SN74LS280M [ONSEMI]
暂无描述;
| 型号： | SN74LS280M |
| 厂家： | 
ONSEMI |
| 描述： | 暂无描述 |
| 文件： | 总4页 (文件大小：110K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
The SN74LS280 is a Universal 9-Bit Parity Generator/Checker. It
features odd/even outputs to facilitate either odd or even parity. By
cascading, the word length is easily expanded.
The LS280 is designed without the expander input implementation,
but the corresponding function is provided by an input at Pin 4 and the
absence of any connection at Pin 3. This design permits the LS280 to
be substituted for the LS180 which results in improved performance.
The LS280 has buffered inputs to lower the drive requirements to one
LS unit load.
http://onsemi.com
LOW
POWER
SCHOTTKY
• Generates Either Odd or Even Parity for Nine Data Lines
• Typical Data-to-Output Delay of only 33 ns
• Cascadable for n-Bits
• Can Be Used To Upgrade Systems Using MSI Parity Circuits
• Typical Power Dissipation = 80 mW
14
1
INPUTS
PLASTIC
N SUFFIX
CASE 646
V
F
E
D
C
B
9
A
8
CC
14
13
12
11
10
F
E
D
I
C
B
G
A
∑
∑
H
EVEN ODD
14
1
1
G
2
H
3
NC
4
I
5
∑
6
∑
7
GND
SOIC
D SUFFIX
CASE 751A
EVEN ODD
INPUT
INPUTS
OUTPUTS
FUNCTION TABLE
OUTPUTS
NUMBER OF INPUTS A
THRU 1 THAT ARE HIGH
∑EVEN ∑ODD
ORDERING INFORMATION
0, 2, 4, 6, 8
1, 3, 5, 7, 9
H
L
L
H
Device
Package
14 Pin DIP
14 Pin
Shipping
H = HIGH Level, L = LOW Level
SN74LS280N
SN74LS280D
2000 Units/Box
GUARANTEED OPERATING RANGES
2500/Tape & Reel
Symbol
Parameter
Supply Voltage
Min
4.75
0
Typ
5.0
25
Max
5.25
70
Unit
V
V
CC
T
A
Operating Ambient
Temperature Range
°C
I
Output Current – High
Output Current – Low
–0.4
8.0
mA
mA
OH
I
OL
Semiconductor Components Industries, LLC, 1999
1
Publication Order Number:
December, 1999 – Rev. 6
SN74LS280/D
SN74LS280
FUNCTIONAL BLOCK DIAGRAM
(8)
A
B
C
(9)
(10)
(5)
∑
EVEN
(11)
(12)
D
E
(13)
F
(6)
∑
ODD
(1)
(2)
(4)
G
H
I
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Limits
Min
Typ
Max
Symbol
Parameter
Input HIGH Voltage
Unit
Test Conditions
Guaranteed Input HIGH Voltage for
All Inputs
V
2.0
V
IH
0.8
Guaranteed Input LOW Voltage for
All Inputs
V
V
V
Input LOW Voltage
V
V
V
IL
Input Clamp Diode Voltage
Output HIGH Voltage
–0.65
3.5
–1.5
V
V
= MIN, I = –18 mA
IN
IK
CC
= MIN, I = MAX, V = V
IH
CC
OH
IN
2.7
OH
or V per Truth Table
IL
V
V
= V MIN,
CC
0.25
0.35
0.4
0.5
V
V
I
I
= 4.0 mA
= 8.0 mA
CC
OL
= V or V
IH
V
Output LOW Voltage
Input HIGH Current
IN
IL
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
27
= MAX, V = 0.4 V
IL
IN
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, V = 5.0 V)
A
CC
Limits
Typ
Symbol
Parameter
Unit
Test Conditions
Min
Max
t
t
Propagation Delay, Data to Output
33
29
50
45
PLH
ns
ΣEVEN
PHL
C = 15 pF
L
t
t
Propagation Delay, Data to Output
23
31
35
50
PLH
PHL
ns
ΣODD
http://onsemi.com
2
SN74LS280
PACKAGE DIMENSIONS
N SUFFIX
PLASTIC PACKAGE
CASE 646–06
ISSUE M
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
14
1
8
7
2. CONTROLLING DIMENSION: INCH.
3. DIMENSION L TO CENTER OF LEADS WHEN
FORMED PARALLEL.
