參數(shù)資料
型號: 74HC534
廠商: NXP Semiconductors N.V.
英文描述: Octal D-type flip-flop; positive edge-trigger; 3-state; inverting
中文描述: 八路D型觸發(fā)器,上升沿觸發(fā),三態(tài);反相
文件頁數(shù): 7/13頁
文件大?。?/td> 83K
代理商: 74HC534
1998 Apr 10
7
Philips Semiconductors
Product specification
Octal D-type flip-flop; positive edge-trigger;
3-state; inverting
74HC/HCT534
DC CHARACTERISTICS FOR 74HCT
For the DC characteristics see chapter “74HC/HCT/HCU/HCMOS Logic Family Specifications”
Output capability: bus driver I
CC
category: MSI.
Note to HCT types
The value of additional quiescent supply current (
I
CC
) for a unit load of 1 is given in the family specifications.
To determine
I
CC
per input, multiply this value by the unit load coefficient shown in the table below.
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; t
r
= t
f
= 6 ns; C
L
= 50 pF
INPUT
UNIT LOAD COEFFICIENT
OE
CP
D
n
1.25
0.90
0.35
SYMBOL
PARAMETER
T
amb
(
°
C)
UNIT
TEST CONDITIONS
74HCT
V
CC
(V)
WAVEFORMS
+
25
40 to
+
85
40 to
+
125
min. typ.
max min. max.
min.
max.
t
PHL
/ t
PLH
propagation delay
CP to Q
n
3-state output enable time
OE to Q
n
3-state output disable
time OE to Q
n
output transition time
16
30
38
45
ns
4.5
Fig.6
t
PZH
/ t
PZL
16
30
38
45
ns
4.5
Fig.7
t
PHZ
/ t
PLZ
18
30
38
45
ns
4.5
Fig.7
t
THL
/ t
TLH
5
12
15
18
ns
4.5
Fig.6
t
W
clock pulse width
HIGH or LOW
set-up time
D
n
to CP
hold time
D
n
to CP
maximum clock pulse
frequency
23
14
29
35
ns
4.5
Fig.6
t
su
12
4
15
18
ns
4.5
Fig.8
t
h
5
1
5
5
ns
4.5
Fig.8
f
max
22
36
18
15
MHz
4.5
Fig.6
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