- 制造厂商：TI
- 产品类别：逻辑和电压转换
- 技术类目：缓冲器、驱动器和收发器 - 通用收发器
- 功能描述：八路总线收发器
- 点击这里打开及下载SN74ALS639A的技术文档资料
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These octal bus transceivers are designed for asynchronous two-way communication between open-collector and 3-state buses. The devices transmit data from the A bus (open-collector) to the B bus (3 state) or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable (
) input can be used to disable the device so the buses are isolated.
The -1 version of SN74ALS638A is identical to the standard version, except that the recommended maximum IOL is increased to 48 mA.
The SN74ALS638A, SN74ALS639A, SN74AS638A, and SN74AS639 are characterized for operation from 0°C to 70°C.
- Bidirectional Bus Transceivers in High-Density 20-Pin Packages
- Choice of True or Inverting Logic
- A-Bus Outputs Are Open Collector; B-Bus Outputs Are 3 State
- Package Options Include Plastic Small-Outline (DW) Packages and Standard Plastic (N) 300-mil DIPs
- IOL (Max) (mA)
- 24
- IOH (Max) (mA)
- -15
- Technology Family
- ALS
- Rating
- Catalog
- Operating temperature range (C)
- 0 to 70
SN74ALS639A的完整型号有：SN74ALS639ADW、SN74ALS639AN，以下是这些产品的关键参数及官网采购报价：
SN74ALS639ADW，工作温度：0 to 70，封装：SOIC (DW)-20，包装数量MPQ：25个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网SN74ALS639ADW的批量USD价格：2.229（1000+）
SN74ALS639AN，工作温度：0 to 70，封装：PDIP (N)-20，包装数量MPQ：20个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：NIPDAU，TI官网SN74ALS639AN的批量USD价格：2.563（1000+）
14-24-LOGIC-EVM — 支持 14 到 24 引脚 PW、DB、D、DW、NS、DYY 和 DGV 封装的通用逻辑 EVM
该 EVM 设计用于支持采用 14 至 24 引脚 D、DW、DB、NS、PW、DYY 或 DGV 封装的任何逻辑器件。
