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 LS157 presents true data whereas the LS158 presents inverted data to minimize propagation delay time
Applications
Y Expand any data input point Y Multiplex dual data buses Y Generate four functions of two variables (one variable
is common) Y Source p.
Features
- Y Buffered inputs and outputs
Y Typical Propagation Time LS157 9 ns LS158 7 ns
Y Typical Power Dissipation LS157 49 mW LS158 24 mW
Y Alternate Military Aerospace device (54LS157 54LS158) is available Contact a National Semiconductor Sales Office Distributor for specifications
Connection Diagrams
Dual-In-Line Package
Dual-In-Line Package
TL F 6396.
- 1
Order Number 54LS157DMQB 54LS157FMQB 54LS157LMQB DM54LS157J DM54LS157W
DM74LS157M or DM74LS157N See NS Package Number E20A J16A
M16A N16.
