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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. The lower part numbers were established in the s and s, then higher datashete numbers were added incrementally over decades. Some of the manufacturers that make ddatasheet smaller IC chips are: Surface mount parts with a single gate often in a 5-pin or 6-pin package are prefixed with G instead of The “x” in the part number is a place holder for the logic family name.
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. In other projects Wikimedia Commons. 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 count.
Older discontinued parts datashert be available from a limited number of sellers as new old stock NOSthough some are much dqtasheet to find.
IC Datasheet: 74LS78
All chips in the following sections are available 4 datasheett 12 pin surface mount packages. This page was last edited on 27 Datashretat This article includes a list of referencesbut its sources remain unclear because it has insufficient inline citations.
For more details, refer primarily to the Texas Instruments documentation mentioned in the References section. 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. Views Read Edit View history. A short-lived 64 prefix on Texas Instruments parts indicated an industrial temperature range; datashert prefix had been dropped from the TI literature by PLA 12 74lx78, 50 terms, 6 outputs.
In a few instances, such as the andthe same suffix in different families do not have completely equivalent logic functions. IC manufacturers continue to make a core subset of this group, but many of these part numbers are considered obsolete and no longer manufactured. All chips in this section have one gate, noted by the “1G” in the part numbers.
Retrieved July 27, Not all functions are available in all families. Articles lacking in-text citations from June All articles lacking in-text citations.
Conversely, the series has “borrowed” from the series – such as the CD and CD being pin-for-pin functional replacements for 74C and 74C A few alphabetic characters to designate a specific logic subfamily may immediately follow the 74 or 54 in the part number, e. Digital electronics Electronic design Electronics lists Integrated circuits.
Parts in this section have a pin count of 14 pins or more.
List of series integrated circuits – Wikipedia
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 74ls8 of compatible parts. The following is a list of series digital logic integrated circuits. The original series integrated circuits were made by Texas Instruments with the prefix “SN” to create the name SN74xx.
ratasheet PLA 12 inputs, 32 terms, 6 outputs. Archived PDF from the original on July 9, All chips in this section have two gates, noted by the “2G” in the part numbers.
74LS78 Cross Reference
AND-gated positive edge triggered J-K flip-flopasynchronous preset and clear.
June Learn how and when to remove this template message. Datsaheet List of series integrated circuits. Please help to improve this article by introducing more precise citations. Some TTL logic parts were made with an extended military-specification temperature range.
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. All chips in this section have three gates, noted by the “3G” in the part numbers. However, different manufacturers will use different prefixes or no prefix at all. These parts are prefixed with 54 instead of 74 in the part number. Retrieved from ” https: