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參數(shù)資料
| 型號： | 74ALS161 |
| 廠商： | Fairchild Semiconductor Corporation |
| 元件分類： | 通用總線功能 |
| 英文描述： | Synchronous Four-Bit Counter |
| 中文描述： | 同步4位計數(shù)器 |
| 文件頁數(shù)： | 6/9頁 |
| 文件大小： | 92K |
| 代理商： | 74ALS161 |
www.fairchildsemi.com
6
D
Absolute Maximum Ratings
(Note 1)
Note 1:
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 2:
The symbol (
↑
) indicates that the rising edge of the clock is used as a reference.
Supply Voltage
Input Voltage
Operating Free Air Temperature Range
Storage Temperature Range
Typical
θ
JA
N Package
M Package
7V
7V
0
°
C to
+
70
°
C
65
°
C to
+
150
°
C
78.1
°
C/W
106.8
°
C/W
Symbol
V
CC
V
IH
V
IL
I
OH
I
OL
f
CLK
t
SETUP
Parameter
Min
4.5
2
Nom
5
Max
5.5
Units
V
V
V
mA
mA
MHz
ns
ns
Supply Voltage
HIGH Level Input Voltage
LOW Level Input Voltage
HIGH Level Output Current
LOW Level Output Current
Clock Frequency
Setup Time
0.8
0.4
8
40
0
Data; A, B, C, D
En P, En T
15
↑
(Note 2)
15
↑
(Note 2)
DM74ALS161B
DM74ALS162B
DM74ALS163B
15
↑
(Note 2)
ns
Load
15
↑
(Note 2)
15
↑
(Note 2)
ns
Clear (Only for
DM74ALS162B and
DM74ALS163B)
LOW
ns
HIGH
12
↑
(Note 2)
ns
Setup 1 (Only for 161B)
Hold Time
Clear Inactive
Data; A, B, C, D
En P, En T
10
4
3
3
4
ns
ns
ns
t
HOLD
0
↑
(Note 2)
0
↑
(Note 2)
0
↑
(Note 2)
Load
ns
Clear (Only for DM74ALS162B and
DM74ALS163B
0
↑
(Note 2)
7
ns
Hold 0 (Only for 161B)
Width of Clock
Clear
CLK HIGH or LOW
0
4
ns
ns
t
W
12.5
or Clear Pulse
DM74ALS161B CLR LOW
15
ns
Width of Load Pulse
Operating Free Air Temperature
15
0
ns
°
C
T
A
70
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74ALS161B | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:4-bit binary counter |
| 74ALS161BD | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:4-bit binary counter |
| 74ALS161BDB | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:4-bit binary counter |
| 74ALS161BN | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:4-bit binary counter |
| 74ALS163B | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:4-bit binary counter |
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