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Mike Jones
Joined: 28 May 2007
Posts: 13
Location: Wichita, Kansas
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 Posted: Fri Nov 27, 2009 9:42 pm Post subject: Motorola chips |
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Anyone now about these two chips? description and numbers:
SC12013 / 7420 below first number / White ceramic / Gold top cover and legs / 16 pin
SC63317L / 7434 below the first number / White ceramic / Gold top cover and legs / 16 pin
Both Motorola. |
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kosmokrator
Joined: 03 Jul 2008
Posts: 4085
Location: Athens-GR
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| Posted: Sat Nov 28, 2009 3:00 am Post subject: |
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replace the SC with MC.....
and u will find the info...
SC12013 = dual modulus prescaler
SC63317L = not know.... |
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donutty
Joined: 16 Feb 2008
Posts: 1122
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| Posted: Sat Nov 28, 2009 4:47 am Post subject: |
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| kosmokrator wrote: | replace the SC with MC.....
and u will find the info...
SC12013 = dual modulus prescaler
SC63317L = not know.... |
Hi Kosmo
Is that a general rule; replace the SC with MC ? I thought SC was a custom chip (or maybe just custom marked). Would be useful if this rule was just that simple!  |
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debs3759
Joined: 18 Jan 2006
Posts: 9477
Location: Northampton, Divided Kingdom
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| Posted: Sat Nov 28, 2009 7:15 am Post subject: |
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No, it's not as simple as replacing the SC with MC. SC part numers are all custom part numbers, and there are not many sources for finding full info on what SC part number corresponds to what MC part number.
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Mike Jones
Joined: 28 May 2007
Posts: 13
Location: Wichita, Kansas
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| Posted: Sat Nov 28, 2009 8:27 pm Post subject: Pic |
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Here is a pic of the two.
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magictom
Joined: 14 May 2009
Posts: 2281
Location: Hawaii
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| Posted: Sat Nov 28, 2009 10:17 pm Post subject: |
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| Looks like the XC12013 is a pre-production chip of the MC12013, which is an ECL "Dual-modulus prescalar for PLL". Amazingly for 1974 chip, it was running at 500 MHz frequency ... it shows how good the Motorola ECL stuff was back then |
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Mike Jones
Joined: 28 May 2007
Posts: 13
Location: Wichita, Kansas
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| Posted: Sun Nov 29, 2009 9:47 am Post subject: |
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| Thanks for the info. Wasn't quite sure what they were. |
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Charlyincanada
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| Posted: Sun Dec 13, 2009 11:29 pm Post subject: MC12017- TWO MODULUS PRESCALER (DIVIDE 64/65) 225 Mhz |
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| Mike Jones wrote: | | Thanks for the info. Wasn't quite sure what they were. |
SC12017 IS ?MC12017- TWO MODULUS PRESCALER (DIVIDE 64/65) 225 Mhz AS PER IC MASTER 1984 |
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Charlyincanada
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| Posted: Sun Dec 13, 2009 11:31 pm Post subject: Re: MC12013- TWO MODULUS PRESCALER (DIVIDE 10/11) |
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| Charlyincanada wrote: | | Mike Jones wrote: | | Thanks for the info. Wasn't quite sure what they were. |
SC12017 IS ?MC12017- TWO MODULUS PRESCALER (DIVIDE 64/65) 225 Mhz AS PER IC MASTER 1984 |
MC12013- TWO MODULUS PRESCALER (DIVIDE 10/11) |
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