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參數(shù)資料
| 型號(hào)： | SN54HC174 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Hex Positive-Edge-Triggered D-Type Flip-Flops With Clear(六上升沿D觸發(fā)器(有清除端)) |
| 中文描述： | 六角上升沿觸發(fā)D型觸發(fā)器與清除正反器（六上升沿?觸發(fā)器（有清除端）） |
| 文件頁數(shù)： | 4/6頁 |
| 文件大?。?/td> | 127K |
| 代理商： | SN54HC174 |
SN54HC174, SN74HC174
HEX D-TYPE FLIP-FLOPS
WITH CLEAR
SCLS119A – DECEMBER 1982 – REVISED JANUARY 1996
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
timing requirements over recommended operating free-air temperature range (unless otherwise
noted)
VCC
TA = 25°C
SN54HC174
SN74HC174
UNIT
VCC
MIN
MAX
MIN
MAX
MIN
MAX
UNIT
f
Cl
k f
2 V
0
6
0
4.2
0
5
MH
fclock
Clock frequency
4.5 V
0
31
0
21
0
25
MHz
clock
qy
6 V
0
36
0
25
0
29
Pl
d
i
CLR l
2 V
80
120
100
Pl
d
i
CLR low
4.5 V
16
24
20
tw
Pulse duration
6 V
14
20
17
ns
tw
Pulse duration
CLK hi h
l
2 V
80
120
100
ns
CLK high or low
4.5 V
16
24
20
g
6 V
14
20
17
S
i
b f
CLK
↑
D
2 V
100
150
125
S
i
b f
CLK
↑
Data
4.5 V
20
30
25
tsu
Setup time before CLK
↑
6 V
17
25
21
ns
tsu
Setup time before CLK
↑
CLR ii
2 V
100
150
125
ns
CLR inactive
4.5 V
20
30
25
6 V
17
25
21
H ld i
d
f
CLK
↑
2 V
0
th
Hold time, data after CLK
↑
4.5 V
0
ns
h
6 V
0
switching characteristics over recommended operating free-air temperature range, CL = 50 pF
(unless otherwise noted) (see Figure 1)
PARAMETER
FROM
TO
VCC
TA = 25°C
SN54HC174
SN74HC174
UNIT
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNIT
f
2 V
6
9
4.2
5
MH
fmax
4.5 V
31
44
21
25
MHz
max
6 V
36
50
25
29
CLR
A
2 V
58
160
240
200
CLR
Any
4.5 V
17
32
48
40
tpd
y
6 V
14
27
41
34
ns
tpd
CLK
A
2 V
58
160
240
200
ns
CLK
Any
4.5 V
17
32
48
40
y
6 V
14
27
41
34
A
2 V
38
75
110
90
tt
Any
4.5 V
8
15
22
19
ns
t
y
6 V
6
13
19
16
operating characteristics, TA = 25°C
PARAMETER
TEST CONDITIONS
TYP
UNIT
Cpd
Power dissipation capacitance per flip-flop
No load
27
pF
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