These dual 4-bit D-type latches feature 3-state outputs designed specifically for bus driving. These devices are particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.

The dual 4-bit latches are transparent D-type latches. While the latch-enable (LE) input is high, the Q outputs follow the data (D) inputs in true form, according to the function table. When LE is low, the outputs are latched. When the clear () input goes low, the Q outputs go low independently of LE. The outputs are in the high-impedance state when the output-enable () input is at a high logic level.

The SN54ALS873B and SN54AS873A are characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS873B and SN74AS873A are characterized for operation from 0°C to 70°C.

• 3-State Buffer-Type Outputs Drive Bus Lines Directly
• Bus-Structured Pinout
• Package Options Include Plastic Small-Outline (DW) Packages, Ceramic Chip Carriers (FK), and Plastic (NT) and Ceramic (JT) DIPs

• Number of channels (#)
• 8
• Technology Family
• ALS
• Supply voltage (Min) (V)
• 4.5
• Supply voltage (Max) (V)
• 5.5
• Input type
• Bipolar
• Output type
• 3-State
• Clock Frequency (Max) (MHz)
• 75
• IOL (Max) (mA)
• 24
• IOH (Max) (mA)
• -2.6
• ICC (Max) (uA)
• 32000
• Features
• High speed (tpd 10-50ns), Flow-through pinout

SN74ALS873B的完整型号有：SN74ALS873BDW、SN74ALS873BDWR，以下是这些产品的关键参数及官网采购报价：

SN74ALS873BDW，工作温度：0 to 70，封装：SOIC (DW)-24，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SN74ALS873BDW的批量USD价格：2.869（1000+）

SN74ALS873BDWR，工作温度：0 to 70，封装：SOIC (DW)-24，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SN74ALS873BDWR的批量USD价格：2.391（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。