概述
规格参数
数据手册
替代型号SN74LS155N 概述
DUAL 1-OF-4 DECODER/ DEMULTIPLEXER 1 -OF- 4双解码器/解复用器 解码器/驱动器
SN74LS155N 规格参数
| 是否Rohs认证： | 不符合 | 生命周期： | Obsolete |
| 包装说明： | DIP, | Reach Compliance Code： | unknown |
| ECCN代码： | EAR99 | HTS代码： | 8542.39.00.01 |
| 风险等级： | 5.8 | 其他特性： | FUNCTION 2 OUTPUT INVERTED |
| 系列： | LS | JESD-30 代码： | R-PDIP-T16 |
| JESD-609代码： | e0 | 长度： | 19.175 mm |
| 负载电容（CL）： | 15 pF | 逻辑集成电路类型： | OTHER DECODER/DRIVER |
| 功能数量： | 2 | 端子数量： | 16 |
| 最高工作温度： | 70 °C | 最低工作温度： | |
| 输出极性： | TRUE | 封装主体材料： | PLASTIC/EPOXY |
| 封装代码： | DIP | 封装形状： | RECTANGULAR |
| 封装形式： | IN-LINE | 峰值回流温度（摄氏度）： | NOT SPECIFIED |
| 最大电源电流（ICC）： | 10 mA | 传播延迟（tpd）： | 30 ns |
| 认证状态： | Not Qualified | 座面最大高度： | 4.44 mm |
| 最大供电电压 (Vsup)： | 5.25 V | 最小供电电压 (Vsup)： | 4.75 V |
| 标称供电电压 (Vsup)： | 5 V | 表面贴装： | NO |
| 技术： | TTL | 温度等级： | COMMERCIAL |
| 端子面层： | Tin/Lead (Sn/Pb) | 端子形式： | THROUGH-HOLE |
| 端子节距： | 2.54 mm | 端子位置： | DUAL |
| 处于峰值回流温度下的最长时间： | NOT SPECIFIED | 宽度： | 7.62 mm |
| Base Number Matches： | 1 |
SN74LS155N 数据手册
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PDF下载SN54/74LS155
SN54/74LS156
DUAL 1-OF-4 DECODER/
DEMULTIPLEXER
The SN54/74LS155 and SN54/74LS156 are high speed Dual 1-of-4
Decoder/Demultiplexers. These devices have two decoders with common
2-bit Address inputs and separate gated Enable inputs. Decoder “a” has an
Enable gate with one active HIGH and one active LOW input. Decoder “b” has
two active LOW Enable inputs. If the Enable functions are satisfied, one
output of each decoder will be LOW as selected by the address inputs. The
LS156 has open collector outputs for wired-OR (DOT-AND) decoding and
function generator applications.
DUAL 1-OF-4 DECODER/
DEMULTIPLEXER
LS156-OPEN-COLLECTOR
LOW POWER SCHOTTKY
The LS155 and LS156 are fabricated with the Schottky barrier diode
process for high speed and are completely compatible with all Motorola TTL
families.
• Schottky Process for High Speed
• Multifunction Capability
J SUFFIX
CERAMIC
CASE 620-09
• Common Address Inputs
16
• True or Complement Data Demultiplexing
• Input Clamp Diodes Limit High Speed Termination Effects
• ESD > 3500 Volts
1
N SUFFIX
PLASTIC
CASE 648-08
16
CONNECTION DIAGRAM DIP (TOP VIEW)
1
D SUFFIX
SOIC
CASE 751B-03
NOTE:
The Flatpak version
has the same pinouts
(Connection Diagram) as
the Dual In-Line Package.
16
1
ORDERING INFORMATION
SN54LSXXXJ Ceramic
SN74LSXXXN Plastic
SN74LSXXXD SOIC
LOGIC SYMBOL
PIN NAMES
LOADING (Note a)
HIGH
LOW
A , A
Address Inputs
0.5 U.L.
0.5 U.L.
0.5 U.L.
10 U.L.
0.25 U.L.
0.25 U.L.
0.25 U.L.
0
1
b
E , E
Enable (Active LOW) Inputs
Enable (Active HIGH) Input
Active LOW Outputs (Note b)
a
a
E
O –O
5 (2.5) U.L.
