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Número de pieza
componentes Descripción
HD74HC299 Ver la hoja de datos (PDF) - Hitachi -> Renesas Electronics
Número de pieza
componentes Descripción
Fabricante
HD74HC299
8-bit Universal Shift/Storage Register (with 3-state outputs)
Hitachi -> Renesas Electronics
HD74HC299 Datasheet PDF : 11 Pages
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HD74HC299
AC Characteristics
(C
L
= 50 pF, Input t
r
= t
f
= 6 ns)
Ta = 25
°
C
Ta = –40 to
+85
°
C
Item
Maximum clock
frequency
Symbol
f
max
V
CC
(V)
2.0
4.5
Min Typ Max Min
——5 —
— — 25 —
Max Unit Test Conditions
4
MHz
20
6.0
— — 29 — 23
Propagation delay t
PLH
time
t
PHL
2.0
— — 190 — 240 ns Clock to Q
A
’ or Q
H
’
4.5
— — 38 — 48
6.0
— — 32 — 41
t
PHL
2.0
— — 220 — 275 ns Clear to Q
A
’ or Q
H
’
4.5
— — 44 — 55
6.0
— — 37 — 47
t
PLH
2.0
— — 190 — 240 ns Clock to Q
A
– Q
H
t
PHL
4.5
— — 38 — 48
6.0
— — 32 — 41
t
PHL
2.0
— — 220 — 275 ns Clear to Q
A
– Q
H
4.5
— — 44 — 55
6.0
— — 37 — 47
Output enable
t
ZH
time
t
ZL
2.0
— — 160 — 200 ns
4.5
— — 32 — 40
6.0
— — 27 — 34
Output disable
t
HZ
time
t
LZ
2.0
— — 160 — 200 ns
4.5
— — 32 — 40
6.0
— — 27 — 34
Setup time
t
su
2.0
100 — — 125 — ns Select
4.5
20 — — 25 —
6.0
17 — — 21 —
Hold time
t
h
2.0
5 —— 5
— ns Select
4.5
5 —— 5
—
6.0
5 —— 5
—
Removal time
t
rem
2.0
50 — — 65 — ns Clear
4.5
10 — — 13 —
6.0
9 — — 11 —
Pulse width
t
w
2.0
80 — — 100 — ns
4.5
16 — — 20 —
6.0
14 — — 17 —
6
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