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參數(shù)資料
| 型號(hào)： | SN74LS139N |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 通用總線功能 |
| 英文描述： | LOW POWER SCHOTTKY |
| 中文描述： | LS SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, PDIP16 |
| 封裝： | PLASTIC, DIP-16 |
| 文件頁數(shù)： | 3/8頁 |
| 文件大?。?/td> | 115K |
| 代理商： | SN74LS139N |
SN74LS139
http://onsemi.com
3
LOGIC DIAGRAM
V
CC
= PIN 16
GND = PIN 8
= PIN NUMBERS
A
0a
A
1a
E
a
A
0b
O
3a
O
0b
O
1b
O
2b
O
3b
O
1a
O
2a
E
b
A
1b
O
0a
12
11
6
7
4
5
10
9
1
2
3
15
14
13
FUNCTIONAL DESCRIPTION
The LS139 is a high speed dual 1-of-4 decoder/
demultiplexer fabricated with the Schottky barrier diode
process. The device has two independent decoders, each of
which accept two binary weighted inputs (A
0
, A
1
) and
provide four mutually exclusive active LOW outputs
(O
0
–O
3
). Each decoder has an active LOW Enable (E).
When E is HIGH all outputs are forced HIGH. The enable
can be used as the data input for a 4-output demultiplexer
application.
Each half of the LS139 generates all four minterms of two
variables. These four minterms are useful in some
applications, replacing multiple gate functions as shown in
Fig. a, and thereby reducing the number of packages
required in a logic network.
TRUTH TABLE
INPUTS
OUTPUTS
E
A
0
A
1
O
0
O
1
O
2
O
3
H
L
L
L
L
X
L
H
L
H
X
L
L
H
H
H
L
H
H
H
H
H
L
H
H
H
H
H
L
H
H
H
H
H
L
H = HIGH Voltage Level
L = LOW Voltage Level
X = Don’t Care
Figure a
E
A
0
A
1
E
A
0
A
1
E
A
0
A
1
E
A
0
A
1
O
0
O
1
O
2
O
3
E
A
0
A
1
E
A
0
A
1
E
A
0
A
1
E
A
0
A
1
O
0
O
1
O
2
O
3
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SN74LS13D | SCHMITT TRIGGERS DUAL GATE/HEX INVERTER |
| SN74LS13N | SCHMITT TRIGGERS DUAL GATE/HEX INVERTER |
| SN74LS13 | SCHMITT TRIGGERS DUAL GATE/HEX INVERTER |
| SN74LS145D | 1-OF-10 DECODER/DRIVER OPEN-COLLECTOR |
| SN74LS145N | 1-OF-10 DECODER/DRIVER OPEN-COLLECTOR |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SN74LS139ND | 制造商:Motorola Inc 功能描述: |
| SN74LS139NDS | 制造商:Motorola Inc 功能描述: |
| SN74LS145D | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 BDC to Decimal 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 |
| SN74LS145DE4 | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 BCD-To-Decimal Decoders/Drivers 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 |
| SN74LS145DG4 | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 BCD To Decimal Decoders Drivers 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 |
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