0
3
NOTES:
a) 1 TTL Unit Load (U.L.) = 40 µA HIGH/1.6 mA LOW.
b) The Output LOW drive factor is 2.5 U.L. for Military (54) and 5 U.L. for Commercial (74)
Temperature Ranges. The HIGH level drive for the LS156 must be established by an external
resistor.
FAST AND LS TTL DATA
5-262
SN54/74LS155 • SN54/74LS156
LOGIC DIAGRAM
FUNCTIONAL DESCRIPTION
The LS155 and LS156 are Dual 1-of-4 Decoder/Demulti-
plexers with common Address inputs and separate gated
Enable inputs. When enabled, each decoder section accepts
AND the minterm functions by tying outputs together. Any
number of terms can be wired-AND as shown below.
f = (E + A + A ) (E + A + A ) (E + A + A )
0
1
0
1
0
1
the binary weighted Address inputs (A , A ) and provides four
0
1
(E + A + A )
0
1
mutuallyexclusiveactiveLOWoutputs(O –O ).IftheEnable
0
3
requirements of each decoder are not met, all outputs of that
decoder are HIGH.
where E = E + E ; E = E + E
a
a
b
b
Each decoder section has a 2-input enable gate. The
enable gate for Decoder “a” requires one active HIGH input
and one active LOW input (E •E ). In demultiplexing applica-
a
a
tions, Decoder “a” can accept either true or complemented
databyusingtheE orE inputsrespectively.Theenablegate
a
a
for Decoder “b” requires two active LOW inputs (E •E ). The
b
b
LS155 or LS156 can be used as a 1-of-8 Decoder/Demulti-
plexerbytyingE toE andrelabelingthecommonconnection
a
b
as (A ). The other E and E are connected together to form
2
b
a
the common enable.
The LS155 and LS156 can be used to generate all four
minterms of two variables. These four minterms are useful in
some applications replacing multiple gate functions as shown
in Fig. a. The LS156 has the further advantage of being able to
Figure a
TRUTH TABLE
ADDRESS
ENABLE “a”
OUTPUT “a”
ENABLE “b”
OUTPUT “b”
A
A
E
a
E
a
O
O
O
O
E
b
E
b
O
O
O
O
3
0
1
0
1
2
3
0
1
2
X
X
L
X
H
H
H
H
H
X
H
H
H
H
X
L
H
L
X
L
L
H
H
X
H
H
H
H
H
L
L
L
L
H
L
H
H
H
H
H
L
H
H
H
H
H
L
H
H
H
H
L
X
L
L
L
L
H
L
L
L
L
H
L
H
H
H
H
H
L
H
H
H
H
H
L
H
H
H
H
L
H
H
H
H = HIGH Voltage Level
L = LOW Voltage Level
X = Don’t Care
FAST AND LS TTL DATA
5-263
SN54/74LS155
GUARANTEED OPERATING RANGES
Symbol
Parameter
Min
Typ
Max
Unit
V
CC
Supply Voltage
54
74
4.5
4.75
5.0
5.0
5.5
5.25
V
T
A
Operating Ambient Temperature Range
54
74
–55
0
25
25
125
70
°C
I
I
Output Current — High
Output Current — Low
54, 74
–0.4
mA
mA
OH
54
74
4.0
8.0
OL
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Limits
Symbol
Parameter
Input HIGH Voltage
Unit
Test Conditions
Min
Typ
Max
Guaranteed Input HIGH Voltage for
All Inputs
V
2.0
V
IH
54
74
0.7
0.8
Guaranteed Input LOW Voltage for
All Inputs
V
V
V
Input LOW Voltage
V
IL
Input Clamp Diode Voltage
Output HIGH Voltage
–0.65
3.5
–1.5
V
V
V
V
V
= MIN, I = –18 mA
IN
IK
CC
54
74
2.5
2.7
= MIN, I
OH
= MAX, V = V
IN
CC
IH
OH
or V per Truth Table
IL
3.5
V
V
= V
CC
MIN,
= V or V
IL IH
54, 74
74
0.25
0.35
0.4
0.5
V
V
I
I
= 4.0 mA
= 8.0 mA
CC
IN
OL
V
Output LOW Voltage
Input HIGH Current
OL
per Truth Table
OL
20
0.1
µA
mA
mA
mA
mA
V
V
V
V
V
= MAX, V = 2.7 V
IN
CC
CC
CC
CC
CC
I
IH
= MAX, V = 7.0 V
IN
I
I
I
Input LOW Current
–0.4
–100
10
= MAX, V = 0.4 V
IN
IL
Short Circuit Current (Note 1)
Power Supply Current
–20
= MAX
= MAX
OS
CC
Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.
