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| Components and Circuits For discussions about component types, alternatives and availability, circuit configurations and modifications etc. Discussions here should be of a general nature and not about specific sets. |
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Thread Tools |
18th Nov 2022, 5:24 pm
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#1 |
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Hexode
Join Date: Nov 2009
Location: Cambridge, Cambridgeshire, UK.
Posts: 494
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Ferranti part id
I have a D34L04A Ferranti IC and cannot find any info on it apart from it may be ex aircraft use.
Could it be a Ferranti equivalent of a 74L04? Mark |
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19th Nov 2022, 10:20 am
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#2 |
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Dekatron
Join Date: Apr 2019
Location: Worthing, West Sussex, UK.
Posts: 6,600
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Re: Ferranti part id
I see that the eBay seller "Littlediode" is selling a Generic version of it, maybe a message/email to them asking may confirm it is the 74L04.
David |
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20th Nov 2022, 9:44 am
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#3 |
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Pentode
Join Date: Dec 2005
Location: Denton, Manchester, UK.
Posts: 187
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Re: Ferranti part id
If this device is in a ceramic package it will be equivalent to 74L series.Large quantities of these types were supplied to the Post Office (BT) half a century ago for System X exchange equipment. The chips used the CDI process in manufacture and were Low Power (L) devices.
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20th Nov 2022, 4:16 pm
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#4 |
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Hexode
Join Date: Nov 2009
Location: Cambridge, Cambridgeshire, UK.
Posts: 494
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Re: Ferranti part id
Thanks people.
I've sent a message to littlediode. It is a ceramic package, so very likely an 04. I may just apply some power and see if it inverts the inputs. |
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21st Nov 2022, 11:04 am
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#5 |
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Hexode
Join Date: Nov 2009
Location: Cambridge, Cambridgeshire, UK.
Posts: 494
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Re: Ferranti part id
Update:
Littlediode says they are not 74L04's. |
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21st Nov 2022, 3:58 pm
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#6 |
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Dekatron
Join Date: Apr 2019
Location: Worthing, West Sussex, UK.
Posts: 6,600
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Re: Ferranti part id
Could they advise what it actually is or equivalent to ?
David |
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21st Nov 2022, 4:28 pm
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#7 |
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Dekatron
Join Date: Aug 2011
Location: Newcastle, Tyne and Wear, UK.
Posts: 11,556
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Re: Ferranti part id
This 'parts supplier' website suggests that the D34L04 is a hex inverter suggesting that it -may- be pin compatible with other '04' hex inverters.
https://www.afrenterprises.com/rfq/hex-inverter/d34l04/ |
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21st Nov 2022, 5:22 pm
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#8 | |
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Hexode
Join Date: Nov 2009
Location: Cambridge, Cambridgeshire, UK.
Posts: 494
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Re: Ferranti part id
Quote:
They were rather abrupt in their reply so I didn't hassle them further. I don't trust them anyway having had fakes from them before. I'm more inclined to believe they are hex inverters. I've quite a few oddly marked ferranti ic's acquired back in the 80's. Most are memory chips. |
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