74LV259D Ver la hoja de datos (PDF) - Philips Electronics
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Fabricante
74LV259D Datasheet PDF : 14 Pages
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Philips Semiconductors
8-bit addressable latch
Product specification
74LV259
FUNCTION TABLE
INPUTS
OUTPUTS
OPERATING MODES
MR LE
D
A0
A1
A2
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Master reset
L
H
X
X
X
X
L
L
L
L
L
L
L
L
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
Demultiplex
(active HIGH)
decoder
(when D = H)
L
L
d
L
H
L
L
L Q=d L
L
L
L
L
L
L
d
H
H
L
L
L
L Q=d L
L
L
L
L
L
d
L
L
H
L
L
L
L Q=d L
L
L
L
L
d
H
L
H
L
L
L
L
L Q=d L
L
L
L
d
L
H
H
L
L
L
L
L
L Q=d L
L
L
d
H
H
H
L
L
L
L
L
L
L Q=d
Store (do nothing)
H
H
X
X
X
X
q0
q1
q2
q3
q4
q5
q6
q7
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
L
q0
q1
q2 Q=d q4
q5
q6
q7
H
L
d
L
L
H
q0
q1
q2
q3 Q=d q5
q6
q7
H
L
d
H
L
H
q0
q1
q2
q3
q4 Q=d q6
q7
H
L
d
L
H
H
q0
q1
q2
q3
q4
q5 Q=q q7
H
L
d
H
H
H
q0
q1
q2
q3
q4
q5
q6 Q=d
NOTES:
H = HIGH voltage level
L = LOW voltage level
X = don’t care
d = HIGH or LOW data one set-up time prior to the LOW-to-HIGH LE transition
q = lower case letters indicate the state of the referenced output established during the last cycle established during the last cycle in which
it was addressed or cleared
RECOMMENDED OPERATING CONDITIONS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
VCC
VI
VO
Tamb
DC supply voltage
Input voltage
Output voltage
Operating ambient temperature range in free air
See Note 1
See DC and AC
characteristics
1.0
3.3
3.6
V
0
–
VCC
V
0
–
VCC
V
–40
–40
+85
+125
°C
tr, tf
Input rise and fall times
VCC = 1.0V to 2.0V
–
–
500
VCC = 2.0V to 2.7V
–
–
200
ns/V
VCC = 2.7V to 3.6V
–
–
100
NOTE:
1. The LV is guaranteed to function down to VCC = 1.0V (input levels GND or VCC); DC characteristics are guaranteed from VCC = 1.2V to VCC = 5.5V.
1998 May 20
4
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