Replace TA7774P engine controller

[Retro collector]

Hi!
The engine controller burned out in the 800k floppy drive in a Macintosh Plus. Is there any other engine controller what I can buy and use to replace the TA7774P?

 

[MacTech68]

Hi!
The engine controller burned out in the 800k floppy drive in a Macintosh Plus. Is there any other engine controller what I can buy and use to replace the TA7774P?

Refresh my memory, is that the thru hole 16 pin version or surface mount of the stepper motor driver?

There do appear to be eBay sellers with small quantities of all 3 case styles, (P) (F) & (FAG)

 

[Retro collector]

Dip 16, so the drilled hole. I ordered from Aliexpress, but it won't arrive until March. Until then, I would try to buy a replacement in Hungary, but I can't find a replacement: ((

 

[MacTech68]

There are two sellers on eBay in Germany.

IC BAUSTEIN TA7774P 17904-132 | eBay

IC BAUSTEIN. ART. 17904. BAUSTEINE KÖNNEN LAGERBEDINGTE OPTISCHE BEEINTRÄCHTIGUNGEN VORWEISEN! (STAUB,KRATZER, ANSCHLUSSBEINE "ANGELAUFEN"UND VERBOGEN SEIN. KEINE AUSWAHL-MÖGLICHKEIT! ANGEGEBENE VERGLEICHSTYPEN OHNE GEWÄHR! ).

www.ebay.co.uk

TA7774P Stepping Motor Driver IC DIP16 NOS #BP | eBay

Our parts are new and unused.

www.ebay.co.uk

And on a quick search, this blog appears to indicate that buying via eBay from EU is possible (please forgive my ignorance if this is unhelpful).

ebay in Hungary: Shipping & Hungarian eBay Website in English

www.elftronix.com

 

[Retro collector]

There are two sellers on eBay in Germany.

IC BAUSTEIN TA7774P 17904-132 | eBay

IC BAUSTEIN. ART. 17904. BAUSTEINE KÖNNEN LAGERBEDINGTE OPTISCHE BEEINTRÄCHTIGUNGEN VORWEISEN! (STAUB,KRATZER, ANSCHLUSSBEINE "ANGELAUFEN"UND VERBOGEN SEIN. KEINE AUSWAHL-MÖGLICHKEIT! ANGEGEBENE VERGLEICHSTYPEN OHNE GEWÄHR! ).

www.ebay.co.uk

TA7774P Stepping Motor Driver IC DIP16 NOS #BP | eBay

Our parts are new and unused.

www.ebay.co.uk

And on a quick search, this blog appears to indicate that buying via eBay from EU is possible (please forgive my ignorance if this is unhelpful).

ebay in Hungary: Shipping & Hungarian eBay Website in English

www.elftronix.com

I am looking for a replacement to find one that is still manufactured and available at the electronics store. So I don’t have to wait for something I order, I just go and buy it. I know they sell on ebay too.

 

[MacTech68]

I doubt you'll find an equivalent still manufactured today.

For completeness, it appears the Hitachi HA13421A is a direct replacement for the Toshiba TA7774P, but equally no longer manufactured.

 

[Retro collector]

Thanks for your help, I'll have to wait until March ((