- 制造厂商:TI
- 产品类别:逻辑和电压转换
- 技术类目:专用逻辑 IC - 数字多路复用器和编码器
- 功能描述:具有三态输出的四路 2 线路到 1 线路数据选择器/多路复用器
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These data selectors/multiplexers are designed to multiplex signals from 4-bit data sources to 4-output data lines in bus-organized systems. The 3-state outputs do not load the data lines when the output-enable () input is at a high logic level.
The SN54ALS257A and SN54ALS258A are characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS257A, SN74ALS258A, SN74AS257, and SN74AS258 are characterized for operation from 0°C to 70°C.
- 3-State Outputs Interface Directly With System Bus
- Provide Bus Interface From Multiple Sources in High-Performance Systems
- Package Options Include Plastic Small-Outline (D) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs
- Technology Family
- ALS
- Function
- Digital Multiplexer
- Configuration
- 2:1
- Number of channels (#)
- 4
- Operating temperature range (C)
- 0 to 70
- Rating
- Catalog
SN74ALS257A的完整型号有:SN74ALS257AD、SN74ALS257ADR、SN74ALS257AN、SN74ALS257ANSR,以下是这些产品的关键参数及官网采购报价:
SN74ALS257AD,工作温度:0 to 70,封装:SOIC (D)-16,包装数量MPQ:40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SN74ALS257AD的批量USD价格:.514(1000+)
SN74ALS257ADR,工作温度:0 to 70,封装:SOIC (D)-16,包装数量MPQ:2500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SN74ALS257ADR的批量USD价格:.428(1000+)
SN74ALS257AN,工作温度:0 to 70,封装:PDIP (N)-16,包装数量MPQ:25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SN74ALS257AN的批量USD价格:.492(1000+)
SN74ALS257ANSR,工作温度:0 to 70,封装:SO (NS)-16,包装数量MPQ:2000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SN74ALS257ANSR的批量USD价格:.492(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。