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參數(shù)資料
| 型號： | CD74ACT251 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 8-Input Multiplexer, Three-State |
| 中文描述： | 8輸入多路復(fù)用器，三態(tài) |
| 文件頁數(shù)： | 6/8頁 |
| 文件大?。?/td> | 38K |
| 代理商： | CD74ACT251 |
6
Three-State Output
Capacitance
C
O
Input Capacitance
C
I
-
-
-
10
-
-
10
pF
Power Dissipation Capacitance
C
PD
(Note 11)
-
-
45
-
-
45
-
pF
NOTES:
8. Limits tested 100%.
9. 3.3V Min is at 3.6V, Max is at 3V.
10. 5V Min is at 5.5V, Max is at 4.5V.
11. C
PD
is used to determine the dynamic power consumption per device.
P
D
= V
CC2
f
i
(C
PD
+ C
L
) where f
i
= input frequency, C
L
= output load capacitance, V
CC
= supply voltage.
Switching Specifications
Input t
r
, t
f
= 3ns, C
L
= 50pF (Worst Case)
(Continued)
PARAMETER
SYMBOL
V
CC
(V)
-40
o
C TO 85
o
C
-55
o
C TO 125
o
C
UNITS
MIN
TYP
MAX
MIN
TYP
MAX
FIGURE 1. THREE-STATE PROPAGATION DELAY WAVEFORMS AND TEST CIRCUIT
FIGURE 2. PROPAGATION DELAY TIMES
DUT
WITH
THREE-
STATE
OUTPUT
INPUT LEVEL
90%
V
S
10%
GND
t
f
= 3ns
t
PZL
t
PZH
t
PLZ
t
PHZ
OUTPUTS
ENABLED
OUTPUTS
DISABLED
OUTPUT: LOW
TO OFF TO LOW
OUTPUT: HIGH
TO OFF TO HIGH
OTHER
INPUTS
(TIED HIGH
OR LOW)
OUTPUT
DISABLE
C
L
50pF
500
R
L
500
R
L
OUT
V
0.2V
CC
V
OL
(
≠
GND)
V
OH
(
≠
V
CC
)
0.8 V
CC
V
S
GND (t
PHZ,
t
PZH
)
OPEN (t
PHL,
t
PLH
)
2 V
CC
(t
PLZ,
t
PZL
)
(OPEN DRAIN)
OUTPUTS
ENABLED
t
r
= 3ns
OUTPUT
DISABLE
FOR AC SERIES ONLY: WHEN V
CC
= 1.5V, R
L
= 1k
INPUT LEVEL
t
r
= 3ns
t
f
= 3ns
90%
V
S
10%
I
N
V
S
V
S
t
PHL
t
PHL
t
PLH
INVERTING
OUTPUT Y
NON-INVERTING
OUTPUT Y
t
PLH
CD74AC251, CD74ACT251
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CD74ACT251E | 制造商:TI 制造商全稱:Texas Instruments 功能描述:8-Input Multiplexer, Three-State |
| CD74ACT251EN | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Logic IC |
| CD74ACT251F | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Logic IC |
| CD74ACT251M | 制造商:TI 制造商全稱:Texas Instruments 功能描述:8-Input Multiplexer, Three-State |
| CD74ACT253 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Dual 4-Input Multiplexer, Three-State |
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