SN54F280B, SN74F280B
9 BIT PARITY GENERATORS/CHECKERS
SDFS008A − D2932, APRIL 1986 − REVISED OCTOBER 1993
•
•
•
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
SN54F280B . . . J PACKAGE
SN74F280B . . . D OR N PACKAGE
(TOP VIEW)
description
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.
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.
FUNCTION TABLE
NO. OF INPUTS
A THRU I
THAT ARE HIGH
0, 2, 4, 6, 8
1, 3, 5, 7, 9
OUTPUTS
Σ
EVEN
H
L
Σ
ODD
L
H
G
H
NC
I
Σ
EVEN
Σ
ODD
GND
1
2
3
4
5
6
7
14
13
12
11
10
9
8
V
CC
F
E
D
C
B
A
SN54F280B . . . FK PACKAGE
(TOP VIEW)
NC
NC
I
NC
Σ
EVEN
4
5
6
7
8
3 2 1 20 19
18
17
16
15
14
9 10 11 12 13
H
G
NC
VCC
F
E
NC
D
NC
C
NC − No internal connection
2k
5
Σ
EVEN
6
Σ
ODD
Copyright
1993, Texas Instruments Incorporated
logic symbol
†
8
9
10
11
12
13
1
2
4
A
B
C
D
E
F
G
H
I
† 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.
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.
POST OFFICE BOX 655303
POST OFFICE BOX 1443
•
HOUSTON, TEXAS 77251−1443
•
DALLAS, TEXAS 75265
Σ
ODD
GND
NC
A
B
2−1
SN54F280B, SN74F280B
9 BIT PARITY GENERATORS/CHECKERS
SDFS008A − D2932, APRIL 1986 − REVISED OCTOBER 1993
logic diagram (positive logic)
A
8
B
9
C
10
5
Σ
EVEN
D
11
E
12
F
13
6
Σ
ODD
G
1
H
2
I
4
Pin numbers shown are for the D, J, and N packages.
2−2
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
•
•
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
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V
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
MIN
VCC
VIH
VIL
IIK
IOH
IOL
TA
Supply voltage
High-level input voltage
Low-level input voltage
Input clamp current
High-level output current
Low-level output current
Operating free-air temperature
−55
4.5
2
0.8
−18
−1
20
125
0
NOM
5
MAX
5.5
SN74F280B
MIN
4.5
2
0.8
−18
−1
20
70
NOM
5
MAX
5.5
UNIT
V
V
V
mA
mA
mA
°C
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
VIK
VOH
VOL
II
IIH
IIL
IOS§
ICC
VCC = 4.5 V,
VCC = 4.5 V
VCC = 4.75 V,
VCC = 4.5 V
VCC = 0,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
TEST CONDITIONS
II = − 18 mA
IOH = − 1 mA
IOH = − 1 mA
IOL = 20 mA
VI = 7 V
VI = 2.7 V
VI = 0.5 V
VO = 0
−60
SN54F280B
MIN TYP‡
MAX
−1.2
2.5
3.4
0.3
0.5
0.1
20
− 20
−150
−60
2.5
2.7
0.3
0.5
0.1
20
− 20
−150
35
3.4
V
V
mA
µA
µA
mA
mA
SN74F280B
MIN TYP‡
MAX
−1.2
UNIT
V
VCC = 5.5 V,
VI = 0
26
35
26
‡ All typical values are at VCC = 5 V, TA = 25°C.
§ Not more than one output should be shorted at a time, and the duration of the short circuit should not exceed one second.
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
•
•
2−3
SN54F280B, SN74F280B
9 BIT PARITY GENERATORS/CHECKERS
SDFS008A − D2932, APRIL 1986 − REVISED OCTOBER 1993
switching characteristics (see Note 2)
VCC = 5 V,
CL = 50 pF,
RL = 500
Ω,
TA = 25°C
′F280B
MIN
tPLH
tPHL
tPLH
tPHL
Any input
Any input
Σ
EVEN
Σ
ODD
3.2
3.2
3.2
3.2
TYP
6.1
6.6
6.1
6.6
MAX
9
10
9
10
VCC = 4.5 V to 5.5 V,
CL = 50 pF,
RL = 500
Ω,
TA = MIN to MAX†
SN54F280B
MIN
2.7
2.7
2.7
2.7
MAX
13
15
14
14
SN74F280B
MIN
2.7
2.7
2.7
2.7
MAX
10
11
10
11
ns
ns
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
UNIT
† 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
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
•
•
PACKAGE MATERIALS INFORMATION
www.ti.com
11-Mar-2008
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device
Package Package Pins
Type Drawing
SOIC
SO
D
NS
14
14
SPQ
Reel
Reel
Diameter Width
(mm) W1 (mm)
330.0
330.0
16.4
16.4
A0 (mm)
B0 (mm)
K0 (mm)
P1
(mm)
8.0
12.0
W
Pin1
(mm) Quadrant
16.0
16.0
Q1
Q1
SN74F280BDR
SN74F280BNSR
2500
2000
6.5
8.2
9.0
10.5
2.1
2.5
Pack Materials-Page 1