SN54F280B_12 Datasheet, PDF (1/7 Pages) Texas Instruments – 9-BIT PARITY GENERATORS/CHECKERS

• 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
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
OUTPUTS
Σ EVEN
H
Σ ODD
L
1, 3, 5, 7, 9
L
H
logic symbol^†
SN54F280B, SN74F280B
9ĆBIT PARITY GENERATORS/CHECKERS
ą
SDFS008A − D2932, APRIL 1986 − REVISED OCTOBER 1993
SN54F280B . . . J PACKAGE
SN74F280B . . . D OR N PACKAGE
(TOP VIEW)
G1
H2
NC 3
I4
Σ EVEN 5
Σ ODD 6
GND 7
14 V_CC
13 F
12 E
11 D
10 C
9B
8A
SN54F280B . . . FK PACKAGE
(TOP VIEW)
NC
NC
I
NC
Σ EVEN
3 2 1 20 19
4
18
E
5
17 ^NC
6
16 D
7
15 NC
8
14 C
9 10 11 12 13
NC − No internal connection
8
2k
A
9
B
10
C
11
D
12
E
13
F
1
G
2
H
4
I
5
Σ EVEN
6
Σ ODD
† _{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.
Copyright  1993, Texas Instruments Incorporated
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
• POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
2−1