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參數資料
| 型號： | DM74ALS251 |
| 廠商： | Fairchild Semiconductor Corporation |
| 英文描述： | 3-STATE 1-of-8 Line Data Selector/Multiplexer(8選1線數據選擇器/多路復用器（三態輸出）) |
| 中文描述： | 三態- 1 - 8線數據選擇器/多路（8選1線數據選擇器/多路復用器（三態輸出）） |
| 文件頁數： | 1/7頁 |
| 文件大小： | 76K |
| 代理商： | DM74ALS251 |
2000 Fairchild Semiconductor Corporation
DS006214
www.fairchildsemi.com
April 1984
Revised April 2000
D
DM74ALS251
3-STATE 1-of-8 Line Data Selector/Multiplexer
General Description
This Data Selector/Multiplexer contains full on-chip decod-
ing to select one-of-eight data sources as a result of a
unique three-bit binary code at the Select inputs. Two com-
plementary outputs provide both inverting and non-invert-
ing buffer operation. An Output Control input is provided
which, when at the high level, places both outputs in the
high impedance OFF-State. In order to prevent bus access
conflicts, output disable times are shorter than output
enable times. The Select input buffers incorporate internal
overlap features to ensure that select input changes do not
cause invalid output transients.
Features
I
Advanced oxide-isolated, ion-implanted Schottky TTL
process
I
Switching performance is guaranteed over full tempera-
ture and V
CC
supply range
I
Pin and functional compatible with LS family counterpart
I
Improved output transient handling capability
I
Output control circuitry incorporates power-up 3-STATE
feature
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram
Function Table
H
=
HIGH Level
L
=
LOW Level
X
=
Don't Care
Z
=
High Impedance (OFF)
D0 thru D7
=
The Level of the Respective D Input
Order Number
DM74ALS251M
DM74ALS251SJ
DM74ALS251N
Package Number
M16A
M16D
N16E
Package Description
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow
16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Inputs
Outputs
Select
B
X
L
L
H
H
L
L
H
H
Strobe
S
H
L
L
L
L
L
L
L
L
C
X
L
L
L
L
H
H
H
H
A
X
L
H
L
H
L
H
L
H
Y
Z
D
0
D
1
D
2
D
3
D
4
D
5
D
6
D
7
W
Z
D
0
D
1
D
2
D
3
D
4
D
5
D
6
D
7
相關PDF資料 |
PDF描述 |
|---|---|
| DM74ALS251SJ | 8-Input Digital Multiplexer |
| DM74ALS251SJX | 8-Input Digital Multiplexer |
| DM74ALS253 | 3-STATE Dual 1-of-4 Line Data Selector/Multiplexer(雙4選1線數據選擇器/多路復用器（三態輸出）) |
| DM74ALS253M | 3-STATE Dual 1-of-4 Line Data Selector/Multiplexer |
| DM74ALS253N | 3-STATE Dual 1-of-4 Line Data Selector/Multiplexer |
相關代理商/技術參數 |
參數描述 |
|---|---|
| DM74ALS251J | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Input Digital Multiplexer |
| DM74ALS251J/A+ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Input Digital Multiplexer |
| DM74ALS251M | 功能描述:編碼器、解碼器、復用器和解復用器 3-STATE Data Sel/Mul RoHS:否 制造商:Micrel 產品:Multiplexers 邏輯系列:CMOS 位數: 線路數量（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 安裝風格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| DM74ALS251M/A+ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Input Digital Multiplexer |
| DM74ALS251M/B+ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Input Digital Multiplexer |
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