HD74HC679 Datasheet, PDF (2/7 Pages) Hitachi Semiconductor – 12-bit Address Comparator

HD74HC679
Function Table
Inputs
G
P3 P2 P1 P0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 Output Y
L
L L L LHHHHHHHHHHHH
L
L
L L L HL HHHHHHHHHHH
L
L
L LH L L LHHHHHHHHHH
L
L
L LHHL L LHHHHHHHHH
L
L
LHL L L L L LHHHHHHHH
L
L
LHL HL L L L L HHHHHHH
L
L
LHH L L L L L L LHHHHHH
L
L
LHHHL L L L L L LHHHHH
L
L
HL L L L L L L L L L LHHHH
L
L
HL L HL L L L L L L L L HHH
L
L
HLH L L L L L L L L L L LHH
L
L
HLHHL L L L L L L L L L LH
L
L
HHL L L L L L L L L L L L L L
L
L
HH L HX XXX X XXX X XXX
H
L
HHH L XXXXXXXXXXXX
H
L
HHHHL L L L L L L L L L L L
L
L
All other combinations
H
H
Any combination
H
H : high level
L : low level
X : irrelevant
Pin Arrangement
A1 1
A2 2
A3 3
A4 4
A5 5
A6 6
A7 7
A8 8
A9 9
GND 10
(Top view)
20 VCC
19 G
18 Y
17 P3
16 P2
15 P1
14 P0
13 A12
12 A11
11 A10
Rev.2.00 Mar 30, 2006 page 2 of 6