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I'm trying to pin down this component

AHC373 with nano SIM for scale

Googling has got me to these two but I can't work out the difference or if they match.

SN74AHC373DW

SN74AHC373DWR

Really appreciate some help IDing it. Thanks

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2 Answers 2

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According to the Texas Instruments datasheet, the only difference between the two part numbers is how the chips are packaged:

enter image description here

The actual chips themselves are identical. They're both octal transparent D-type latches in a 20-SOIC package.

If you are hand-soldering or doing a small-batch, they are completely interchangeable.

If you are doing a large-scale assembly using automated equipment, you'll choose the -DWR part if your assembler/machine expects the parts on tape-and-reel and -DW if the machine expects to be fed from a tube.

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  • \$\begingroup\$ Thank you, that makes sense! \$\endgroup\$
    – Karanko
    Dec 21, 2019 at 3:23
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Welcome to EE Stack Exchange!

You've pretty much done all the work already, thanks for that.

The part you have there is technically the SN74AHC373 from TI (see my username <3).

The "DW" and "DWR" are just there to designate the IC package and order quantity (DW in this case corresponds to SOIC, and the R means the large reel when ordering). From an electrical perspective the two part numbers you listed are identical.

You can see this info on the Order Now tab of TI's website.

enter image description here

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  • \$\begingroup\$ Thank you, that makes sense! \$\endgroup\$
    – Karanko
    Dec 21, 2019 at 3:24

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