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參數(shù)資料
| 型號： | 74F191DMX |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | 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)制計數(shù)器的預(yù)置和波紋時鐘 |
| 文件頁數(shù)： | 6/10頁 |
| 文件大?。?/td> | 187K |
| 代理商： | 74F191DMX |
AC Operating Requirements
74F
54F
74F
Symbol
Parameter
T
A
e a
25
§
C
V
CC
e a
5.0V
T
A
, V
CC
e
Mil
T
A
, V
CC
e
Com
Units
Min
Max
Min
Max
Min
Max
t
s
(H)
t
s
(L)
Setup Time, HIGH or LOW
P
n
to PL
4.5
4.5
6.0
6.0
5.0
5.0
ns
t
h
(H)
t
h
(L)
Hold Time, HIGH or LOW
P
n
to PL
2.0
2.0
2.0
2.0
2.0
2.0
t
s
(L)
Setup Time LOW
CE to CP
10.0
10.5
10.0
ns
t
h
(L)
Hold Time LOW
CE to CP
0
0
0
t
s
(H)
t
s
(L)
Setup Time, HIGH or LOW
U/D to CP
12.0
12.0
12.0
12.0
12.0
12.0
ns
t
h
(H)
t
h
(L)
Hold Time, HIGH or LOW
U/D to CP
0
0
0
0
0
0
t
w
(L)
PL Pulse Width LOW
6.0
8.5
6.0
ns
t
w
(L)
CP Pulse Width LOW
5.0
7.0
5.0
ns
t
rec
Recovery Time
PL to CP
6.0
7.5
6.0
ns
Ordering Information
The device number is used to form part of a simplified purchasing code where the package type and temperature range are
defined as follows:
74F
191
S
C
X
Temperature Range Family
74F
e
Commercial
54F
e
Military
Special Variations
X
e
Devices shipped in 13
×
reels
QB
e
Military grade with environmental
and burn-in processing shipped
in tubes
Device Type
Package Code
P
e
Plastic DIP
D
e
Ceramic DIP
F
e
Flatpak
L
e
Leadless Ceramic Chip Carrier (LCC)
S
e
Small Outline SOIC JEDEC
SJ
e
Small Outline SOIC EIAJ
Temperature Range
C
e
Commercial (0
§
C to
a
70
§
C)
M
e
Military (
b
55
§
C to
a
125
§
C)
6
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| 74F191DCQB | Up/Down Binary Counter with Preset and Ripple Clock |
| 74F191DCX | Up/Down Binary Counter with Preset and Ripple Clock |
| 74F191DMQB | Up/Down Binary Counter with Preset and Ripple Clock |
| 74F191FCQB | Up/Down Binary Counter with Preset and Ripple Clock |
| 74F191FCX | 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 |
|---|---|
| 74F191FCQB | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Up/Down Binary Counter with Preset and Ripple Clock |
| 74F191FCX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Up/Down Binary Counter with Preset and Ripple Clock |
| 74F191FMQB | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Up/Down Binary Counter with Preset and Ripple Clock |
| 74F191FMX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Up/Down Binary Counter with Preset and Ripple Clock |
| 74F191LCQB | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Up/Down Binary Counter with Preset and Ripple Clock |
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