Alternative to LM7856 voltage regulator?

Semiconductor Integrated Circuits (ICs)
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1

I’ve been working on a # of receivers lately, and it seems many of them use the LM78xx series voltage regulators, but one of the one’s I am looking for does not seem to be listed on DigiKey… DigiKey also does not even list a 5.6v in the “narrow search results” as an option.
The originals are JRC (Japan Radio):

JRC LM7865!
JRC LM7865!700×600 217 KB

The only “5.6v” I managed to find on Digikey was this:

I have no idea if this would work as an alternative since I can’t seem to find an actual real LM7856 data sheet as most of them are just general LM78xx data sheets with charts of various LM78’s but no 56 listed.

2

LT1585A is an outrageously expensive 5A adjustable voltage regulator so you’ll need to add parts to use it where a fixed voltage regulator was used. The DigiKey page says it has a maximum of 5.6V for the adjustment range (data sheet says it’s 5.75).

The 78xx series are fixed voltage 1A regulators so you also save a lot of cost by not using a 5A substitute circuit.

If you do go the adjustable route, I’d recommend the venerable LM317 as a lower cost alternative.