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參數(shù)資料
| 型號： | DM74ALS157 |
| 廠商： | Fairchild Semiconductor Corporation |
| 英文描述： | Quad 1-of-2 Line Data Selector/Multiplexer(四2選1線數(shù)據(jù)選擇器/多路復用器) |
| 中文描述： | 四1 - 2線數(shù)據(jù)選擇器/多路（四2選1線數(shù)據(jù)選擇器/多路復用器） |
| 文件頁數(shù)： | 1/6頁 |
| 文件大小： | 67K |
| 代理商： | DM74ALS157 |
2000 Fairchild Semiconductor Corporation
DS006205
www.fairchildsemi.com
April 1984
Revised February 2000
D
DM74ALS157 DM74ALS158
Quad 1-of-2 Line Data Selector/Multiplexer
General Description
These data selectors/multiplexers contain inverters and
drivers to supply full on-chip data selection to the four out-
put gates. A separate strobe input is provided. A 4-bit word
is selected from one of two sources and is routed to the
four outputs. The ALS157 presents true data whereas the
ALS158 presents inverted data to minimize propagation
delay time.
Features
I
Switching specifications at 50 pF
I
Switching specifications guaranteed over full tempera-
ture and V
CC
range
I
Advanced oxide-isolated, ion-implanted Schottky TTL
process
I
Functionally and pin for pin compatible with Schottky
and low power Schottky TTL counterpart
I
Improved AC performance over Schottky and low power
Schottky counterparts
I
Expand any data input point
I
Multiplex dual data buses
I
General four functions of two variables (one variable is
common)
I
Source programmable counters
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
Order Number
DM74ALS157M
DM74ALS157SJ
DM74ALS157N
DM74ALS158N
Package Number
M16A
M16D
N16E
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
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Inputs
Output Y
Strobe Select
H
L
L
L
L
A
X
L
H
X
X
B
X
X
X
L
H
DM74ALS157 DM74ALS158
L
L
H
L
H
X
L
L
H
H
H
H
L
H
L
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DM74ALS158 | Quad 1-of-2 Line Data Selector/Multiplexer(四2選1線數(shù)據(jù)選擇器/多路復用器) |
| DM74ALS157M | Dual Positive-Edge-Triggered D-Type Flip-Flops With Clear And Preset 14-SOIC -40 to 85 |
| DM74ALS157N | Quad 1-of-2 Line Data Selector/Multiplexer |
| DM74ALS157MX | 2-Input Digital Multiplexer |
| DM74ALS157SJX | 2-Input Digital Multiplexer |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DM74ALS157J/A+ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:2-Input Digital Multiplexer |
| DM74ALS157M | 功能描述:編碼器、解碼器、復用器和解復用器 Qd 1-of-2 Dt 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 |
| DM74ALS157M/A+ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:2-Input Digital Multiplexer |
| DM74ALS157M/B+ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:2-Input Digital Multiplexer |
| DM74ALS157M_Q | 功能描述:編碼器、解碼器、復用器和解復用器 Qd 1-of-2 Dt 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 |
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