SN74ALS640B 八路总线收发器
SN74ALS640B 描述
These octal bus transceivers are designed for asynchronous two-way communication between data buses. These devices transmit data from the A bus to the B bus or from the B bus to the A bus, depending upon the level at the direction-control (DIR) input. The output-enable (
) input can be used to disable the device so that the buses are effectively isolated.
The -1 version of the SN74ALS640B is identical to the standard version, except that the recommended maximum IOL for the -1 version is increased to 48 mA. There is no -1 version of the SN54ALS640B.
The SN54ALS640B and SN54AS640 are characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS640B and SN74AS640 are characterized for operation from 0°C to 70°C
| SN74ALS640B | |
| Voltage Nodes(V) | 5 |
| Rating | Catalog |
| Technology Family | ALS |
SN74ALS640B 特性
- Bidirectional Bus Transceivers in High-Density 20-Pin Packages
- Inverting Logic
- Package Options Include Plastic Small-Outline (DW) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs
SN74ALS640B 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 |
| SN74ALS640BNSR | ACTIVE | 0 to 70 | 7.95 | 1ku | SO (NS) | 20 | 2000 | LARGE T&R | |
| SN74ALS640BNSRE4 | ACTIVE | 0 to 70 | 7.95 | 1ku | SO (NS) | 20 | 2000 | LARGE T&R | |
| SN74ALS640BNSRG4 | ACTIVE | 0 to 70 | 7.95 | 1ku | SO (NS) | 20 | 2000 | LARGE T&R |
SN74ALS640B 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 |
| SN74ALS640BNSR | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74ALS640BNSR | SN74ALS640BNSR |
| SN74ALS640BNSRE4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74ALS640BNSRE4 | SN74ALS640BNSRE4 |
| SN74ALS640BNSRG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74ALS640BNSRG4 | SN74ALS640BNSRG4 |
SN74ALS640B 应用技术支持与电子电路设计开发资源下载
- SN74ALS640B 数据资料 dataSheet 下载.PDF
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