UK Vintage Radio Repair and Restoration Powered By Google Custom Search Vintage Radio and TV Service Data

Go Back   UK Vintage Radio Repair and Restoration Discussion Forum > General Vintage Technology > Components and Circuits

Notices

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.

Reply
 
Thread Tools
Old 18th Nov 2022, 4:24 pm   #1
bigfathairyvika
Pentode
 
bigfathairyvika's Avatar
 
Join Date: Nov 2009
Location: Cambridge, Cambridgeshire, UK.
Posts: 246
Default 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
bigfathairyvika is offline   Reply With Quote
Old 19th Nov 2022, 9:20 am   #2
DMcMahon
Dekatron
 
DMcMahon's Avatar
 
Join Date: Apr 2019
Location: Worthing, West Sussex, UK.
Posts: 5,550
Default 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
DMcMahon is offline   Reply With Quote
Old 20th Nov 2022, 8:44 am   #3
Bill
Pentode
 
Join Date: Dec 2005
Location: Denton, Manchester, UK.
Posts: 153
Default 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.
Bill is offline   Reply With Quote
Old 20th Nov 2022, 3:16 pm   #4
bigfathairyvika
Pentode
 
bigfathairyvika's Avatar
 
Join Date: Nov 2009
Location: Cambridge, Cambridgeshire, UK.
Posts: 246
Default 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.
bigfathairyvika is offline   Reply With Quote
Old 21st Nov 2022, 10:04 am   #5
bigfathairyvika
Pentode
 
bigfathairyvika's Avatar
 
Join Date: Nov 2009
Location: Cambridge, Cambridgeshire, UK.
Posts: 246
Default Re: Ferranti part id

Update:
Littlediode says they are not 74L04's.
bigfathairyvika is offline   Reply With Quote
Old 21st Nov 2022, 2:58 pm   #6
DMcMahon
Dekatron
 
DMcMahon's Avatar
 
Join Date: Apr 2019
Location: Worthing, West Sussex, UK.
Posts: 5,550
Default Re: Ferranti part id

Could they advise what it actually is or equivalent to ?

David
DMcMahon is offline   Reply With Quote
Old 21st Nov 2022, 3:28 pm   #7
SiriusHardware
Dekatron
 
Join Date: Aug 2011
Location: Newcastle, Tyne and Wear, UK.
Posts: 9,497
Default 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/
SiriusHardware is offline   Reply With Quote
Old 21st Nov 2022, 4:22 pm   #8
bigfathairyvika
Pentode
 
bigfathairyvika's Avatar
 
Join Date: Nov 2009
Location: Cambridge, Cambridgeshire, UK.
Posts: 246
Default Re: Ferranti part id

Quote:
Originally Posted by DMcMahon View Post
Could they advise what it actually is or equivalent to ?

David

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.
bigfathairyvika is offline   Reply With Quote
Reply

Thread Tools



All times are GMT. The time now is 9:41 am.


All information and advice on this forum is subject to the WARNING AND DISCLAIMER located at https://www.vintage-radio.net/rules.html.
Failure to heed this warning may result in death or serious injury to yourself and/or others.


Powered by vBulletin®
Copyright ©2000 - 2023, vBulletin Solutions, Inc.
Copyright ©2002 - 2023, Paul Stenning.