User`s guide

Functional Behavior 7
-3
Functional
Behavior
A digital device model’s functional behavior is defined by one
or more interconnected digital primitives. Typically, a logic
diagram in a data book can be implemented directly using the
primitives provided by PSpice A/D. Table 7-1
provides a
summary of the digital primitives.
Table 7-1
Digital Primitives Summary
Type Description
Standard Gates
BUF
INV
AND
NAND
OR
NOR
XOR
NXOR
BUFA
INVA
ANDA
NANDA
ORA
NORA
XORA
NXORA
AO
OA
AOI
OA
buffer
inverter
AND gate
NAND gate
OR gate
NOR gate
exclusive OR gate
exclusive NOR gate
buffer array
inverter array
AND gate array
NAND gate array
OR gate array
NOR gate array
exclusive OR gate array
exclusive NOR gate array
AND-OR compound gate
OR-AND compound gate
AND-NOR compound gate
OR-NAND compound gate