Author Topic: Identify integrated circuits SN49730N, SN49829N, SN49840N  (Read 690 times)

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Offline GreybeardTopic starter

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Identify integrated circuits SN49730N, SN49829N, SN49840N
« on: January 14, 2025, 12:45:30 pm »
Can anybody identify these integrated circuits, please?
« Last Edit: January 15, 2025, 12:24:27 am by Greybeard »
 

Offline Harry_22

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Re: Identify integrated circuit SN49730N, SN49829N, SN49840N
« Reply #1 on: January 14, 2025, 07:40:26 pm »
Hi!

SN49829N = FLH255
 
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Offline aeg

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Re: Identify integrated circuits SN49730N, SN49829N, SN49840N
« Reply #2 on: January 15, 2025, 01:03:19 am »
Wow! I never heard of SN49 series. Maybe it was only marketed in Germany?

It was covered in a databook, so it's a standard series, not house-numbered parts: https://www.antikvarium.hu/konyv/pocket-guide-901729-0

There is some information on a Russian website: http://www.155la3.ru/sn49xxx.htm

According to the site, SN498xx is the extended-temperature version of SN49xx.

Rainer Knaepper posted some scans from the 1979 databook: http://web.archive.org/web/20080620204134/http://www.smial.prima.de/elektronisches.html

Unfortunately, nothing about SN49730N or SN49840N.
 
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Offline GreybeardTopic starter

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Re: Identify integrated circuits SN49730N, SN49829N, SN49840N
« Reply #3 on: January 15, 2025, 07:02:42 pm »
Wow! I never heard of SN49 series. Maybe it was only marketed in Germany?
I don't think so, because manufacturer is TI.
Siemens TTL are marked FLH, FLJ, FLK, FZH, FZJ...
 

Offline fzabkar

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Re: Identify integrated circuits SN49730N, SN49829N, SN49840N
« Reply #4 on: January 17, 2025, 01:11:57 am »
https://www.synfo.nl/datasheets/SIEMENS_1976-1977_%20ANALOG-INTEGRATED-CIRCUITS.pdf

    4930 = FLH321 = quadruple 2-input NAND-powergate

From the .ru site (thanks @aeg), 49730 and 49830 are different temperature grades of the 4930.

https://web.archive.org/web/20041227065139/http://www.smial.prima.de/download/sn49xxx/sn4930.gif
« Last Edit: January 17, 2025, 01:16:02 am by fzabkar »
 
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Offline GreybeardTopic starter

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Re: Identify integrated circuits SN49730N, SN49829N, SN49840N
« Reply #5 on: January 19, 2025, 08:56:10 pm »
Unfortunately, the Russian website seems to be unavailable (timeout).
Maybe blocked by our best friend Wladimir...
« Last Edit: January 19, 2025, 08:57:52 pm by Greybeard »
 

Offline fzabkar

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Re: Identify integrated circuits SN49730N, SN49829N, SN49840N
« Reply #6 on: January 19, 2025, 09:00:26 pm »
Unfortunately, the Russian website seems to be unavailable (timeout).
Maybe blocked by our best friend Wladimir...

https://web.archive.org/web/20240418205721/http://155la3.ru/sn49xxx.htm
 
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Offline GreybeardTopic starter

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Re: Identify integrated circuits SN49730N, SN49829N, SN49840N
« Reply #7 on: January 21, 2025, 11:18:10 pm »
Thanks to all of you.  :-+
 


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