These data selectors/multiplexers contain inverters and drivers to supply full binary decoding data selection to the AND-OR gates. Separate output control inputs are provided for each of the two 4-line sections.

The 3-state outputs can interface with and drive data lines of bus-organized systems. With all but one of the common outputs disabled (at a high-impedance state), the low impedance of the single enabled output drives the bus line to a high or low logic level. Each output has its own output-enable () input. The output is disabled when is high.

The SN54ALS253 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS253 and SN74AS253A are characterized for operation from 0°C to 70°C.

Select inputs A and B are common to both sections.

• 3-State Versions of the ALS153 and SN74AS153
• Permits Multiplexing From n Lines to One Line
• Performs Parallel-to-Serial Conversion
• 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
• 4:1
• Number of channels (#)
• 2
• Operating temperature range (C)
• -55 to 125
• Rating
• Military

SN54ALS253的完整型号有：85096012A、8509601EA、SNJ54ALS253FK、SNJ54ALS253J，以下是这些产品的关键参数及官网采购报价：

85096012A，工作温度：-55 to 125，封装：LCCC (FK)-20，包装数量MPQ：1个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：SNPB，TI官网85096012A的批量USD价格：22.104（1000+）

8509601EA，工作温度：-55 to 125，封装：CDIP (J)-16，包装数量MPQ：1个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：SNPB，TI官网8509601EA的批量USD价格：10.778（1000+）

SNJ54ALS253FK，工作温度：-55 to 125，封装：LCCC (FK)-20，包装数量MPQ：1个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：SNPB，TI官网SNJ54ALS253FK的批量USD价格：22.104（1000+）

SNJ54ALS253J，工作温度：-55 to 125，封装：CDIP (J)-16，包装数量MPQ：1个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：SNPB，TI官网SNJ54ALS253J的批量USD价格：10.778（1000+）