參數(shù)資料
型號(hào): 74AC257
廠商: Fairchild Semiconductor Corporation
英文描述: Quad 2-Input Multiplexer with 3-STATE Outputs
中文描述: 四2輸入多路復(fù)用器與三態(tài)輸出
文件頁(yè)數(shù): 4/10頁(yè)
文件大?。?/td> 89K
代理商: 74AC257
DC SPECIFICATIONS
Symbol
Parameter
Test Conditions
Value
Unit
V
CC
(V)
T
A
= 25
o
C
Min.
Typ.
2.1
3.15
3.85
-40 to 85
o
C
Min.
2.1
3.15
3.85
Max.
Max.
V
IH
High Level Input Voltage
3.0
4.5
5.5
3.0
4.5
5.5
3.0
4.5
5.5
3.0
4.5
5.5
3.0
4.5
5.5
3.0
4.5
5.5
5.5
5.5
V
O
= 0.1 V or
V
CC
- 0.1 V
1.5
2.25
2.75
1.5
2.25
2.75
2.99
4.49
5.49
V
V
IL
Low Level Input Voltage
V
O
= 0.1 V or
V
CC
- 0.1 V
0.9
1.35
1.65
0.9
1.35
1.65
V
V
OH
High Level Output
Voltage
V
I(*)
=
V
IH
or
V
IL
I
O
=-50
μ
A
I
O
=-50
μ
A
I
O
=-50
μ
A
I
O
=-12 mA
I
O
=-24 mA
I
O
=-24 mA
I
O
=50
μ
A
I
O
=50
μ
A
I
O
=50
μ
A
I
O
=12 mA
I
O
=24 mA
I
O
=24 mA
2.9
4.4
5.4
2.56
3.86
4.86
2.9
4.4
5.4
2.46
3.76
4.76
V
V
OL
Low Level Output
Voltage
V
I(*)
=
V
IH
or
V
IL
0.002
0.001
0.001
0.1
0.1
0.1
0.36
0.36
0.36
±
0.1
±
0.5
0.1
0.1
0.1
0.44
0.44
0.44
±
1
±
5
V
I
I
Input Leakage Current
3 State Output Leakage
Current
Quiescent Supply
Current
Dynamic Output Current
(note 1, 2)
V
I
= V
CC
or GND
V
I
= V
IH
or V
IL
V
O
= V
CC
or GND
V
I
= V
CC
or GND
μ
A
μ
A
I
OZ
I
CC
5.5
8
80
μ
A
I
OLD
I
OHD
5.5
V
OLD
= 1.65 V max
V
OHD
= 3.85 V min
75
-75
mA
mA
1) Maximum testduration 2ms, one output loaded at time
2) Incidentwave switching isguaranteed ontransmission lines withimpedances aslowas 50
.
(*)Alloutputs loaded.
74AC257
4/10
相關(guān)PDF資料
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74AC257MTC Quad 2-Input Multiplexer with 3-STATE Outputs
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
74AC257 WAF 制造商:Fairchild Semiconductor Corporation 功能描述:
74AC257B 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 Quad 2-Ch Multiplexr 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
74AC257DC 制造商:National Semiconductor Corporation 功能描述:LOGIC MUX, QUAD, 2-INPUT, AC-CMOS, 16 Pin, Ceramic, DIP
74AC257DSC 制造商: 功能描述: 制造商:undefined 功能描述:
74AC257M 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 Quad 2-Ch Multiplexr 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