SN74AS646 具有三态输出的八路寄存总线收发器
SN74AS646 描述
These devices consist of bus-transceiver circuits with 3-state or open-collector outputs, D-type flip-flops, and control circuitry arranged for multiplexed transmission of data directly from the data bus or from the internal storage registers. Data on the A or B bus is clocked into the registers on the low-to-high transition of the appropriate clock (CLKAB or CLKBA) input. Figure 1 illustrates the four fundamental bus-management functions that can be performed with the octal bus transceivers and registers.
Output-enable (
) and direction-control (DIR) inputs control the transceiver functions. In the transceiver mode, data present at the high-impedance port may be stored in either or both registers
|
SN74AS646 |
| Voltage Nodes(V) |
5 |
| Vcc range(V) |
4.5 to 5.5 |
| Input Level |
TTL |
| Output Level |
TTL |
| No. of Outputs |
8 |
| Static Current |
82 |
| Technology Family |
ALS |
| Rating |
Catalog |
SN74AS646 特性
- Independent Registers for A and B Buses
- Multiplexed Real-Time and Stored Data
- Choice of True or Inverting Data Paths
- Choice of 3-State or Open-Collector Outputs
- Package Options Include Plastic Small-Outline (DW) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (NT) and Ceramic (JT) 300-mil DIPs
SN74AS646 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 |
| SN74AS646DW |
ACTIVE |
-40 to 85 |
4.35 | 1ku |
SOIC (DW) | 24 |
25 | TUBE |
|
| SN74AS646DWE4 |
ACTIVE |
-40 to 85 |
4.35 | 1ku |
SOIC (DW) | 24 |
25 | TUBE |
|
| SN74AS646DWG4 |
ACTIVE |
-40 to 85 |
4.35 | 1ku |
SOIC (DW) | 24 |
25 | TUBE |
|
SN74AS646 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 |
| SN74AS646DW |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
SN74AS646DW |
SN74AS646DW |
| SN74AS646DWE4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
SN74AS646DWE4 |
SN74AS646DWE4 |
| SN74AS646DWG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
SN74AS646DWG4 |
SN74AS646DWG4 |
SN74AS646 应用技术支持与电子电路设计开发资源下载
- SN74AS646 数据资料 dataSheet 下载.PDF
- TI 德州仪器缓冲器、驱动器/收发器产品选型与价格 . xls
- CMOS 非缓冲反向器在振荡器电路中的使用 (PDF 951 KB)
- Semiconductor Packing Methodology (PDF 3005 KB)
- 逻辑产品选择指南 2006/2007 （修订版 Z）(4462KB)
- 标准线性和逻辑产品 5 分钟指南 (786KB)
- 了解和解释标准逻辑数据表
- LOGIC Pocket Data Book (PDF 6001 KB)
- HiRel Unitrode Power Management Brochure (PDF 206 KB)
- Logic Cross-Reference (PDF 2938 KB)
