DM54150

Features:

* 150 selects one-of-sixteen data lines
* 151A selects one-of-eight data lines
* Performs parallel-to-serial conversion
* Permits multiplexing from N lines to one line
* Also for use as Boolean function generator
* Typical average propagation delay time, data input to W
   output
   150 11 ns
   151A 9 ns
* Typical power dissipation
   150 200 mW
   151A 135 mW
* Alternate Military/Aerospace device (54150, 54151A) is
   available. Contact a National Semiconductor Sales Office/
   Distributor for specifications.


Specifications

Supply Voltage                                                         7V
Input Voltage                                                        5.5V
Operating Free Air Temperature Range
DM54 and 54                                       -55 to +125
DM74                                                        0 to +70
Storage Temperature Range               -65 to +150


Description

These data selectors/multiplexers (DM54150) contain full on-chip decoding to select the desired data source. The DM54150 selects one-of-sixteen data sources; the 151A selects one-of-eight data sources. The DM54150 and 151A have a strobe input which must be at a low logic level to enable these devices. A high level at the strobe forces the W output high and the Y output (as applicable) low.

The 151A features complementary W and Y outputs, whereas the DM54150 has an inverted (W) output only.

The 151A incorporates address buffers which have symmetrical propagation delay times through the complementary paths. This reduces the possibility of transients occurring at the output(s) due to changes made at the select inputs, even when the 151A outputs are enabled (i.e., strobe low).