參數(shù)資料
型號: DM7474
廠商: Fairchild Semiconductor Corporation
英文描述: Dual Positive-Edge-Triggered D-Type Flip-Flops with Preset, Clear and Complementary Outputs(雙正邊緣觸發(fā)的D觸發(fā)器(帶預置、清除端和互補輸出))
中文描述: 雙上升沿觸發(fā)D型觸發(fā)器與預設,明確和互補輸出(雙正邊緣觸發(fā)的?觸發(fā)器(帶預置,清除端和互補輸出))
文件頁數(shù): 2/5頁
文件大小: 51K
代理商: DM7474
www.fairchildsemi.com
2
D
Absolute Maximum Ratings
(Note 2)
Note 2:
The “Absolute Maximum Ratings” are those values beyond which
the safety of the device cannot be guaranteed. The device should not be
operated at these limits. The parametric values defined in the Electrical
Characteristics tables are not guaranteed at the absolute maximum ratings.
The “Recommended Operating Conditions” table will define the conditions
for actual device operation.
Recommended Operating Conditions
Note 3:
The symbol (
) indicates the rising edge of the clock pulse is used for reference.
Note 4:
T
A
=
25
°
C and V
CC
=
5V.
Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Note 5:
All typicals are at V
CC
=
5V, T
A
=
25
°
C.
Note 6:
Not more than one output should be shorted at a time.
Note 7:
With all outputs open, I
CC
is measured with the Q and Q outputs HIGH in turn. At the time of measurement the clock is grounded.
Note 8:
Clear is tested with preset HIGH and preset is tested with clear HIGH.
Supply Voltage
Input Voltage
Operating Free Air Temperature Range
Storage Temperature Range
7V
5.5V
0
°
C to
+
70
°
C
65
°
C to
+
150
°
C
Symbol
V
CC
V
IH
V
IL
I
OH
I
OL
f
CLK
t
W
Parameter
Min
4.75
2
Nom
5
Max
5.25
Units
V
V
V
mA
mA
MHz
Supply Voltage
HIGH Level Input Voltage
LOW Level Input Voltage
HIGH Level Output Current
LOW Level Output Current
Clock Frequency (Note 4)
Pulse Width
(Note 4)
0.8
0.4
16
15
0
Clock HIGH
Clock LOW
Clear LOW
Preset LOW
30
37
30
30
20
5
0
ns
t
SU
t
H
T
A
Input Setup Time (Note 3)(Note 4)
Input Hold Time (Note 3)(Note 4)
Free Air Operating Temperature
ns
ns
°
C
70
Symbol
Parameter
Conditions
Min
Typ
Max
Units
(Note 5)
V
I
V
OH
Input Clamp Voltage
HIGH Level
Output Voltage
V
CC
=
Min, I
I
=
12 mA
V
CC
=
Min, I
OH
=
Max
V
IL
=
Max, V
IH
=
Min
V
CC
=
Min, I
OL
=
Max
V
IH
=
Min, V
IL
=
Max
V
CC
=
Max, V
I
=
5.5V
V
CC
=
Max
V
I
=
2.4V
1.5
V
2.4
3.4
V
V
OL
LOW Level
Output Voltage
Input Current @ Max Input Voltage
0.2
0.4
V
I
I
I
IH
1
mA
HIGH Level
Input Current
D
Clock
Clear
40
80
120
μ
A
Preset
D
Clock
40
1.6
3.2
3.2
1.6
55
30
I
IL
LOW Level
Input Current
V
CC
=
Max
V
I
=
0.4V
(Note 8)
mA
Clear
Preset
I
OS
I
CC
Short Circuit Output Current
V
CC
=
Max (Note 6)
V
CC
=
Max (Note 7)
18
mA
Supply Current
17
mA
相關PDF資料
PDF描述
DM7474M Dual Positive-Edge-Triggered D-Type Flip-Flops with Preset, Clear and Complementary Outputs
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