SDLS152 - DECEMBER 1972 - REVISED MARCH 1988
PRODUCTION DATA documents contain information current as of publicationdate. Products conform to specifications per the terms of Texas Instrumentsstandard warranty. Production processing does not necessarily include testingof all parameters.
These universal, monolithic, nine-bit parity generators/checkers utilizeSchottky-clamped TTL high-performance circuitry and feature odd/even outputsto facilitate operation of either odd or even parity application. The word-lengthcapability is easily expanded by cascading as shown under typical applicationdata.
Series 54LS/74LS and Series 54S/74S parity generators/checkers offer thedesigner a trade-off between reduced power consumption and high performance.These devices can be used to upgrade the performance of most systems utilizingthe '180 parity generator/checker. Although the 'LS280 and 'S280 are implementedwithout expander inputs, the corresponding function is provided by the availabilityof an input at pin 4 and the absence of any internal connection at pin 3.This permits the 'LS280 and 'S280 to be substituted for the '180 in existingdesigns to produce an identical function even if 'LS280's and 'S280's aremixed with existing '180's.
These devices are fully compatible with most other TTL circuits. All 'LS280and 'S280 inputs are buffered to lower the drive requirements to one Series54LS/74LS or Series 54S/74S standard load, respectively.
View more information about generic part numbers:SN54LS280, SN54S280, SN74LS280, SN74S280
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