N74F259D Просмотр технического описания (PDF) - Philips Electronics
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N74F259D Datasheet PDF : 12 Pages
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Philips Semiconductors
Latch
Product specification
74F259
LOGIC SYMBOL
IEC/IEEE SYMBOL
13
1
2
3
14
E
D
A0
A1
A3
15
MR
Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7
4 5 6 7 9 10 11 12
VCC = Pin 16
GND = Pin 8
SF00824
1
0
2
3
8M
0
7
2
14
G8
13
Z9
15
Z10
9, 10D
10m 0R
9, 10D
10m 1R
9, 10D
10m 2R
9, 10D
10m 3R
9, 10D
10m 4R
9, 10D
10m 5R
9, 10D
10m 6R
9, 10D
10m 7R
4
5
6
7
9
10
11
12
SF00825
FUNCTION TABLE
MR E
INPUTS
OUTPUTS
D A0 A1 A2 Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7
OPERATING MODE
L
H
X
X
X
L
L
L
L
L
L
L
L
L Master Reset
L
L
d
L
L
L Q=d L
L
L
L
L
L
L
L
L
d
H
L
L
L Q=d L
L
L
L
L
L
L
L
d
L
H
L
L
L Q=d L
L
L
L
L Demultiplex
•
•
•
•
•
•
•
•
•
•
•
•
•
• (active-High decoder
when D=H)
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
L
L
d
H
H
H
L
L
L
L
L
L
L Q=d
H
H
X
X
X
X
q0 q1 q2 q3 q4 q5 q6 q7 Store (do nothing)
H
L
d
L
L
L Q=d q1 q2 q3 q4 q5 q6 q7
H
L
d
H
L
L
q0 Q=d q2 q3 q4 q5 q6 q7
H
L
d
L
H
L
q0 q1 Q=d q3 q4 q5 q6 q7
•
•
•
•
•
•
•
•
•
•
•
•
•
• Addressable Latch
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
H
L
d
H
H
H
q0 q1 q2 q3 q4 q5 q6 Q=d
H = High voltage level
L = Low voltage level
X = Don’t care
d = High or Low data one setup time prior to the Low-to-High Enable transition
q = Lower case letters indicate the state of the referenced output established during the last cycle in which it was addressed or cleared.
1989 Apr 11
3
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