參數(shù)資料
型號(hào): 74HC377
廠商: NXP Semiconductors N.V.
英文描述: Octal D-type flip-flop with data enable; positive-edge trigger
中文描述: 八路D型觸發(fā)器數(shù)據(jù)使觸發(fā)器,積極邊緣觸發(fā)
文件頁數(shù): 6/7頁
文件大?。?/td> 60K
代理商: 74HC377
December 1990
6
Philips Semiconductors
Product specification
Octal D-type flip-flop with data enable;
positive-edge trigger
74HC/HCT377
DC CHARACTERISTICS FOR 74HCT
For the DC characteristics see
“74HC/HCT/HCU/HCMOS Logic Family Specifications”
.
Output capability: standard
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
E
CP
D
n
1.50
0.50
0.20
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
output transition time
17
32
40
48
ns
4.5
Fig.6
t
THL
/ t
TLH
7
15
19
22
ns
4.5
Fig.6
t
W
clock pulse width
HIGH or LOW
set-up time
D
n
to CP
set-up time
E to CP
hold time
D
n
to CP
hold time
E to CP
maximum clock pulse
frequency
20
8
25
30
ns
4.5
Fig.6
t
su
12
4
15
18
ns
4.5
Fig.7
t
su
22
12
28
33
ns
4.5
Fig.7
t
h
2
4
2
2
ns
4.5
Fig.7
t
h
3
2
3
3
ns
4.5
Fig.7
f
max
27
48
22
18
MHz
4.5
Fig.6
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