6 Dec
2006
6 Dec
'06
7:35 p.m.
I've come across a few old ICs and haven't been able to find out much
about them - lots of places on the 'net are willing to sell them but I
couldn't find a data sheet - only one clue that they _might_ be dual
op-amps. They are small cans (TO-??) with eight leads protruding from
the bottom, marked SG 1458T with a 1976 date code. Any help identifying
them would be appreciated. Kind of hoping they're really some sort of
shift register ...
Thanks,
Jack
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12/5/2006 4:07 PM
6 Dec
6 Dec
7:47 p.m.
From: "Jack Rubin" <jack.rubin at ameritech.net>
I've come across a few old ICs and haven't
been able to find out much
about them - lots of places on the 'net are willing to sell them but I
couldn't find a data sheet - only one clue that they _might_ be dual
op-amps. They are small cans (TO-??) with eight leads protruding from
the bottom, marked SG 1458T with a 1976 date code. Any help identifying
them would be appreciated. Kind of hoping they're really some sort of
shift register ...
Here's an overview:
http://www.datasheets.org.uk/specsheet.php?part=SG1458T
Looks like it's a dual op amp.
Vince
8 p.m.
I've come across a few old ICs and haven't
been able to find out much
about them - lots of places on the 'net are willing to sell them but I
couldn't find a data sheet - only one clue that they _might_ be dual
op-amps. They are small cans (TO-??) with eight leads protruding from
the bottom, marked SG 1458T with a 1976 date code. Any help identifying
them would be appreciated. Kind of hoping they're really some sort of
shift register ...
Yes, it is a dual op amp, Silicon General 1458. Standard stuff, but
worth saving.
--
Will
7 Dec
7 Dec
8:44 a.m.
On Dec 6, 2006, at 10:35 PM, Jack Rubin wrote:
I've come across a few old ICs and haven't
been able to find out much
about them - lots of places on the 'net are willing to sell them but I
couldn't find a data sheet - only one clue that they _might_ be dual
op-amps. They are small cans (TO-??) with eight leads protruding from
the bottom, marked SG 1458T with a 1976 date code. Any help
identifying
them would be appreciated. Kind of hoping they're really some sort of
shift register ...
1458 is the "base" number for a frequently second-sourced dual op-
amp. It is basically a dual 741. That package is most like a TO-99.
-Dave
--
Dave McGuire
Cape Coral, FL
8:59 a.m.
Thanks Dave, that info is consistent with the fragmentary identification I found. Oh well,
looks like I won't be building a shift-register memory device with these!
Jack
Dave McGuire <mcguire at neurotica.com> wrote: On Dec 6, 2006, at 10:35 PM, Jack
Rubin wrote:
I've come across a few old ICs and haven't
been able to find out much
about them - lots of places on the 'net are willing to sell them but I
couldn't find a data sheet - only one clue that they _might_ be dual
op-amps. They are small cans (TO-??) with eight leads protruding from
the bottom, marked SG 1458T with a 1976 date code. Any help
identifying
them would be appreciated. Kind of hoping they're really some sort of
shift register ...
1458 is the "base" number for a frequently second-sourced dual op-
amp. It is basically a dual 741. That package is most like a TO-99.
-Dave
--
Dave McGuire
Cape Coral, FL
4:36 p.m.
I've come across a few old ICs and haven't been able to find out much
about them - lots of places on the 'net are willing to sell them but I
couldn't find a data sheet - only one clue that they _might_ be dual
op-amps. They are small cans (TO-??) with eight leads protruding from
the bottom, marked SG 1458T with a 1976 date code. Any help identifying
them would be appreciated. Kind of hoping they're really some sort of
shift register ...
Alas I think they're just plain 1458 dual op-amps. A very common device
(probably more common in an 8 pin DIP).
-tony
6906
days inactive
6907
days old
6 comments
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participants (5)
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