SN74HC21 双路 4 输入正与门
These devices contain two independent 4-input AND gates. They perform the Boolean function Y = A • B • C • D or Y = (A\ + B\ + C\ + D\)\ in positive logic.
| SN74HC21 | |
| Rating | Catalog |
| Technology Family | HC |
SN74HC21 特性
- Wide Operating Voltage Range of 2 V to 6 V
- Outputs Can Drive Up To 10 LSTTL Loads
- Low Power Consumption, 20-µA Max ICC
- Typical tpd = 11 ns
- ±4-mA Output Drive at 5 V
- Low Input Current of 1 µA Max
SN74HC21 芯片订购指南
| 器件 | 状态 | 温度 | 价格 | 封装 | 引脚 | 封装数量 | 封装载体 | 丝印标记 |
| SN74HC21D | ACTIVE | -40 to 85 | 0.24 | 1ku | SOIC (D) | 14 | 50 | TUBE | |
| SN74HC21DE4 | ACTIVE | -40 to 85 | 0.24 | 1ku | SOIC (D) | 14 | 50 | TUBE | |
| SN74HC21DG4 | ACTIVE | -40 to 85 | 0.24 | 1ku | SOIC (D) | 14 | 50 | TUBE | |
| SN74HC21DR | ACTIVE | -40 to 85 | 0.20 | 1ku | SOIC (D) | 14 | 2500 | LARGE T&R | |
| SN74HC21DRE4 | ACTIVE | -40 to 85 | 0.20 | 1ku | SOIC (D) | 14 | 2500 | LARGE T&R | |
| SN74HC21DRG4 | ACTIVE | -40 to 85 | 0.20 | 1ku | SOIC (D) | 14 | 2500 | LARGE T&R | |
| SN74HC21N | ACTIVE | -40 to 85 | 0.22 | 1ku | PDIP (N) | 14 | 25 | TUBE | |
| SN74HC21NE4 | ACTIVE | -40 to 85 | 0.22 | 1ku | PDIP (N) | 14 | 25 | TUBE |
SN74HC21 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 |
| SN74HC21D | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74HC21D | SN74HC21D |
| SN74HC21DE4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74HC21DE4 | SN74HC21DE4 |
| SN74HC21DG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74HC21DG4 | SN74HC21DG4 |
| SN74HC21DR | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74HC21DR | SN74HC21DR |
| SN74HC21DRE4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74HC21DRE4 | SN74HC21DRE4 |
| SN74HC21DRG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74HC21DRG4 | SN74HC21DRG4 |
| SN74HC21N | Pb-Free (RoHS) | CU NIPDAU | N/A for Pkg Type | SN74HC21N | SN74HC21N |
| SN74HC21NE4 | Pb-Free (RoHS) | CU NIPDAU | N/A for Pkg Type | SN74HC21NE4 | SN74HC21NE4 |
SN74HC21 应用技术支持与电子电路设计开发资源下载
- SN74HC21 数据资料 dataSheet 下载.PDF
- TI 德州仪器门电路产品选型与价格 . xls
- Logic Guide 2009 (PDF 4263 KB)
- Shelf-Life Evaluation of Lead-Free Component Finishes (PDF 1305 KB)
- Understanding and Interpreting Standard-Logic Data Sheets (PDF 857 KB)
- TI IBIS File Creation, Validation, and Distribution Processes (PDF 380 KB)
- Implications of Slow or Floating CMOS Inputs (PDF 101 KB)
- CMOS Power Consumption and CPD Calculation (PDF 89 KB)
- Designing With Logic (PDF 186 KB)
- Live Insertion (PDF 150 KB)
- Input and Output Characteristics of Digital Integrated Circuits (PDF 1708 KB)
- Using High Speed CMOS and Advanced CMOS in Systems With Multiple Vcc (PDF 43 KB)
- HiRel Unitrode Power Management Brochure (PDF 206 KB)
- LOGIC Pocket Data Book (PDF 6001 KB)
- HiRel Unitrode Power Management Brochure (PDF 206 KB)
- Logic Cross-Reference (PDF 2938 KB)
