Looking for a datasheet for an old MP2807NLHL Digital Alarm Clock IC

KI UK LEE

Prodigy 20 points

I can't find a datasheet anywhere on the web for this variant. (MP2807NLHL)

I would like to know if it is possible for me to get a copy of the datasheet as I am Hz change 50Hz -> 60Hz.

over 5 years ago

0 Ed Walker over 5 years ago

Prodigy 5 points

Hello KI UK LEE,

None of the TI archive references show a part number like this one.

However, it is likely based on the TMS3450NL from the referred post.
I wouldn’t think TI would stray too far from the standard version of a part like that.

Both are 28 pin large DIP.

Using the TMS3450NL datasheet as a reference, I would scope the pin that corresponds to the 50/60Hz.
Pin 26 is 50/60Hz Select

For 60Hz it is No /Connect
0825.TMS3450NL sxas015 (1).pdf

0 KI UK LEE over 5 years ago in reply to Ed Walker

Prodigy 20 points

Thank you EdWalker for repaly..

I did pin26 disconnected.. but is works not.

It seems not same TMS3450NL, MP2807NLHL

0 Ed Walker over 5 years ago in reply to KI UK LEE

Prodigy 5 points

Hello KI UK LEE,

TI does not have any more information that can help your investigation.
Perhaps someone else who views this thread may be able to assist.

Clock & timing

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Looking for a datasheet for an old MP2807NLHL Digital Alarm Clock IC