|
|
|
|
|||||||
| 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. |
 |
|
|
Thread Tools |
18th Nov 2022, 4:24 pm
|
#1 |
|
Pentode
Join Date: Nov 2009
Location: Cambridge, Cambridgeshire, UK.
Posts: 246
|
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 |
|
|
|
19th Nov 2022, 9:20 am
|
#2 |
|
Dekatron
Join Date: Apr 2019
Location: Worthing, West Sussex, UK.
Posts: 5,550
|
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 |
|
|
|
|
20th Nov 2022, 8:44 am
|
#3 |
|
Pentode
Join Date: Dec 2005
Location: Denton, Manchester, UK.
Posts: 153
|
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.
|
|
|
|
|
20th Nov 2022, 3:16 pm
|
#4 |
|
Pentode
Join Date: Nov 2009
Location: Cambridge, Cambridgeshire, UK.
Posts: 246
|
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. |
|
|
|
|
21st Nov 2022, 10:04 am
|
#5 |
|
Pentode
Join Date: Nov 2009
Location: Cambridge, Cambridgeshire, UK.
Posts: 246
|
Re: Ferranti part id
Update:
Littlediode says they are not 74L04's. |
|
|
|
|
21st Nov 2022, 2:58 pm
|
#6 |
|
Dekatron
Join Date: Apr 2019
Location: Worthing, West Sussex, UK.
Posts: 5,550
|
Re: Ferranti part id
Could they advise what it actually is or equivalent to ?
David |
|
|
|
|
21st Nov 2022, 3:28 pm
|
#7 |
|
Dekatron
Join Date: Aug 2011
Location: Newcastle, Tyne and Wear, UK.
Posts: 9,497
|
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/ |
|
|
|
|
21st Nov 2022, 4:22 pm
|
#8 | |
|
Pentode
Join Date: Nov 2009
Location: Cambridge, Cambridgeshire, UK.
Posts: 246
|
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. |
|
|
|
|
