Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

Never mind my last post! I see what they did. They are mixing apples and oranges.. I have to stop reviewing my designs at 3am!

Sorry Guys

mike




________________________________
From: michael tenore <wb2lcw@...>
To: Homebrew_PCBs@yahoogroups.com
Sent: Saturday, May 16, 2009 8:35:40 PM
Subject: [Homebrew_PCBs] 74LS157 pinouts?






I was rechecking the design of of a board that I will be making in the next few days and I just noticed the pinout of the Texas Instrument 74LS157 is different than the pinout
from Fairchild or Signetics?
TI says Inputs  3A=11 3B=10 4A=14 4B=13! Everyone else has it as 3a=14 3b=13 4a=11 4b=10! who is right?

Even the Library in ExpressSCH has it other than what TI shows in thier Data BooksTI?

I dont know which one to trust!

Regards

Mike




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