4. DIMENSION B DOES NOT INCLUDE MOLD FLASH.
5. ROUNDED CORNERS OPTIONAL.
B
INCHES
DIM MIN MAX
0.770 18.16
MILLIMETERS
A
F
MIN
MAX
18.80
6.60
4.69
0.53
1.78
A
B
C
D
F
0.715
0.240
0.145
0.015
0.040
0.260
0.185
0.021
0.070
6.10
3.69
0.38
1.02
L
N
C
G
H
J
K
L
0.100 BSC
2.54 BSC
0.052
0.008
0.115
0.290
–––
0.095
0.015
0.135
0.310
10
1.32
0.20
2.92
7.37
–––
2.41
0.38
3.43
7.87
10
–T–
SEATING
PLANE
J
K
M
N
0.015
0.039
0.38
1.01
D 14 PL
H
G
M
M
0.13 (0.005)
D SUFFIX
PLASTIC SOIC PACKAGE
CASE 751A–03
ISSUE F
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSIONS A AND B DO NOT INCLUDE
MOLD PROTRUSION.
–A–
4. MAXIMUM MOLD PROTRUSION 0.15 (0.006)
PER SIDE.
14
1
8
7
5. DIMENSION D DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.127 (0.005) TOTAL
IN EXCESS OF THE D DIMENSION AT
MAXIMUM MATERIAL CONDITION.
–B–
P 7 PL
M
M
0.25 (0.010)
B
MILLIMETERS
DIM MIN MAX
INCHES
MIN
MAX
0.344
0.157
0.068
0.019
0.049
A
B
C
D
F
8.55
3.80
1.35
0.35
0.40
8.75 0.337
4.00 0.150
1.75 0.054
0.49 0.014
1.25 0.016
G
F
R X 45
C
G
J
K
M
P
1.27 BSC
0.050 BSC
–T–
SEATING
PLANE
0.19
0.10
0
0.25 0.008
0.25 0.004
0.009
0.009
7
J
M
K
D 14 PL
7
0
M
S
S
0.25 (0.010)
T B
A
5.80
0.25
6.20 0.228
0.50 0.010
0.244
0.019
R
http://onsemi.com
3
SN74LS280
ON Semiconductor and
are trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes
withoutfurthernoticetoanyproductsherein. SCILLCmakesnowarranty,representationorguaranteeregardingthesuitabilityofitsproductsforanyparticular
purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability,
including without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or
specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be
validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights nor the rights of others.
SCILLCproductsarenotdesigned, intended, orauthorizedforuseascomponentsinsystemsintendedforsurgicalimplantintothebody, orotherapplications
intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or
death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold
SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable
attorneyfees 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 SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer.
PUBLICATION ORDERING INFORMATION
North America Literature Fulfillment:
ASIA/PACIFIC: LDC for ON Semiconductor – Asia Support
Phone: 303–675–2121 (Tue–Fri 9:00am to 1:00pm, Hong Kong Time)
Toll Free from Hong Kong 800–4422–3781
Literature Distribution Center for ON Semiconductor
P.O. Box 5163, Denver, Colorado 80217 USA
Phone: 303–675–2175 or 800–344–3860 Toll Free USA/Canada
Fax: 303–675–2176 or 800–344–3867 Toll Free USA/Canada
Email: ONlit@hibbertco.com
Email: ONlit–asia@hibbertco.com
JAPAN: ON Semiconductor, Japan Customer Focus Center
4–32–1 Nishi–Gotanda, Shinagawa–ku, Tokyo, Japan 141–8549
Phone: 81–3–5487–8345
N. American Technical Support: 800–282–9855 Toll Free USA/Canada
Email: r14153@onsemi.com
EUROPE: LDC for ON Semiconductor – European Support
German Phone: (+1) 303–308–7140 (M–F 2:30pm to 5:00pm Munich Time)
Email: ONlit–german@hibbertco.com
Fax Response Line: 303–675–2167
800–344–3810 Toll Free USA/Canada
French Phone: (+1) 303–308–7141 (M–F 2:30pm to 5:00pm Toulouse Time)
Email: ONlit–french@hibbertco.com
ON Semiconductor Website: http://onsemi.com
English Phone: (+1) 303–308–7142 (M–F 1:30pm to 5:00pm UK Time)
Email: ONlit@hibbertco.com
For additional information, please contact your local
Sales Representative.
SN74LS280/D
相关型号：
SN74LS280NDS
LS SERIES, 9-BIT PARITY GENERATOR/CHECKER, COMPLEMENTARY OUTPUT, PDIP14, PLASTIC PACKAGE-14
MOTOROLA
SN74LS280NS
LS SERIES, 9-BIT PARITY GENERATOR/CHECKER, COMPLEMENTARY OUTPUT, PDIP14, PLASTIC PACKAGE-14
MOTOROLA
©2020 ICPDF网 联系我们和版权申明