The 74AS250 devices provide full binary decoding to select 1-of-16 data inputs or use sources as an input with an inverting W\ output. The selected sources are buffered with symmetrical propagation delay times. This reduces the possibility of transients occurring at the output.
A buffered output-enable (OE) input can be used for n-line to 1-line cascading. Taking OE high places the output in the high-impedance state. In the high-impedance state, the output neither loads nor drives the bus lines significantly. OE does not affect the internal operations of the data selector/multiplexer. New data can be set up while the outputs are disabled. The 74AS250 is characterized for operation from 0°C to 70°C.
4-Line to 1-Line Multiplexers That Can Select 1-of-16 Data Inputs
Buffered 3-State Bus Driver Inputs Permit Multiplexing From n Lines to One Line
Boolean Function Generator
Data Source Selector
24 pin DIP. Actual brand may vary from picture.