- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄374869 > SN74LS253 (ON SEMICONDUCTOR) LOW POWER SCHOTTKY PDF資料下載
參數(shù)資料
| 型號： | SN74LS253 |
| 廠商： | ON SEMICONDUCTOR |
| 英文描述： | LOW POWER SCHOTTKY |
| 中文描述： | 低功耗肖特基 |
| 文件頁數(shù)： | 3/8頁 |
| 文件大?。?/td> | 108K |
| 代理商： | SN74LS253 |
SN74LS253
http://onsemi.com
3
LOGIC DIAGRAM
E
0b
I
3b
I
2b
I
1b
I
0b
S
0
S
1
I
3a
I
2a
I
1a
I
0a
E
0a
Z
b
Z
a
14
1
2
6
7
3
4
5
9
11
13
10
12
15
V
CC
= PIN 16
GND = PIN 8
= PIN NUMBERS
FUNCTIONAL DESCRIPTION
The LS253 contains two identical 4-Input Multiplexers
with 3-state outputs. They select two bits from four sources
selected by common select inputs (S
0
, S
1
). The 4-input
multiplexers have individual Output Enable (E
0a
, E
0b
)
inputs which when HIGH, forces the outputs to a high
impedance (high Z) state.
The LS253 is the logic implementation of a 2-pole,
4-position switch, where the position of the switch is
determined by the logic levels supplied to the two select
inputs. The logic equations for the outputs are shown below:
If the outputs of 3-state devices are tied together, all but
one device must be in the high impedance state to avoid high
currents that would exceed the maximum ratings. Designers
should ensure that Output Enable signals to 3-state devices
whose outputs are tied together are designed so that there is
no overlap.
Z
a
= E
0a
(I
0a
S
1
S
0
+ I
1a
S
1
S
0
I
2a
S
1
S
0
+ I
3a
S
1
S
0
)
Z
b
= E
0b
(I
0b
S
1
S
0
+ I
1b
S
1
S
0
I
2b
S
1
S
0
+ I
3b
S
1
S
0
)
TRUTH TABLE
SELECT
INPUTS
DATA INPUTS
OUTPUT
ENABLE
OUTPUT
S
0
S
1
I
0
I
1
I
2
I
3
E
0
Z
X
L
L
H
H
L
L
H
H
X
L
L
L
L
H
H
H
H
X
L
H
X
X
X
X
X
X
X
X
X
L
H
X
X
X
X
X
X
X
X
X
L
H
X
X
X
X
X
X
X
X
X
L
H
H
L
L
L
L
L
L
L
L
(Z)
L
H
L
H
L
H
L
H
H = HIGH Level
L = LOW Level
X = Irrelevant
(Z) = High Impedance (off)
Address inputs S
0
and S
1
are common to both sections.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SN74LS253D | LOW POWER SCHOTTKY |
| SN74LS253N | LOW POWER SCHOTTKY |
| SN74LS273 | LOW POWER SCHOTTKY |
| SN74LS273W | OCTAL D-TYPE FLIP-FLOP WITH CLEAR |
| SN74LS273DW | LOW POWER SCHOTTKY |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SN74LS253D | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 Dual 4-to-1 Data Slct/Mltpx W/3St Otp 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 |
| SN74LS253DE4 | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 Dual 4-to-1 Data Slct/Mltpx W/3St Otp 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 |
| SN74LS253DG4 | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 4Ln To 1Ln Data Selector Multiplexer 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 |
| SN74LS253DR | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 Dual 4-to-1 Data Slct/Mltpx W/3St Otp 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 |
| SN74LS253DRE4 | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 Dual 4-to-1 Data Slct/Mltpx W/3St Otp 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。