74HC259DB View Datasheet(PDF) - Philips Electronics
Part Name
Description
Manufacturer
74HC259DB Datasheet PDF : 11 Pages
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Philips Semiconductors
8-bit addressable latch
Product specification
74HC/HCT259
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; tr = tf = 6 ns; CL = 50 pF
Tamb (°C)
TEST CONDITIONS
SYMBOL PARAMETER
min.
+25
typ.
74HCT
−40 TO +85
max. min. max.
−40 TO +125
UNIT
VCC
(V)
WAVEFORMS
min. max.
tPHL/ tPLH
tPHL/ tPLH
tPHL/ tPLH
tPHL
tTHL/ tTLH
propagation delay
D to Qn
propagation delay
An to Qn
propagation delay
LE to Qn
propagation delay
MR to Qn
output transition time
23 39
49
25 41
51
22 38
48
23 39
49
7 15
19
59 ns 4.5 Fig.7
62 ns 4.5 Fig.8
57 ns 4.5 Fig.6
59 ns 4.5 Fig.9
22 ns 4.5 Figs 6 and 7
tW
LE pulse width
LOW
tW
MR pulse width
LOW
tsu
set-up time
D to LE
tsu
set-up time
An to LE
th
hold time
D to LE
th
hold time
An to LE
19 11
18 10
17 10
17 10
0 −8
0 −4
24
29
23
27
21
26
21
26
0
0
0
0
ns 4.5 Fig.6
ns 4.5 Fig.9
ns 4.5 Fig.10
ns 4.5 Fig.11
ns 4.5 Fig.10
ns 4.5 Fig.11
December 1990
9
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