SN54F280BFK [TI]
9-BIT PARITY GENERATORS/CHECKERS; 9位奇偶发生器/跳棋型号: | SN54F280BFK |
厂家: | TEXAS INSTRUMENTS |
描述: | 9-BIT PARITY GENERATORS/CHECKERS |
文件: | 总5页 (文件大小:80K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
SN54F280B, SN74F280B
9-BIT PARITY GENERATORS/CHECKERS
SDFS008A – D2932, APRIL 1986 – REVISED OCTOBER 1993
SN54F280B . . . J PACKAGE
SN74F280B . . . D OR N PACKAGE
(TOP VIEW)
• Generates Either Odd or Even Parity for
Nine Data Lines
• Cascadable for N-Bits Parity
• Package Options Include Plastic
Small-Outline Packages, Ceramic Chip
Carriers, and Standard Plastic and Ceramic
300-mil DIPs
G
H
NC
V
F
E
D
C
B
A
1
2
3
4
5
6
7
14
13
12
11
10
9
CC
I
Σ EVEN
Σ ODD
GND
description
8
These universal, monolithic, 9-bit parity
generators/checkers feature odd and even
outputs to facilitate operation of either odd or even
parity application. The word-length capability is
easily expanded by cascading.
SN54F280B . . . FK PACKAGE
(TOP VIEW)
The SN54F280B is characterized for operation
over the full military temperature range of –55°C
to 125°C. The SN74F280B is characterized for
operation from 0°C to 70°C.
3
2
1
20 19
18
E
NC
NC
4
5
6
7
8
NC
D
17
16
15
14
I
FUNCTION TABLE
NC
C
NC
NO. OF INPUTS
OUTPUTS
Σ EVEN
9 10 11 12 13
A THRU I
Σ EVEN
Σ ODD
THAT ARE HIGH
0, 2, 4, 6, 8
H
L
L
1, 3, 5, 7, 9
H
NC – No internal connection
†
logic symbol
2k
8
A
B
C
D
E
F
G
H
I
9
10
11
12
13
1
5
Σ EVEN
6
Σ ODD
2
4
†
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
Pin numbers shown are for the D, J, and N packages.
Copyright 1993, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
2–1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54F280B, SN74F280B
9-BIT PARITY GENERATORS/CHECKERS
SDFS008A – D2932, APRIL 1986 – REVISED OCTOBER 1993
logic diagram (positive logic)
8
A
9
B
5
10
C
Σ EVEN
11
D
12
E
13
F
6
Σ ODD
1
G
2
H
4
I
Pin numbers shown are for the D, J, and N packages.
2–2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54F280B, SN74F280B
9-BIT PARITY GENERATORS/CHECKERS
SDFS008A – D2932, APRIL 1986 – REVISED OCTOBER 1993
†
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V
CC
Input voltage range (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –1.2 V to 7 V
Input current range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –30 mA to 5 mA
Voltage range applied to any output in the high state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to V
CC
Current into any output in the low state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 mA
Operating free-air temperature range: SN54F280B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55°C to 125°C
SN74F280B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C
†
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTE 1: The input voltage ratings may be exceeded provided the input current ratings are observed.
recommended operating conditions
SN54F280B
SN74F280B
MIN NOM
UNIT
MIN NOM
MAX
MAX
V
V
V
Supply voltage
4.5
2
5
5.5
4.5
2
5
5.5
V
V
CC
IH
IL
High-level input voltage
Low-level input voltage
Input clamp current
0.8
–18
– 1
0.8
–18
– 1
20
V
I
I
I
mA
mA
mA
°C
IK
High-level output current
Low-level output current
Operating free-air temperature
OH
OL
20
T
A
–55
125
0
70
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
SN54F280B
SN74F280B
PARAMETER
TEST CONDITIONS
UNIT
V
‡
‡
MIN TYP
MAX
MIN TYP
MAX
V
V
V
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
= 4.5 V,
= 4.5 V
= 4.75 V,
= 4.5 V
= 0,
I = –18 mA
I
–1.2
–1.2
IK
I
I
I
= – 1 mA
= – 1 mA
= 20 mA
2.5
3.4
0.3
2.5
2.7
3.4
0.3
OH
OH
OL
V
OH
OL
0.5
0.1
0.5
0.1
V
I
I
I
I
I
V = 7 V
I
mA
µA
µA
mA
mA
I
= 5.5 V,
= 5.5 V,
= 5.5 V,
= 5.5 V,
V = 2.7 V
I
20
20
IH
V = 0.5 V
I
– 20
–150
35
– 20
–150
35
IL
§
V
O
= 0
–60
–60
OS
CC
V = 0
I
26
26
‡
§
All typical values are at V
= 5 V, T = 25°C.
A
CC
Not more than one output should be shorted at a time, and the duration of the short circuit should not exceed one second.
2–3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
SN54F280B, SN74F280B
9-BIT PARITY GENERATORS/CHECKERS
SDFS008A – D2932, APRIL 1986 – REVISED OCTOBER 1993
switching characteristics (see Note 2)
V
C
R
= 5 V,
= 50 pF,
= 500 Ω,
= 25°C
V
C
R
= 4.5 V to 5.5 V,
= 50 pF,
CC
L
L
CC
L
L
= 500Ω,
FROM
(INPUT)
TO
(OUTPUT)
†
PARAMETER
UNIT
T
A
T
A
= MIN to MAX
′F280B
TYP
6.1
SN54F280B
SN74F280B
MIN
3.2
3.2
3.2
3.2
MAX
9
MIN
2.7
2.7
2.7
2.7
MAX
13
MIN
2.7
2.7
2.7
2.7
MAX
10
t
t
t
t
PLH
PHL
PLH
PHL
Any input
Any input
Σ EVEN
Σ ODD
ns
ns
6.6
10
9
15
11
6.1
14
10
6.6
10
14
11
†
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
NOTE 2: Load circuits and waveforms are shown in Section 1.
2–4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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any product or service without notice, and advise customers to obtain the latest version of relevant information
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pertaining to warranty, patent infringement, and limitation of liability.
TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent
TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily
performed, except those mandated by government requirements.
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DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL
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Copyright 1998, Texas Instruments Incorporated
相关型号:
SN54F280BFKR
F/FAST SERIES, 9-BIT PARITY GENERATOR/CHECKER, COMPLEMENTARY OUTPUT, CQCC20, CERAMIC, LCC-20
TI
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