參數(shù)資料
型號： DM74LS74
廠商： Fairchild Semiconductor Corporation
英文描述： Dual Positive-Edge-Triggered D Flip-Flops with Preset, Clear and Complementary Outputs
中文描述： 雙上升沿觸發(fā)D觸發(fā)器的預(yù)設(shè)，明確和互補(bǔ)輸出
文件頁數(shù)： 3/6頁
文件大小： 67K
代理商： DM74LS74
3
www.fairchildsemi.com
D
Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Note 7:
All typicals are at V
CC
=
5V, T
A
=
25
°
C.
Note 8:
Not more than one output should be shorted at a time, and the duration should not exceed one second. For devices, with feedback from the outputs,
where shorting the outputs to ground may cause the outputs to change logic state an equivalent test may be performed where V
O
=
2.125V with the minimum
and maximum limits reduced by one half from their stated values. This is very useful when using automatic test equipment.
Note 9:
With all outputs OPEN, I
CC
is measured with CLOCK grounded after setting the Q and Q outputs HIGH in turn.
Switching Characteristics
at V
CC
=
5V and T
A
=
25
°
C
Symbol
Parameter
Conditions
Min
Typ
Max
Units
(Note 7)
V
I
V
OH
Input Clamp Voltage
HIGH Level
Output Voltage
V
CC
=
Min, I
I
=
18 mA
V
CC
=
Min, I
OH
=
Max
V
IL
=
Max, V
IH
=
Min
V
CC
=
Min, I
OL
=
Max
V
IL
=
Max, V
IH
=
Min
I
OL
=
4 mA, V
CC
=
Min
V
CC
=
Max
V
I
=
7V
1.5
V
2.7
3.4
V
V
OL
LOW Level
Output Voltage
0.35
0.5
V
0.25
0.4
I
I
Input Current @ Max
Input Voltage
Data
Clock
Preset
0.1
0.1
0.2
mA
Clear
Data
Clock
0.2
20
20
I
IH
HIGH Level
Input Current
V
CC
=
Max
V
I
=
2.7V
μ
A
Clear
Preset
Data
40
40
0.4
0.4
0.8
0.8
100
8
I
IL
LOW Level
V
CC
=
Max
V
I
=
0.4V
Input Current
Clock
Preset
Clear
mA
I
OS
I
CC
Short Circuit Output Current
Supply Current
V
CC
=
Max (Note 8)
V
CC
=
Max (Note 9)
20
mA
mA
4
From (Input)
R
L
=
2 k
Symbol
Parameter
To (Output)
C
L
=
15 pF
Min
25
C
L
=
50 pF
Min
20
Units
Max
Max
f
MAX
t
PLH
Maximum Clock Frequency
MHz
Propagation Delay Time
LOW-to-HIGH Level Output
Clock to Q or Q
25
35
ns
t
PHL
Propagation Delay Time
HIGH-to-LOW Level Output
Propagation Delay Time
Clock to Q or Q
30
35
ns
t
PLH
Preset to Q
25
35
ns
LOW-to-HIGH Level Output
t
PHL
Propagation Delay Time
Preset to Q
30
35
ns
HIGH-to-LOW Level Output
t
PLH
Propagation Delay Time
Clear to Q
25
35
ns
LOW-to-HIGH Level Output
Propagation Delay Time
HIGH-to-LOW Level Output
t
PHL
Clear to Q
30
35
ns
相關(guān)PDF資料
PDF描述
DM74LS74AM Dual Positive-Edge-Triggered D Flip-Flops with Preset, Clear and Complementary Outputs
DM74LS74AN Dual Positive-Edge-Triggered D Flip-Flops with Preset, Clear and Complementary Outputs
DM74LS74AMX Dual D-Type Flip-Flop
DM74LS74ASJ Dual D-Type Flip-Flop
DM74LS74ASJX Dual D-Type Flip-Flop
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DM74LS74 WAF 制造商:Texas Instruments 功能描述:
DM74LS74A WAF 制造商:Fairchild Semiconductor Corporation 功能描述:
DM74LS74AM 功能描述:觸發(fā)器 Dl D-Type Flip-Flop RoHS:否 制造商:Texas Instruments 電路數(shù)量:2 邏輯系列:SN74 邏輯類型:D-Type Flip-Flop 極性:Inverting, Non-Inverting 輸入類型:CMOS 輸出類型: 傳播延遲時間:4.4 ns 高電平輸出電流:- 16 mA 低電平輸出電流:16 mA 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:X2SON-8 封裝:Reel
DM74LS74AMX 功能描述:觸發(fā)器 Dl D-Type Flip-Flop RoHS:否 制造商:Texas Instruments 電路數(shù)量:2 邏輯系列:SN74 邏輯類型:D-Type Flip-Flop 極性:Inverting, Non-Inverting 輸入類型:CMOS 輸出類型: 傳播延遲時間:4.4 ns 高電平輸出電流:- 16 mA 低電平輸出電流:16 mA 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:X2SON-8 封裝:Reel
DM74LS74AN 功能描述:觸發(fā)器 Dl D-Type Flip-Flop RoHS:否 制造商:Texas Instruments 電路數(shù)量:2 邏輯系列:SN74 邏輯類型:D-Type Flip-Flop 極性:Inverting, Non-Inverting 輸入類型:CMOS 輸出類型: 傳播延遲時間:4.4 ns 高電平輸出電流:- 16 mA 低電平輸出電流:16 mA 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:X2SON-8 封裝:Reel
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