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參數(shù)資料
| 型號： | 74FCT244 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | FCT Interface Logic Octal Buffers/Line Drivers, Three-State |
| 中文描述： | 福賽特接口邏輯八路緩沖器/線路驅(qū)動器，三態(tài) |
| 文件頁數(shù)： | 2/3頁 |
| 文件大小： | 20K |
| 代理商： | 74FCT244 |
2
Switching Specifications
FCT Series tr, tf = 2.5ns, C
L
= 50pF, R
L
- See Figure 2
PARAMETER
SYMBOL
V
CC
(V)
+25
o
C
0
o
C to
+70
o
C
-55
o
C to
+125
o
C
+25
o
C
0
o
C to
+70
o
C
-55
o
C to
+125
o
C
UNITS
TYP
MIN
MAX
MIN
MAX
TYP
MIN
MAX
MIN
MAX
Propagation Delays
Data to Outputs
FCT240/AT
t
PLH
,
t
PHL
5
5
1.5
8
1.5
9
4.4
1.5
5.6
1.5
6.7
ns
FCT241
t
PLH
,
t
PHL
5
4
1.5
6.5
1.5
7
-
-
-
-
-
ns
FCT244/AT
t
PLH
,
t
PHL
5
4.5
1.5
6.5
1.5
7
3.8
1.5
5.3
1.5
6.2
μ
s
Output Enable
Times
FCT240/AT
t
PZL
,
t
PZH
5
7
1.5
10
1.5
10.5
4.7
1.5
6.2
1.5
7.7
μ
s
FCT241
t
PZL
,
t
PZH
5
5.5
1.5
8
1.5
8.5
-
-
-
-
-
ns
FCT244/AT
t
PZL
,
t
PZH
5
6
1.5
8
1.5
8.5
4.8
1.5
6.5
1.5
7.8
ns
Output Disable
Times
FCT240/AT
t
PLZ
,
t
PHZ
5
6
1.5
9.5
1.5
10
4
1.5
5.6
1.5
6.5
μ
s
FCT241
t
PLZ
,
t
PHZ
5
4.5
1.5
7
1.5
7.5
-
-
-
-
-
ns
FCT244/AT
t
PLZ
,
t
PHZ
5
5
1.5
7
1.5
7.5
4.5
1.5
5.8
1.5
6.8
μ
s
Power Dissipation
Capacitance
FCT240/AT
C
PD
§
-
38 Typical
38 Typical
pF
FCT241
C
PD
§
-
33 Typical
-
pF
FCT244/AT
C
PD
§
35 Typical
35 Typical
pF
Min. (Valley) V
OHV
During Switch-
ingofOtherOutputs(OutputUnder
Test Not Switching)
V
OHV
See
Figure 1
5
0.5 Typical at +25
o
C
V
Max. (Peak) V
OLP
During Switch-
ingofOtherOutputs(OutputUnder
Test Not Switching)
V
OLP
See
Figure 1
5
1 Typical at +25
o
C
V
Input Capacitance
C
I
-
-
-
10
-
10
-
-
10
-
10
pF
3-State Output Capacitance
C
O
-
-
-
15
-
15
-
-
15
-
15
pF
5V: min. is at 5.5V, max. is at 4.5V.
5V: min. is at 5.25V for 0
o
C to +70
o
C, max. is at 4.75V for 0
o
C to +70
o
C, typ. is at 5V
§C
PD
, measured per function, is used to determine the dynamic power consumption. P
D
(per package) = V
CC
I
CC
+
∑
(V
CC2
fi C
PD
+ V
O2
fo C
L
+ V
CC
I
CC
D) where:
V
CC
= supply voltage
I
CC
= flow through current x unit load
C
L
= output load capacitance
D = duty cycle of input high
fo = output frequency
fi = input frequency
CD54/74FCT540, CD54/74FCT540AT, CD54/74FCT241, CD54/74FCT244, CD54/74FCT244AT
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 74FCT244 | FAST CMOS OCTAL BUFFER/LINE DRIVERS |
| 74FCT245 | 8-Bit Transceiver |
| 74FCT245 | FAST CMOS OCTAL BIDIRECTIONAL TRANSCEIVERS |
| 74FR245 | Octal Bidirectional Transceiver with TRI-STATE Outputs |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74FCT244 WAF | 制造商:Texas Instruments 功能描述: |
| 74FCT244A WAF | 制造商:Texas Instruments 功能描述: |
| 74FCT244ADCQR | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Dual 4-Bit Non-Inverting Buffer/Driver |
| 74FCT244ADCX | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Dual 4-Bit Non-Inverting Buffer/Driver |
| 74FCT244AFC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Dual 4-Bit Non-Inverting Buffer/Driver |
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