N74F456D データシートの表示（PDF） - Philips Electronics
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N74F456D Datasheet PDF : 10 Pages
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Philips Semiconductors
Octal buffer/driver with parity, non-inverting (3-State)
Product specification
74F456
LOGIC SYMBOL (IEEE/IEC)
2K
23
3,5,6,7,8
[EVEN]
9,10,11,12
24
3
3,5,6,7,8
P3 9,10,11,12
[ODD]
1
1
2
EN4
4
Z5
5
Z6
6
Z7
8
Z8
9
Z9
10
Z10
11
Z11
12
Z12
4
22
21
20
17
16
15
14
13
SF00962
FUNCTION TABLE
INPUTS
OE0
OE1
Dn
L
L
L
L
L
H
H
X
X
X
H
X
H = High voltage level
L = Low voltage level
Z = High impedance “off” state
X = Don’t care
OUTPUTS
Qn
L
H
Z
Z
FUNCTION TABLE for PARITY OUTPUTS
INPUTS
OUTPUTS
Number of inputs, High (PI, D0 - D7)
ΣE
ΣO
Even - 0, 2, 4, 6, 8
H
L
Odd - 1, 3, 5, 7, 9
L
H
Any OEn = High
Z
Z
H = High voltage level
L = Low voltage level
Z = High impedance “off” state
X = Don’t care
2000 Aug 01
3
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