74lv259 NXP Semiconductors, 74lv259 Datasheet - Page 4

• Manufacturer Part Number: 74lv259
• Description: 8-bit Addressable Latch
• Manufacturer: NXP Semiconductors

NXP Semiconductors
Table 2.
6. Functional description
Table 3.
H = HIGH voltage level; L = LOW voltage level
Table 4.
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<n> = state of the output established during the last cycle in which it was addressed or cleared
74LV259_3
Product data sheet
Symbol
D
LE
MR
V
LE
L
H
L
H
Operating modes
master reset
demultiplex (active
HIGH) decoder
(when D = H)
store (do nothing)
addressable latch
CC
Pin description
Mode select table
Function table
Pin
13
14
15
16
Input
MR
L
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
H
…continued
LE
H
L
L
L
L
L
L
L
L
H
L
L
L
L
L
L
L
L
D
X
d
d
d
d
d
d
d
d
X
d
d
d
d
d
d
d
H
A0
X
L
H
L
H
L
H
L
H
X
L
H
L
H
L
H
L
H
MR
H
H
L
L
A1
X
L
L
H
H
L
L
H
H
X
L
L
H
H
L
L
H
H
Rev. 03 — 2 January 2008
A2
X
L
L
L
L
H
H
H
H
X
L
L
L
L
H
H
H
H
Description
data input
latch enable input (active LOW)
conditional reset input (active LOW)
supply voltage
Output
Q0
L
Q = d
L
L
L
L
L
L
L
q0
Q = d
q0
q0
q0
q0
q0
q0
q0
Q1
L
L
Q = d
L
L
L
L
L
L
q1
q1
Q = d
q1
q1
q1
q1
q1
q1
Q2
L
L
L
Q = d
L
L
L
L
L
q2
q2
q2
Q = d
q2
q2
q2
q2
q2
Mode
addressable latch
memory
active HIGH 8-channel demultiplexer
reset
Q3
L
L
L
L
Q = d
L
L
L
L
q3
q3
q3
q3
Q = d
q3
q3
q3
q3
Q4
L
L
L
L
L
Q = d
L
L
L
q4
q4
q4
q4
q4
Q = d
q4
q4
q4
8-bit addressable latch
Q5
L
L
L
L
L
L
Q = d
L
L
q5
q5
q5
q5
q5
q5
Q = d q6
q5
q5
© NXP B.V. 2008. All rights reserved.
74LV259
Q6
L
L
L
L
L
L
Q = d L
L
q6
q6
q6
q6
q6
q6
Q = d q7
q6
Q7
L
L
L
L
L
L
L
Q = d
q7
q7
q7
q7
q7
q7
q7
Q = d
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