SN74AS298A 具有存储器的四路 2 输入 多路复用器
The SN74AS298A is a quadruple 2-input multiplexer with storage that provides essentially the equivalent functional capabilities of two separate MSI functions (SN74AS157 and 'AS175A) in a 16-pin package.
When the word-select (WS) input is low, word 1 (A1, B1, C1, D1) is applied to the flip-flops. A high input to WS causes the selection of word 2 (A2, B2, C2, D2). The selected word is clocked to the output terminals on the negative-going edge of the clock pulse.
The SN74AS298A is characterized for operation from 0°C to 70°C.
a1, a2, etc. = the level of steady-state input at A1, A2, etc.
QA0, QB0, etc. = the level of QA, QB, etc. entered on the most recent transition of CLK
| SN74AS298A | |
| Rating | Catalog |
| Technology Family | AS |
SN74AS298A 特性
- Selects One of Two 4-Bit Data Sources and Synchronously Stores Data With System Clock
- Applications:
- Dual Source for Operands and Constants in Arithmetic Processor; Can Release Processor Register Files for Acquiring New Data
- Implements Separate Registers Capable of Parallel Exchange of Contents, Yet Retains External Load Capability
- Has Universal-Type Register for Implementing Various Shift Patterns, Including Compound Left-Right Capability
- Package Options Include Plastic Small-Outline (D) Packages and Standard Plastic (N) 300-mil DIPs
SN74AS298A 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 |
| SN74AS298AD | ACTIVE | 0 to 70 | 0.95 | 1ku | SOIC (D) | 16 | 40 | TUBE | |
| SN74AS298ADE4 | ACTIVE | 0 to 70 | 0.95 | 1ku | SOIC (D) | 16 | 40 | TUBE | |
| SN74AS298ADG4 | ACTIVE | 0 to 70 | 0.95 | 1ku | SOIC (D) | 16 | 40 | TUBE | |
| SN74AS298ADR | ACTIVE | 0 to 70 | 0.80 | 1ku | SOIC (D) | 16 | 2500 | LARGE T&R | |
| SN74AS298ADRE4 | ACTIVE | 0 to 70 | 0.80 | 1ku | SOIC (D) | 16 | 2500 | LARGE T&R | |
| SN74AS298ADRG4 | ACTIVE | 0 to 70 | 0.80 | 1ku | SOIC (D) | 16 | 2500 | LARGE T&R | |
| SN74AS298AN | ACTIVE | 0 to 70 | 0.90 | 1ku | PDIP (N) | 16 | 25 | TUBE | |
| SN74AS298ANE4 | ACTIVE | 0 to 70 | 0.90 | 1ku | PDIP (N) | 16 | 25 | TUBE |
SN74AS298A 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 |
| SN74AS298AD | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74AS298AD | SN74AS298AD |
| SN74AS298ADE4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74AS298ADE4 | SN74AS298ADE4 |
| SN74AS298ADG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74AS298ADG4 | SN74AS298ADG4 |
| SN74AS298ADR | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74AS298ADR | SN74AS298ADR |
| SN74AS298ADRE4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74AS298ADRE4 | SN74AS298ADRE4 |
| SN74AS298ADRG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74AS298ADRG4 | SN74AS298ADRG4 |
| SN74AS298AN | Pb-Free (RoHS) | CU NIPDAU | N/A for Pkg Type | SN74AS298AN | SN74AS298AN |
| SN74AS298ANE4 | Pb-Free (RoHS) | CU NIPDAU | N/A for Pkg Type | SN74AS298ANE4 | SN74AS298ANE4 |
SN74AS298A 应用技术支持与电子电路设计开发资源下载
- SN74AS298A 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)