AC CHARACTERISTICS (T = 25°C)
A
Limits
Typ
Symbol
Parameter
Propagation Delay
Unit
Test Conditions
Min
Max
t
t
10
19
15
30
PLH
PHL
ns
Figure 1
Figure 2
Figure 1
Address, E or E to Output
a
b
t
t
Propagation Delay
Address to Output
17
19
26
30
V
= 5.0 V
PLH
PHL
CC
= 15 pF
ns
ns
C
L
t
t
Propagation Delay
18
18
27
27
PLH
PHL
E
a
to Output
AC WAVEFORMS
Figure 1
Figure 2
FAST AND LS TTL DATA
5-264
SN54/74LS156
GUARANTEED OPERATING RANGES
Symbol
Parameter
Min
Typ
Max
Unit
V
CC
Supply Voltage
54
74
4.5
4.75
5.0
5.0
5.5
5.25
V
T
A
Operating Ambient Temperature Range
54
74
–55
0
25
25
125
70
°C
V
Output Voltage — High
Output Current — Low
54, 74
5.5
V
OH
I
54
74
4.0
8.0
mA
OL
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Limits
Symbol
Parameter
Input HIGH Voltage
Unit
Test Conditions
Min
Typ
Max
Guaranteed Input HIGH Voltage for
All Inputs
V
2.0
V
IH
54
74
0.7
0.8
Guaranteed Input LOW Voltage for
All Inputs
V
V
Input LOW Voltage
V
IL
Input Clamp Diode Voltage
Output HIGH Current
–0.65
–1.5
100
V
V
V
= MIN, I = –18 mA
IN
IK
CC
I
54, 74
54, 74
µA
= MIN, V = MAX
OH
OH
CC
V
V
= V
MIN,
0.25
0.35
0.4
0.5
V
V
I
= 4.0 mA
= 8.0 mA
CC
IN
CC
OL
= V or V
V
OL
Output LOW Voltage
Input HIGH Current
IL IH
74
I
OL
per Truth Table
20
0.1
µA
mA
mA
mA
V
CC
V
CC
V
CC
V
CC
= MAX, V = 2.7 V
IN
I
IH
= MAX, V = 7.0 V
IN
I
I
Input LOW Current
–0.4
10
= MAX, V = 0.4 V
IN
IL
Power Supply Current
= MAX
CC
AC CHARACTERISTICS (T = 25°C)
A
Limits
Typ
Symbol
Parameter
Propagation Delay
Unit
Test Conditions
Min
Max
t
t
25
34
40
51
PLH
PHL
ns
Figure 1
Figure 2
Figure 1
Address, E or E to Output
a
b
V
C
R
= 5.0 V
CC
t
t
Propagation Delay
Address to Output
31
34
46
51
PLH
PHL
ns
ns
= 15 pF
L
= 2.0 kΩ
L
t
t
Propagation Delay
32
32
48
48
PLH
PHL
E
a
to Output
AC WAVEFORMS
Figure 1
Figure 2
FAST AND LS TTL DATA
5-265
Case 751B-03 D Suffix
16-Pin Plastic
SO-16
-A-
16
1
9
8
P
C
-B-
R X 45°
G
-T-
J
M
F
D
°
°
°
°
K
Case 648-08 N Suffix
16-Pin Plastic
-A-
16
1
9
B
S
8
F
L
C
K
-T-
M
H
J
G
D
°
°
°
°
Case 620-09 J Suffix
16-Pin Ceramic Dual In-Line
-A-
16
9
-B-
1
8
L
C
-T-
K
M
N
E
J
F
G
D
°
°
°
°
FAST AND LS TTL DATA
5-266
Motorolareserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representationorguaranteeregarding
the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit,
andspecifically disclaims any and all liability, includingwithoutlimitationconsequentialorincidentaldamages. “Typical” parameters can and do vary in different
