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Some of the manufacturers that make these smaller IC chips are: Some xxx parts, however, do not have a direct counterpart from the standard 74xxx range but deliver new functionality instead, which needs making use of the xxx series’ higher pin datahseet.
74LS78 Cross Reference,74LS78 Datasheet,74LS78 PDF –
Surface mount parts with a single gate often in a 5-pin or 6-pin package are prefixed with G instead of PLA 12 inputs, 50 terms, 6 outputs. In 744ls78 projects Wikimedia Commons. Retrieved from ” https: Articles lacking in-text citations from June All articles lacking in-text citations. See List of series integrated circuits. The “x” in the part number is a place holder for the logic family name.
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The original series integrated circuits were made by Texas Instruments with the prefix “SN” to create the name SN74xx. List of books about series integrated circuits. Some manufacturers released some series equivalent CMOS circuits with a 74 prefix, for example the 74HC was a replacement for the with slightly different electrical characteristics different power supply voltage ratings, higher frequency capabilities, lower “on” resistances in analog switches, etc.
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IC manufacturers continue to make a core subset of this group, but many of these part numbers are considered obsolete and no longer manufactured. Archived PDF from the original on July 9, All chips in this section have one gate, noted by the “1G” in the part numbers. A short-lived 64 prefix on Texas 74lw78 parts indicated an industrial temperature range; this prefix had been dropped from the TI literature by PLA 12 inputs, 32 terms, 6 outputs, 4 state registers.
Conversely, the series has “borrowed” from the series – such as the CD and CD being pin-for-pin functional replacements for 74C and 74C Retrieved July 27, PLA 12 inputs, 32 terms, 6 outputs.
Due to the popularity of these parts, other manufacturers have released pin-to-pin compatible devices which kept the sequence number as an aid to identification of compatible parts. A few alphabetic characters to designate a specific logic subfamily may immediately follow the 74 or 54 in the part number, e. These parts are prefixed with 54 instead of 74 in the part number. Not all functions are available in all families. However, datssheet manufacturers will use different prefixes or no prefix at all.
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Please help to improve this article by introducing more precise citations. The following is a list of series digital logic integrated circuits. All chips in this section have two gates, datasheer by the “2G” in the part numbers.
For more details, refer primarily to the Texas Instruments documentation mentioned in the References section.
This page was last edited on 27 Datasheefat Digital electronics Electronic design Electronics lists Integrated circuits. All chips in this section have three gates, noted by the “3G” in the part numbers. Now logic can be placed where it is physically needed on a board, instead of running long signal traces to a full-size logic chip that has many of the same gate.
All chips in the following sections are available 4 to 12 pin surface mount packages. The lower part numbers were established in the s and s, then higher part numbers were added incrementally over decades.
IC Datasheet: 74LS78
As board designs have migrated away from large amounts of logic chips, so has the need for many of the same gate in one package. AND-gated positive edge triggered J-K flip-flopasynchronous preset and clear.
In a few instances, such as the andthe same suffix in different families do not have completely equivalent logic functions. Another extension to the series is the xxx variant, representing mostly the bit wide counterpart of otherwise 8-bit-wide “base” chips with the same three ending digits.
Some TTL logic parts were made with an extended military-specification temperature range. This article includes a list of referencesbut its sources remain unclear because it has insufficient inline citations. Older discontinued parts may be available from a limited number of sellers as new old stock NOSthough some are much harder to find.