Replacement for N8T97B

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Replacement for N8T97B

I have found it very hard to find info on the N8T97B.  What is the difference between the N8T97B and N8T97N? Are they interchangeable on the Apple 1?

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Can't tell you without a

Can't tell you without a datasheet... but during my search I found this....

http://www.weisd.com/Mobile/MobTop.php?PN=N8T97B

 

not sure if it's a 100% equivalent... but that's worse when seeing the price. So it might be an option.

 

Update:

According the following link the replacement as well as the N8T97N should work for you.

https://vetco.net/products/nte6887-ic-3-state-hex-buffer-inverter

 

 

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Can't say for sure without

Can't say for sure without seeing the exact data sheet for the specific part, but the last letter is often the package type, with N often standing for plastic DIP.   B might be ceramic DIP, but that is more conjecture than anything.  Keep in mind it varies with manufacturer and over time.

 

regards,

Mike Willegal

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Thanks for the replies.  I

Thanks for the replies.  I can’t seem to find a good data sheet for the B, so if anyone does, please link it.

 

For historical records I will paste the compatibility info that tokabln found:

 

NTE Part Number: NTE6887
Description: IC-SCHOTTKY HEX HI SPEED

This part is the equivalent replacement for the following:
1820-1884, 3841045, 5A-8989, 8T97, ECG6887, F5887PC, MC6887, MC6887L, MC6887P, MC8T97, MC8T97L, MC8T97P, N5887N, N8T97, N8T97B, N8T97F, N8T97N, NTE6887, SK9700, SK9700/6887

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Both the B or N will work, so

Both the B or N will work, so will a 74367 chip.  In fact when I test 8T97 chips with my TTL tester, they are detected as 74367 chips.

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Both the B or N will work, so

Both the B or N will work, so will a 74367 chip.  In fact when I test 8T97 chips with my TTL tester, they are detected as 74367 chips.

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I've had issues with 74*367

I've had issues with 74*367 chips.  Some of them will work, some may have issues in a heavily loaded machine with lots of cards in it.

 

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Ok, I'm confused.  There

Ok, I'm confused.  There generally is the most two cards in an apple-1, the ACI and something hanging off the edge connector like a basic PROM card.   Or do you mean when you use 74367 chips in an Apple II series.

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Woops, sorry, yes,

Woops, sorry, yes, substituting 74LS367 for 8T97 in an Apple II can be problematic, I totally missed that this was about an Apple 1.  I don't know if the speed/load issue that is encountered on the Apple II is a problem for the Apple 1.  But it definitely isn't a 100% exact substitute.  I think I was able to get either 74S367 or 74H367 to make it work in a ][+, but it is better to use an 8T97 if you can.

 

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