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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.
Older discontinued parts may be available from a limited number of 74lx78 as new old stock NOSthough some are much harder to find.
Datasheet Page , pdf datasheet & application note
This article includes a list of referencesbut its sources remain unclear because it has insufficient inline citations. Retrieved July 27, For more details, refer primarily to the Texas Instruments documentation mentioned in the References section. Not all functions are available in all families.
However, different manufacturers will use different prefixes or no prefix at all. IC manufacturers continue to make a core subset of this group, but many of these part numbers are considered obsolete and no longer dztasheet.
Articles lacking in-text citations from June All articles lacking in-text citations. A few alphabetic characters to designate a specific logic subfamily may immediately follow the 74 or 54 in the part number, e. PLA 12 inputs, 32 terms, 6 outputs, 4 state registers. PLA 12 inputs, 50 terms, 6 outputs. Parts in this section have a pin count of 14 pins or more.
Digital electronics Electronic design Electronics lists Integrated circuits. See List of series integrated circuits. List of books about series integrated circuits. Conversely, the series has “borrowed” from the series – such as the CD and CD being pin-for-pin functional replacements for 74C and 74C 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.
All chips in the following sections are available 4 to 12 pin surface mount packages. Views Read Edit View history. Surface mount parts with a single gate often in a 5-pin or 6-pin package are prefixed with G instead of 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.
The following is a list of series digital logic integrated circuits. All chips in this section have two gates, noted by the “2G” in the part numbers.
List of 7400-series integrated circuits
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. Please help to improve this article by introducing more precise citations. All chips in this section have three gates, noted by the “3G” in the part numbers.
All chips in this section have one gate, noted by the “1G” in the part numbers. This page was last edited on 27 Novemberat Retrieved from ” https: As board designs have migrated away from daatsheet amounts of logic chips, so has the need for many of the same gate in one package.
By using this site, you agree to the Terms of Use and Privacy Policy. The lower part numbers were established in the s and s, then higher part numbers were added 744ls78 over decades.
From Wikipedia, the free encyclopedia.
74LS78 – MIT – IC Chips – Kynix Semiconductor
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. The original series integrated circuits were made by Texas Instruments with the prefix “SN” to create the name SN74xx.
A short-lived 64 prefix on Texas Instruments parts indicated an industrial temperature range; this prefix had been dropped from the TI literature by June Learn how and when to remove this template message. The “x” in the part number is a place holder for the logic family name. These parts are prefixed with 54 instead of 74 in the part number.
PLA 12 inputs, 32 terms, 6 outputs. Some of the manufacturers that make these smaller IC chips are: Archived PDF from the original on July 9,