SN74AC74 具有清零和预设功能的双路上升沿 D 类触发器

The ’AC74 devices are dual positive-edge-triggered D-type flip-flops.

A low level at the preset (PRE)\ or clear (CLR)\ input 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 is transferred to the outputs on the positive-going edge of the clock pulse. Clock triggering occurs at a voltage level and is not directly related to the rise time of the clock pulse. Following the hold-time interval, data at D can be changed without affecting the levels at the outputs.

SN74AC74
Voltage Nodes(V) 5, 3.3  
Rating Catalog
SN74AC74 特性
SN74AC74 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
SN74AC74DBLE OBSOLETE -40 to 85   SSOP (DB) | 14    
SN74AC74DBR ACTIVE -40 to 85 0.40 | 1ku SSOP (DB) | 14 2000 | LARGE T&R  
SN74AC74DBRG4 ACTIVE -40 to 85 0.40 | 1ku SSOP (DB) | 14 2000 | LARGE T&R  
SN74AC74DW ACTIVE -40 to 85 0.43 | 1ku SOIC (D) | 14 25 | TUBE  
SN74AC74DWE4 ACTIVE -40 to 85 0.43 | 1ku SOIC (D) | 14 25 | TUBE  
SN74AC74DWG4 ACTIVE -40 to 85 0.43 | 1ku SOIC (D) | 14 25 | TUBE  
SN74AC74DWR ACTIVE -40 to 85 0.36 | 1ku SOIC (D) | 14 2000 | LARGE T&R  
SN74AC74DWRE4 ACTIVE -40 to 85 0.36 | 1ku SOIC (D) | 14 2000 | LARGE T&R  
SN74AC74DWRG4 ACTIVE -40 to 85 0.36 | 1ku SOIC (D) | 14 2000 | LARGE T&R  
SN74AC74N ACTIVE -40 to 85 0.40 | 1ku PDIP (N) | 14 20 | TUBE  
SN74AC74NE4 ACTIVE -40 to 85 0.40 | 1ku PDIP (N) | 14 20 | TUBE  
SN74AC74NSR ACTIVE -40 to 85 0.40 | 1ku SO (NS) | 14 2000 | LARGE T&R  
SN74AC74NSRE4 ACTIVE -40 to 85 0.40 | 1ku SO (NS) | 14 2000 | LARGE T&R  
SN74AC74NSRG4 ACTIVE -40 to 85 0.40 | 1ku SO (NS) | 14 2000 | LARGE T&R  
SN74AC74PW ACTIVE -40 to 85 0.43 | 1ku TSSOP (PW) | 14 70 | TUBE  
SN74AC74PWE4 ACTIVE -40 to 85 0.43 | 1ku TSSOP (PW) | 14 70 | TUBE  
SN74AC74PWG4 ACTIVE -40 to 85 0.43 | 1ku TSSOP (PW) | 14 70 | TUBE  
SN74AC74PWLE OBSOLETE -40 to 85   TSSOP (PW) | 14    
SN74AC74PWR ACTIVE -40 to 85 0.36 | 1ku TSSOP (PW) | 14 2000 | LARGE T&R  
SN74AC74PWRE4 ACTIVE -40 to 85 0.36 | 1ku TSSOP (PW) | 14 2000 | LARGE T&R  
SN74AC74PWRG4 ACTIVE -40 to 85 0.36 | 1ku TSSOP (PW) | 14 2000 | LARGE T&R  
SN74AC74 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
SN74AC74DBR Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74AC74DBR SN74AC74DBR
SN74AC74DBRG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74AC74DBRG4 SN74AC74DBRG4
SN74AC74DW Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74AC74DW SN74AC74DW
SN74AC74DWE4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74AC74DWE4 SN74AC74DWE4
SN74AC74DWG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74AC74DWG4 SN74AC74DWG4
SN74AC74DWR Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74AC74DWR SN74AC74DWR
SN74AC74DWRE4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74AC74DWRE4 SN74AC74DWRE4
SN74AC74DWRG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74AC74DWRG4 SN74AC74DWRG4
SN74AC74N Pb-Free (RoHS)  CU NIPDAU  N/A for Pkg Type SN74AC74N SN74AC74N
SN74AC74NE4 Pb-Free (RoHS)  CU NIPDAU  N/A for Pkg Type SN74AC74NE4 SN74AC74NE4
SN74AC74NSR Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74AC74NSR SN74AC74NSR
SN74AC74NSRE4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74AC74NSRE4 SN74AC74NSRE4
SN74AC74NSRG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74AC74NSRG4 SN74AC74NSRG4
SN74AC74PW Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74AC74PW SN74AC74PW
SN74AC74PWE4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74AC74PWE4 SN74AC74PWE4
SN74AC74PWG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74AC74PWG4 SN74AC74PWG4
SN74AC74PWR Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74AC74PWR SN74AC74PWR
SN74AC74PWRE4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74AC74PWRE4 SN74AC74PWRE4
SN74AC74PWRG4 Green (RoHS & no Sb/Br)  CU NIPDAU  Level-1-260C-UNLIM SN74AC74PWRG4 SN74AC74PWRG4
SN74AC74 应用技术支持与电子电路设计开发资源下载
  1. SN74AC74 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)