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參數(shù)資料
| 型號(hào)： | DM74LS257 |
| 廠商： | Fairchild Semiconductor Corporation |
| 英文描述： | 3-STATE Quad 2-Data Selectors/Multiplexers |
| 中文描述： | 三態(tài)四2，數(shù)據(jù)選擇器/多路復(fù)用器 |
| 文件頁數(shù)： | 2/5頁 |
| 文件大小： | 56K |
| 代理商： | DM74LS257 |
www.fairchildsemi.com
2
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
DC Electrical Characteristics
Note 2:
All typicals are at V
CC
=
5V, T
A
=
25
°
C.
Note 3:
Not more than one output should be shorted at a time, and the duration should not exceed one second.
Note 4:
I
CC
is measured with all outputs open and all possible inputs grounded, while achieving the stated output conditions.
Supply Voltage
Input Voltage
Operating Free Air Temperature Range
Storage Temperature Range
7V
7V
0
°
C to
+
70
°
C
65
°
C to
+
150
°
C
Symbol
V
CC
V
IH
V
IL
I
OH
I
OL
T
A
Parameter
Supply Voltage
HIGH Level Input Voltage
Min
4.75
2
Nom
5
Max
5.25
Units
V
V
LOW Level Input Voltage
HIGH Level Output Current
LOW Level Output Current
0.8
2.6
24
V
mA
mA
°
C
Free Air Operating Temperature
0
70
Symbol
Parameter
Conditions
Min
Typ
Max
Units
(Note 2)
V
I
V
OH
V
OL
Input Clamp Voltage
HIGH Level Output Voltage
V
CC
=
Min, I
I
=
18 mA
V
IL
=
Max, V
IH
=
Min
V
IL
=
Max, V
IH
=
Min
I
OL
=
12 mA, V
CC
=
Min
V
CC
=
Max,
V
I
=
7V
V
CC
=
Max,
V
I
=
2.7V
V
CC
=
Max,
V
I
=
0.4V
V
CC
=
Max, V
O
=
2.7V
V
IH
=
Min, V
IL
=
Max
V
CC
=
Max, V
O
=
0.4V
V
IH
=
Min, V
IL
=
Max
V
CC
=
Max (Note 3)
V
CC
=
Max (Note 4)
V
CC
=
Max (Note 4)
1.5
V
V
2.4
3.1
LOW Level Output
Voltage
Input Current @ Max
0.35
0.25
0.5
0.4
0.2
V
I
I
Select
mA
Input Voltage
HIGH Level Input
Current
Other
Select
Other
0.1
40
20
0.8
0.4
I
IH
μ
A
I
IL
LOW Level Input
Current
OFF-State Output Current with
Select
Other
mA
I
OZH
20
μ
A
HIGH Level Output Voltage Applied
OFF-State Output Current with
LOW Level Output Voltage Applied
I
OZL
20
μ
A
I
OS
I
CCH
I
CCL
I
CCZ
Short Circuit Output Current
Supply Current with Outputs HIGH
Supply Current with Outputs LOW
Supply Current with Outputs Disabled V
CC
=
Max (Note 4)
20
100
10
16
mA
mA
mA
5.9
9.2
12
19
mA
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DM74LS257B WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
| DM74LS257BM | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 3-STATE Data Sel/Mul RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時(shí)間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| DM74LS257BMX | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 3-STATE Data Sel/Mul RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時(shí)間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| DM74LS257BN | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 3-STATE Data Sel/Mul RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時(shí)間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| DM74LS257N | 制造商:Texas Instruments 功能描述: 制造商:National Semiconductor Corporation 功能描述:LOGIC MUX, QUAD, 2-INPUT, LS-TTL, 16 Pin, Plastic, DIP |
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