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参数资料
| 型号： | 74F191LMQB |
| 厂商： | National Semiconductor Corporation |
| 元件分类： | 通用总线功能 |
| 英文描述： | Up/Down Binary Counter with Preset and Ripple Clock |
| 中文描述： | 向上/向下二进制计数器的预置和波纹时钟 |
| 文件页数： | 4/10页 |
| 文件大小： | 187K |
| 代理商： | 74F191LMQB |
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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相关代理商/技术参数 |
参数描述 |
|---|---|
| 74F191LMX | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Up/Down Binary Counter with Preset and Ripple Clock |
| 74F191N | 制造商:North American Philips Discrete Products Div 功能描述:Counter, Up/Down, 4 Bit Binary, 16 Pin, Plastic, DIP 制造商:NXP Semiconductors 功能描述:Counter, Up/Down, 4 Bit Binary, 16 Pin, Plastic, DIP |
| 74F191PC | 功能描述:计数器移位寄存器 Up/Down Binary Ctr RoHS:否 制造商:Texas Instruments 计数器类型: 计数顺序:Serial to Serial/Parallel 电路数量:1 封装 / 箱体:SOIC-20 Wide 逻辑系列: 逻辑类型: 输入线路数量:1 输出类型:Open Drain 传播延迟时间:650 ns 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装:Reel |
| 74F191PC | 制造商:Fairchild Semiconductor Corporation 功能描述:Counter Logic IC |
| 74F191PC_Q | 功能描述:计数器 IC Up/Down Binary Ctr RoHS:否 制造商:NXP Semiconductors 计数器类型:Binary Counters 逻辑系列:74LV 位数:10 计数法: 计数顺序: 工作电源电压:1 V to 5.5 V 工作温度范围:- 40 C to + 125 C 封装 / 箱体:SOT-109 封装:Reel |
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