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Old 15th August 2006, 07:15 AM   #1
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Default Need a Quad 2-input AND gate

...ought to be simple, right? I have what is labled a Mitsubishi M53200P 14-pin DIP IC, running on a 5V supply. Seems as if this chip is intermittent, so I went to get a replacement. Holy-Moley! I haven't done anything with digital in years, and there's a zillion different chips that fit this basic description. Why I thought I could just order up a simple 7408 IC is beyond me...I must have been nuts.

Can anyone tell me what I can get from Digikey that will fit my needs?
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Old 15th August 2006, 08:35 AM   #2
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If the MC53200 is an ordinary TTL or CMOS chip, and the pin-out matches the 7408, then either a 74HC08 (or a 74HCT08 if it's being driven from TTL) should do the job.

If the MC53200 is ECL then you have no chance!

(I looked for the Mitsubishi chip on Google but nothing was found, so I have no idea what technology the original part is).
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Old 15th August 2006, 09:27 AM   #3
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I'm seeing plain old '+5V-to-0V' transitions, so it looks like standard TTL logic to me...
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Old 15th August 2006, 10:06 AM   #4
rpapps is offline rpapps  Antarctica
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Default Re: Need a Quad 2-input AND gate

Quote:
Originally posted by EchoWars
...ought to be simple, right? I have what is labled a Mitsubishi M53200P 14-pin DIP IC, running on a 5V supply. Seems as if this chip is intermittent, so I went to get a replacement.
Hi Echowars
If you were able to discover that this chip is intermittent, can we assume you have knowledge of its pinouts and circuit configuration. That would help enormously in finding a suitable replacement. My Google search suggested a NAND gate but no datasheet.
What is it in? Do you have access to a service manual?
Any information you can provide may help.
Cheers
Rob
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Old 15th August 2006, 10:49 AM   #5
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Oh poo...

The page with a block diagram shows a quad 2-input AND gate, but the schematic says it's a NAND gate.

Anyway, the pinout matches that of a Philips 74HC00 I found...

I also just found a bad dual quad-input NAND gate. Man...I oughta replace all these old things...
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Old 15th August 2006, 10:59 AM   #6
singa is offline singa  Singapore
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Default Need a Quad 2-input AND gate.

http://www.ceitron.com/semi/ceimitsubishi.html

Check this out.M53200P is the Japanese equivalent of 7400 TTL.
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Old 15th August 2006, 11:12 AM   #7
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So it's actually a NAND gate then.

A 74HCT00 should do the job.
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Old 15th August 2006, 11:14 AM   #8
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Groovy.

Time to go parts huntin'.

Thanks guys. I was lost, but now I'm found.

Edit: Any reason I can't use the 'HC' family of devices? Having trouble finding a dual 4-input NAND gate in the 'HCT' family...
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Old 15th August 2006, 11:35 AM   #9
rpapps is offline rpapps  Antarctica
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Quote:
Originally posted by EchoWars
Groovy.

Having trouble finding a dual 4-input NAND gate in the 'HCT' family...

74HCT20
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Old 15th August 2006, 11:38 AM   #10
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Are you sure it's a dual 4-input gate? An earlier poster said it was an equivalent to a 7400 which is a Quad 2-input NAND gate.
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