applications. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. Motorola does
not convey any license under its patent rights nor the rights of others. Motorola products are not designed, intended, or authorized for use as components in
systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of
the Motorola product could create a situation where personal injury or death may occur. Should Buyer purchase or use Motorola products for any such
unintendedor unauthorized application, Buyer shall indemnify and hold Motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless
against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death
associated with such unintended or unauthorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part.
Motorola and
are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal Opportunity/Affirmative Action Employer.
Literature Distribution Centers:
USA: Motorola Literature Distribution; P.O. Box 20912; Phoenix, Arizona 85036.
EUROPE: Motorola Ltd.; European Literature Centre; 88 Tanners Drive, Blakelands, Milton Keynes, MK14 5BP, England.
JAPAN: Nippon Motorola Ltd.; 4-32-1, Nishi-Gotanda, Shinagawa-ku, Tokyo 141, Japan.
ASIA PACIFIC: Motorola Semiconductors H.K. Ltd.; Silicon Harbour Center, No. 2 Dai King Street, Tai Po Industrial Estate, Tai Po, N.T., Hong Kong.
◊
SN74LS155N 替代型号
| 型号 | 制造商 | 描述 | 替代类型 | 文档 |
| SN54LS155J | MOTOROLA | DUAL 1-OF-4 DECODER/ DEMULTIPLEXER | 功能相似 |
|
| SN54LS155N | MOTOROLA | Decoder/Driver, LS Series, True Output, TTL, PDIP16, PLASTIC, DIP-16 | 功能相似 |
|
SN74LS155N 相关器件
| 型号 | 制造商 | 描述 | 价格 | 文档 |
| SN74LS155N-00 | TI | LS SERIES, OTHER DECODER/DRIVER, TRUE OUTPUT, PDIP16 | 获取价格 |
|
| SN74LS155N1 | TI | IC,DECODER/DEMUX,2-TO-4-LINE,LS-TTL,DIP,16PIN,PLASTIC | 获取价格 |
|
| SN74LS155N3 | ROCHESTER | Decoder/Driver | 获取价格 |
|
| SN74LS155ND | ETC | 2-To-4-Line Demultiplexer | 获取价格 |
|
| SN74LS155NDS | ETC | 2-To-4-Line Demultiplexer | 获取价格 |
|
| SN74LS155W | MOTOROLA | IC,DECODER/DEMUX,2-TO-4-LINE,LS-TTL,FP,16PIN,CERAMIC | 获取价格 |
|
| SN74LS156 | MOTOROLA | DUAL 1-OF-4 DECODER/ DEMULTIPLEXER | 获取价格 |
|
| SN74LS156 | TI | DUAL 2-LINE TO 4-LINE DECODERS/DEMULTIPLEXERS | 获取价格 |
|
| SN74LS156 | ONSEMI | Dual 1-of-4 Decorder/Demultiplexer | 获取价格 |
|
| SN74LS156D | ONSEMI | DUAL 1-OF-4 DECODER/ DEMULTIPLEXER | 获取价格 |
|
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