Omaha, NE
Several versions of 74HCT154 will work. Just make sure to get the DIP-24 package instead of a surface mount part.
(Topic ID: 269921)
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Pharaoh
Williams, 1981
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Ignore the prefix - it's just the manufacturer.
E.g. -- Most common:
SN prefix is most oftenly used by Texas Instruments but also occasionally Motorola during 1980s/1990s.
CD prefix was used by RCA, Harris and eventually Texas Instruments
Philips and NXP often didn't use a prefix.
Suffix states the type of part.
"N" and "P" are often used to indicate Plastic DIP type package.
The one in the photo is a 74LS154. Can use a 74HCT154 or 74154 although the 74154s are more difficult to locate.
74HC154 is a maybe. Like barakandl said -- depends on how it's used. If in doubt, safest bet is to avoid the 74HC154.
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