PDIP (N) | 14 20 | TUBE  
SN74HC74NSR ACTIVE -40 to 85 0.40 | 1ku SO (NS) | 14 2000 | LARGE T&R  
SN74HC74NSRE4 ACTIVE -40 to 85 0.40 | 1ku SO (NS) | 14 2000 | LARGE T&R  
SN74HC74NSRG4 ACTIVE -40 to 85 0.40 | 1ku SO (NS) | 14 2000 | LARGE T&R  
SN74HC74PW ACTIVE -40 to 85 0.43 | 1ku TSSOP (PW) | 14 70 | TUBE  
SN74HC74PWE4 ACTIVE -40 to 85 0.43 | 1ku TSSOP (PW) | 14 70 | TUBE  
SN74HC74PWG4 ACTIVE -40 to 85 0.43 | 1ku TSSOP (PW) | 14 70 | TUBE  
SN74HC74PWLE OBSOLETE -40 to 85   TSSOP (PW) | 14    
SN74HC74PWR ACTIVE -40 to 85 0.36 | 1ku TSSOP (PW) | 14 2000 | LARGE T&R  
SN74HC74PWRE4 ACTIVE -40 to 85 0.36 | 1ku TSSOP (PW) | 14 2000 | LARGE T&R  
SN74HC74PWRG4 ACTIVE -40 to 85 0.36 | 1ku TSSOP (PW) | 14 2000 | LARGE T&R  
SN74HC74 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
SN74HC74DBR Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74HC74DBR SN74HC74DBR
SN74HC74DBRG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74HC74DBRG4 SN74HC74DBRG4
SN74HC74DW Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74HC74DW SN74HC74DW
SN74HC74DWE4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74HC74DWE4 SN74HC74DWE4
SN74HC74DWG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74HC74DWG4 SN74HC74DWG4
SN74HC74DWR Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74HC74DWR SN74HC74DWR
SN74HC74DWRE4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74HC74DWRE4 SN74HC74DWRE4
SN74HC74DWRG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74HC74DWRG4 SN74HC74DWRG4
SN74HC74N Pb-Free (RoHS)  CU NIPDAU  N/A for Pkg Type SN74HC74N SN74HC74N
SN74HC74NE4 Pb-Free (RoHS)  CU NIPDAU  N/A for Pkg Type SN74HC74NE4 SN74HC74NE4
SN74HC74NSR Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74HC74NSR SN74HC74NSR
SN74HC74NSRE4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74HC74NSRE4 SN74HC74NSRE4
SN74HC74NSRG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74HC74NSRG4 SN74HC74NSRG4
SN74HC74PW Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74HC74PW SN74HC74PW
SN74HC74PWE4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74HC74PWE4 SN74HC74PWE4
SN74HC74PWG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74HC74PWG4 SN74HC74PWG4
SN74HC74PWR Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74HC74PWR SN74HC74PWR
SN74HC74PWRE4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74HC74PWRE4 SN74HC74PWRE4
SN74HC74PWRG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74HC74PWRG4 SN74HC74PWRG4
SN74HC74 应用技术支持与电子电路设计开发资源下载
  1. SN74HC74 数据资料 dataSheet 下载.PDF
  2. TI 德州仪器触发器/锁存器/寄存器产品选型与价格 . 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)