Programming instructions

74xx
 National Instruments Corporation 6-81 Multisim Component Reference Guide
6.4.13974xx54 (4-wide AND-OR-INVERTER)
4-wide AND-OR-INVERTER truth table:
6.4.14074xx55 (2-wide 4-In AND-OR-INVERTER)
AND-OR-INVERTER truth table:
6.4.14174xx573 (Octal D-type Latch)
This device contains eight D-type latches with 3-state output buffers. When the Latch Enable
(LE) input is HIGH, data on the Dn inputs enters the latches. In this condition the latches are
transparent, i.e., a latch output will change state each time its D input changes. When LE is
LOW the latches store the information that was present on the D inputs a setup time preceding
the HIGH-to-LOW transition of LE. The 3-state buffers are controlled by the Output Enable
(OE) input. When OE is LOW, the buffers are in the bi-state mode. When OE is HIGH the
INPUTS OUTPUT
ABCDEF GHY
11XXXXXX0
XX11XXXX0
XXXX11XX0
XXXXXX110
XXXXXXXX1
INPUTS OUTPUT
ABCDEF GHY
111111110
1111XXXX0
XXXX11110
XXXXXXXX1
ComponentRef.book Page 81 Thursday, December 7, 2006 10:12 AM