DM74AS157 • DM74AS158 Quad 1 of 2 Line Data Selector/Multiplexer
April 1984 Revised March 2000
DM74AS157 • DM74AS158 Q...
DM74AS157 DM74AS158 Quad 1 of 2 Line Data Selector/Multiplexer
April 1984 Revised March 2000
DM74AS157 DM74AS158 Quad 1 of 2 Line Data Selector/Multiplexer
General Description
These data selectors/multiplexers contain inverters and drivers to supply full on-chip data selection to the four output gates. A separate STROBE input is provided. A 4-bit word is selected from one of two sources and is routed to the four outputs. The AS157 presents true data whereas the AS158 presents inverted data to minimize propagation delay time.
Features
s Switching specifications at 50 pF
s Switching specifications guaranteed over full temperature and VCC range
s Advanced oxide-isolated, ion-implanted
Schottky TTL process
s Functionally and pin for pin compatible with
Schottky, low power
Schottky, and advanced low power
Schottky TTL counterpart
s Improved AC performance over
Schottky, low power
Schottky, and advanced low power
Schottky counterparts
s Expand any data input point s Multiplex dua...