SN74HC161 4 位同步二进制计数器
These synchronous, presettable counters feature an internal carry look-ahead for application in high-speed counting designs. The ’HC161 devices are 4-bit binary counters. Synchronous operation is provided by having all flip-flops clocked simultaneously so that the outputs change coincident with each other when so instructed by the count-enable (ENP, ENT) inputs and internal gating. This mode of operation eliminates the output counting spikes that are normally associated with synchronous (ripple-clock) counters. A buffered clock (CLK) input triggers the four flip-flops on the rising (positive-going) edge of the clock waveform.
These counters are fully programmable; that is, they can be preset to any number between 0 and 9 or 15
| SN74HC161 | |
| Rating | Catalog |
| Technology Family | HC |
SN74HC161 特性
- Wide Operating Voltage Range of 2 V to 6 V
- Outputs Can Drive Up To 10 LSTTL Loads
- Low Power Consumption, 80-uA Max ICC
- Typical tpd = 14 ns
- ±4-mA Output Drive at 5 V
- Low Input Current of 1 uA Max
- Internal Look-Ahead for Fast Counting
- Carry Output for n-Bit Cascading
- Synchronous Counting
- Synchronously Programmable
SN74HC161 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 |
| SN74HC161D | ACTIVE | 0 to 70 | 0.40 | 1ku | SOIC (D) | 16 | 40 | TUBE | |
| SN74HC161DE4 | ACTIVE | 0 to 70 | 0.40 | 1ku | SOIC (D) | 16 | 40 | TUBE | |
| SN74HC161DG4 | ACTIVE | 0 to 70 | 0.40 | 1ku | SOIC (D) | 16 | 40 | TUBE | |
| SN74HC161DR | ACTIVE | 0 to 70 | 0.33 | 1ku | SOIC (D) | 16 | 2500 | LARGE T&R | |
| SN74HC161DRE4 | ACTIVE | 0 to 70 | 0.33 | 1ku | SOIC (D) | 16 | 2500 | LARGE T&R | |
| SN74HC161DRG4 | ACTIVE | 0 to 70 | 0.33 | 1ku | SOIC (D) | 16 | 2500 | LARGE T&R | |
| SN74HC161N | ACTIVE | 0 to 70 | 0.35 | 1ku | PDIP (N) | 16 | 25 | TUBE | |
| SN74HC161NE4 | ACTIVE | 0 to 70 | 0.35 | 1ku | PDIP (N) | 16 | 25 | TUBE |
SN74HC161 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 |
| SN74HC161D | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74HC161D | SN74HC161D |
| SN74HC161DE4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74HC161DE4 | SN74HC161DE4 |
| SN74HC161DG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74HC161DG4 | SN74HC161DG4 |
| SN74HC161DR | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74HC161DR | SN74HC161DR |
| SN74HC161DRE4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74HC161DRE4 | SN74HC161DRE4 |
| SN74HC161DRG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74HC161DRG4 | SN74HC161DRG4 |
| SN74HC161N | Pb-Free (RoHS) | CU NIPDAU | N/A for Pkg Type | SN74HC161N | SN74HC161N |
| SN74HC161NE4 | Pb-Free (RoHS) | CU NIPDAU | N/A for Pkg Type | SN74HC161NE4 | SN74HC161NE4 |
SN74HC161 应用技术支持与电子电路设计开发资源下载
- SN74HC161 数据资料 dataSheet 下载.PDF
- TI 德州仪器MSI 功能产品选型与价格 . 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)