[H-GEN] Sparc Stations

[Martin Pool]

> From: Monica Anthon <anthonm at ats.com.au>
> Subject: RE: [H-GEN] Sparc Stations
> Date: Wed, 8 Apr 1998 01:35:14 +1000
> Organization: TAMS Systems
> X-Mailer: Microsoft Internet E-mail/MAPI - 8.0.0.4008

> Re driving the monitors from a PC, looks to me like that circuit could 
> easily be done with a single chippie.....using a quad XOR package .
> 
> 	NOT ( VS XOR HS ) = (( VS XOR HS ) XOR TRUE )
> 
> Or am I mistaken?  Use a 74HC series if speed/drive capability is an issue, 
> which I don't think it would be.

That sounds OK.  I happened to notice a recommendation in the 74LS
datasheets which might be relevant: unused inputs should be wired to
VCC.

Typical rise and fall times are 6.0ns for LS series components with a
50pF load, and longer for heavier loads.  I think the maximum current
output is about 10mA (for gates, rather than drivers).  I don't know
what the video standard requires.

> Does anyone know of a source for the 13W3 
> connectors, preferably PCB mount ?

I'll try to remember to look in the components catalogues in ECE.

--
Martin Pool
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