- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄370121 > 74191 (National Semiconductor Corporation) Synchronous Up/Down 4-Bit Binary Counter with Mode Control PDF資料下載
參數(shù)資料
| 型號： | 74191 |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | 通用總線功能 |
| 英文描述： | Synchronous Up/Down 4-Bit Binary Counter with Mode Control |
| 中文描述： | 同步向上/向下4位二進制計數(shù)器的模式控制 |
| 文件頁數(shù)： | 2/6頁 |
| 文件大?。?/td> | 129K |
| 代理商： | 74191 |
Absolute Maximum Ratings
(Note)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Supply Voltage
7V
Input Voltage
5.5V
Operating Free Air Temperature Range
DM54 and 54
DM74
b
55
§
C to
a
125
§
C
0
§
C to
a
70
§
C
b
65
§
C to
a
150
§
C
Storage Temperature Range
Note: The ‘‘Absolute Maximum Ratings’’ are those values
beyond which the safety of the device cannot be guaran-
teed. The device should not be operated at these limits. The
parametric values defined in the ‘‘Electrical Characteristics’’
table are not guaranteed at the absolute maximum ratings.
The ‘‘Recommended Operating Conditions’’ table will define
the conditions for actual device operation.
Recommended Operating Conditions
Symbol
Parameter
DM54191
DM74191
Units
Min
Nom
Max
Min
Nom
Max
V
CC
Supply Voltage
4.5
5
5.5
4.75
5
5.25
V
V
IH
High Level Input Voltage
2
2
V
V
IL
Low Level Input Voltage
0.8
0.8
V
I
OH
High Level Output Current
b
0.8
b
0.8
mA
I
OL
Low Level Output Current
16
16
mA
f
CLK
Clock Frequency (Note 4)
0
20
0
20
MHz
t
W
Pulse Width
(Note 4)
Clock
25
25
ns
Load
35
35
t
SU
Data Setup Time (Note 4)
28
28
ns
t
H
Hold Time (Note 4)
0
0
ns
t
REL
Load Release Time (Note 4)
30
30
ns
T
A
Free Air Operating Temperature
b
55
125
0
70
§
C
Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
(Note 1)
V
I
Input Clamp Voltage
V
CC
e
Min, I
I
e b
12 mA
b
1.5
V
V
OH
High Level Output
Voltage
V
CC
e
Min, I
OH
e
Max
V
IL
e
Max, V
IH
e
Min
2.4
3.4
V
V
OL
Low Level Output
Voltage
V
CC
e
Min, I
OL
e
Max
V
IH
e
Min, V
IL
e
Max
0.2
0.4
V
I
I
Input Current
@
Max
Input Voltage
V
CC
e
Max, V
I
e
5.5V
1
mA
I
IH
High Level Input
Current
V
CC
e
Max
V
I
e
2.4V
Enable
120
m
A
Others
40
I
IL
Low Level Input
Current
V
CC
e
Max
V
I
e
0.4V
Enable
b
4.8
mA
Others
b
1.6
I
OS
Short Circuit
Output Current
V
CC
e
Max
(Note 2)
DM54
b
20
b
65
mA
DM74
b
18
b
65
I
CC
Supply Current
V
CC
e
Max
(Note 3)
DM54
65
99
mA
DM74
65
105
Note 1:
All typicals are at V
CC
e
5V, T
A
e
25
§
C.
Note 2:
Not more than one output should be shorted at a time.
Note 3:
I
CC
is measured with all inputs grounded and all outputs open.
Note 4:
T
A
e
25
§
C and V
CC
e
5V.
2
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 74191 | Synchronous 4-Bit Up/Down Counter with Mode Control |
| 74195 | universal 4-bit shift reguster |
| 74195DC | Precision, Micropower Operational Amplifier; Package: SOIC; No of Pins: 8; Temperature Range: Industrial |
| 74195FC | UNIVERSAL 4-BIT SHIFT REGISTER |
| 74195PC | UNIVERSAL 4-BIT SHIFT REGISTER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74191 WAF | 制造商:Texas Instruments 功能描述: |
| 74191-0002 | 功能描述:標準卡緣連接器 CARD EDGE CONN 300P micrprocessor RoHS:否 制造商:3M Electronic Solutions Division 系列:SPD08 產(chǎn)品類型:Contacts 位置/觸點數(shù)量:60 安裝角:Straight 電路板厚度: 安裝風格:SMD/SMT 節(jié)距:8 mm 外殼材料:Liquid Crystal Polymer (LCP) 觸點材料:Copper Alloy 觸點電鍍:Gold |
| 74191-0003 | 制造商:MOLEX 制造商全稱:Molex Electronics Ltd. 功能描述:High Speed Edgecard Connector in Ground Signal Format for High Performance Applications |
| 74191-0004 | 制造商:MOLEX 制造商全稱:Molex Electronics Ltd. 功能描述:High Speed Edgecard Connector in Ground Signal Format for High Performance Applications |
| 74191-0005 | 制造商:MOLEX 制造商全稱:Molex Electronics Ltd. 功能描述:High Speed Edgecard Connector in Ground Signal Format for High Performance Applications |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。