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Re: [N8VEM-S100:7316] V3 Dual IDE/CF S100 Bus board send out today.



Dave -

I'm pretty sure the 74LS01 is open collector.

http://www.unicornelectronics.com/ftp/Data%20Sheets/7401.pdf

- Gary

On 6/24/2015 11:12 PM, yoda wrote:
Hi John

Dumb question - why do you even need R118 - a 74LS01 is not an open collector device - I am not sure why you need a pull-up to drive another TTL input gate?

Dave