Specifications

Logic Devices 107
Multiplexer Pin Variations
A number of variations in multiplexer logic are possible with this primitive
type, depending on which input and output pins are included. The follow-
ing table summarizes the possible variations. Samples are shown with M=1
and N=2, but any combination of M and N can be used within the maxi-
mum pin limit of 800.
* If there are fewer than 2
N
inputs per section, there can be no enable input.
 Specific pin order requirements for the multiplexer type are given in
Appendix A, Primitive Device Pin Summary.
Number of
Sections
Number of
Inputs/Section
Number of
Select Inputs
Number of
Enable Inputs
Sample
Symbol
M
2
N
N0
M
2
N
N1
M
2
N–1
+1 .. 2
N
N0*
LW Reference.bk Page 107 Monday, December 15, 2003 5:59 PM