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參數(shù)資料
| 型號(hào)： | 74F191PCX |
| 廠商： | National Semiconductor Corporation |
| 元件分類(lèi)： | 通用總線功能 |
| 英文描述： | Up/Down Binary Counter with Preset and Ripple Clock |
| 中文描述： | 向上/向下二進(jìn)制計(jì)數(shù)器的預(yù)置和波紋時(shí)鐘 |
| 文件頁(yè)數(shù)： | 4/10頁(yè) |
| 文件大?。?/td> | 187K |
| 代理商： | 74F191PCX |
Absolute Maximum Ratings
(Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Storage Temperature
b
65
§
C to
a
150
§
C
b
55
§
C to
a
125
§
C
b
55
§
C to
a
175
§
C
b
55
§
C to
a
150
§
C
Ambient Temperature under Bias
Junction Temperature under Bias
Plastic
V
CC
Pin Potential to
Ground Pin
b
0.5V to
a
7.0V
b
0.5V to
a
7.0V
b
30 mA to
a
5.0 mA
Input Voltage (Note 2)
Input Current (Note 2)
Voltage Applied to Output
in HIGH State (with V
CC
e
0V)
Standard Output
TRI-STATE
é
Output
Current Applied to Output
in LOW State (Max)
b
0.5V to V
CC
b
0.5V to
a
5.5V
twice the rated I
OL
(mA)
Note 1:
Absolute maximum ratings are values beyond which the device may
be damaged or have its useful life impaired. Functional operation under
these conditions is not implied.
Note 2:
Either voltage limit or current limit is sufficient to protect inputs.
Recommended Operating
Conditions
Free Air Ambient Temperature
Military
Commercial
b
55
§
C to
a
125
§
C
0
§
C to
a
70
§
C
Supply Voltage
Military
Commercial
a
4.5V to
a
5.5V
a
4.5V to
a
5.5V
DC Electrical Characteristics
Symbol
Parameter
54F/74F
Units
V
CC
Conditions
Min
Typ
Max
V
IH
Input HIGH Voltage
2.0
V
Recognized as a HIGH Signal
V
IL
Input LOW Voltage
0.8
V
Recognized as a LOW Signal
V
CD
Input Clamp Diode Voltage
b
1.2
V
Min
I
IN
e b
18 mA
V
OH
Output HIGH
Voltage
54F 10% V
CC
74F 10% V
CC
74F 5% V
CC
2.5
2.5
2.7
I
OH
e b
1 mA
I
OH
e b
1 mA
I
OH
e b
1 mA
V
Min
V
OL
Output LOW
Voltage
54F 10% V
CC
74F 10% V
CC
0.5
0.5
V
Min
I
OL
e
20 mA
I
OL
e
20 mA
I
IH
Input HIGH
Current
54F
74F
20.0
5.0
m
A
Max
V
IN
e
2.7V
I
BVI
Input HIGH Current
Breakdown Test
54F
74F
100
7.0
m
A
Max
V
IN
e
7.0V
I
CEX
Output HIGH
Leakage Current
54F
74F
250
50
m
A
Max
V
OUT
e
V
CC
V
ID
Input Leakage
Test
74F
4.75
V
0.0
I
ID
e
1.9
m
A,
All Other Pins Grounded
I
OD
Output Leakage
Circuit Current
74F
3.75
m
A
0.0
V
IOD
e
150 mV
All Other Pins Grounded
I
IL
Input LOW Current
b
0.6
b
1.8
mA
Max
V
IN
e
0.5V (except CE)
V
IN
e
0.5V (CE)
I
OS
Output Short-Circuit Current
b
60
b
150
mA
Max
V
OUT
e
0V
I
CC
Power Supply Current
38
55
mA
Max
4
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|---|---|
| 74F191PMQB | Up/Down Binary Counter with Preset and Ripple Clock |
| 74F191PMX | Up/Down Binary Counter with Preset and Ripple Clock |
| 74F191SCQB | Up/Down Binary Counter with Preset and Ripple Clock |
| 74F191SJCQB | Up/Down Binary Counter with Preset and Ripple Clock |
| 74F191SJCX | Up/Down Binary Counter with Preset and Ripple Clock |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74F191PMQB | 制造商:NSC 制造商全稱(chēng):National Semiconductor 功能描述:Up/Down Binary Counter with Preset and Ripple Clock |
| 74F191PMX | 制造商:NSC 制造商全稱(chēng):National Semiconductor 功能描述:Up/Down Binary Counter with Preset and Ripple Clock |
| 74F191SC | 功能描述:計(jì)數(shù)器移位寄存器 Up/Down Binary Ctr RoHS:否 制造商:Texas Instruments 計(jì)數(shù)器類(lèi)型: 計(jì)數(shù)順序:Serial to Serial/Parallel 電路數(shù)量:1 封裝 / 箱體:SOIC-20 Wide 邏輯系列: 邏輯類(lèi)型: 輸入線路數(shù)量:1 輸出類(lèi)型:Open Drain 傳播延遲時(shí)間:650 ns 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝:Reel |
| 74F191SCQB | 制造商:NSC 制造商全稱(chēng):National Semiconductor 功能描述:Up/Down Binary Counter with Preset and Ripple Clock |
| 74F191SCX | 功能描述:計(jì)數(shù)器移位寄存器 Up/Down Binary Ctr RoHS:否 制造商:Texas Instruments 計(jì)數(shù)器類(lèi)型: 計(jì)數(shù)順序:Serial to Serial/Parallel 電路數(shù)量:1 封裝 / 箱體:SOIC-20 Wide 邏輯系列: 邏輯類(lèi)型: 輸入線路數(shù)量:1 輸出類(lèi)型:Open Drain 傳播延遲時(shí)間:650 ns 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝:Reel |
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