參數(shù)資料
型號: 74HCT374
廠商: NXP Semiconductors N.V.
英文描述: Octal D-type flip-flop; positive edge-trigger; 3-state(8路D觸發(fā)器;上升沿觸發(fā);三態(tài);)
中文描述: 八路D型觸發(fā)器,上升沿觸發(fā),三態(tài)(8路?觸發(fā)器,上升沿觸發(fā),三態(tài);)
文件頁數(shù): 6/8頁
文件大小: 60K
代理商: 74HCT374
December 1990
6
Philips Semiconductors
Product specification
Octal D-type flip-flop; positive edge-trigger;
3-state
74HC/HCT374
DC CHARACTERISTICS FOR 74HCT
For the DC characteristics see
“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
32
40
48
ns
4.5
Fig.6
t
PZH
/ t
PZL
16
30
38
45
ns
4.5
Fig.7
t
PHZ
/ t
PLZ
18
28
35
42
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
19
11
24
29
ns
4.5
Fig.6
t
su
12
7
15
18
ns
4.5
Fig.8
t
h
5
3
5
5
ns
4.5
Fig.8
f
max
26
44
21
17
MHz
4.5
Fig.6
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74HCT374D 制造商:NXP Semiconductors 功能描述:74HCT CMOS SMD 74HCT374 SOIC20