DM74AS280N

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DM74AS280
Typical Applications
Three DM74AS280s can be used to implement a 25-line
parity generator/checker.
As an alternative, the outputs of two or three parity genera-
tors/checkers can be decoded with a 2-input (AS86) or 3-
input (S135) exclusive-OR gate for 18 or 27-line parity
applications.
Longer word lengths can be implemented by cascading
DM74AS280s. As shown in Figure 2, parity can be gener-
ated for word lengths up to 81 bits.
FIGURE 1. 25-Line
Parity/Generator Checker
FIGURE 2. 81-Line Parity/Generator Checker
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DM74AS280
Physical Dimensions inches (millimeters) unless otherwise noted
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow
Package Number M14A
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DM74AS280 9-Bit Parity Generator/Checker
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Package Number N14A
Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and
Fairchild reserves the right at any time without notice to change said circuitry and specifications.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD
SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the
body, or (b) support or sustain life, and (c) whose failure
to perform when properly used in accordance with
instructions for use provided in the labeling, can be rea-
sonably expected to result in a significant injury to the
user.
2. A critical component in any component of a life support
device or system whose failure to perform can be rea-
sonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
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DM74AS280N

Mfr. #:
Manufacturer:
ON Semiconductor / Fairchild
Description:
Parity Functions 9-Bit Par Gen/Check
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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