The 74F161 is only rated at 90MHz over temp (TI) and 120MHz or 100MHz (unclear)
at 25C and then only as typical without any max freq being indicated at all
in the datasheet (Fairchild).
So thats pretty much a no-go for any commercial product even at 'only' 100MHz..
Again for a one-off it may
Sorry if I hijack the thread...
On Sat, Nov 8, 2014 at 5:20 AM, Said Jackson via time-nuts
time-nuts@febo.com wrote:
Joe,
This puppy can go to 166MHz over temp and has standard 100 mil pin spacing if
you put it into a socket: ATF16V8C
I have not used PALs since 1992 but I used to be
The 74F161 is only rated at 90MHz over temp (TI) and 120MHz or 100MHz
(unclear) at 25C and then only as typical without any max freq being
indicated at all in the datasheet (Fairchild).
That's just the count frequency. If you want to divide by 5, you have to do
something like use the
Am 08.11.2014 um 09:46 schrieb Said Jackson via time-nuts:
The x163 seems to be in better supply than the '161.
For example: http://www.nxp.com/documents/data_sheet/74LVC163.pdf
At 3.0 - 3.6V 150 MHz guaranteed, 200 MHz typ.
I have done a fanout board for the Xilinx Coolrunner
Joe wrote:
Looks like I can get the 74AC161 in DIP from Mouser. Thanks to everyone for
the suggestions. I still like DIP for prototyping on breadboards.
If by breadboards you mean plug-in breadboards, AC logic often does
not play well with them. It wants a real ground plane and very short
On Fri, 7 Nov 2014 19:54:40 -0500
Bob Camp kb...@n1k.org wrote:
Hi
If we are talking about 12 hours on / 12 hours off each day - leave it on,
That one is a slam
dunk. The cycling will kill stuff faster than any aging on the bulb (or
whatever).
If you are are talking about running it
Please share results.
I have a toaster oven and a nice PLC with thermocouple, just haven't set
it up yet
Jim
On 11/7/2014 10:51 PM, Neil Schroeder wrote:
Sparkfun in the United States also sells off large bags of their discards
for this very purpose - generally sorted by the type of work
Even though Bob says it I also screwed up the 15 pin mini.
To be very clear
Viewed from the chassis front.
Male plugs pin 1 left side
Female plugs pin 1 right side
But that said the systems running fine now by simply doing the pin 2 and 3
approach.
Next things. Battery backup to the GPS unit
I will check when I get things going but the error message you see may be a
parity error. I know some GPS things wanted even parity.
I'll take a run at it tonight I hope.
Regards
Paul
WB8TSL
On Sat, Nov 8, 2014 at 10:56 AM, paul swed paulsw...@gmail.com wrote:
Even though Bob says it I also
I would very, very, very much enjoy perusing that library, if you'd be as
kind ;-)
Particularly just a few basics for the Xilinx. I also have a few CVHD-950s
In need of some parenting!
On Saturday, November 8, 2014, Gerhard Hoffmann dk...@arcor.de wrote:
Am 08.11.2014 um 09:46 schrieb Said
Hi
You make another good point, that is worth repeating.
With RS-422, it’s not just the usual RX to TX and TX to RX confusion. You can
have all that right and still get it wrong. The + and - of each must be
properly identified and connected.
That sounds easy, but there is a catch. If you
Hi
Actually the error message is a “feature” of SCPI. It’s one that I never
remember when I’m using a terminal.
You need to send a command (or power cycle) to clear the error que. It’s like
GPIB in that regard. The errors stack up as you send commands and you must toss
out each one out. Once
why don't you just look at the D_Sub connectors. Pins and sockets are
consistently numbered. I do see these numbers even on the J5 interface
connector of my RFTG-1. If needed take a magnifying glass.
Götz
Am 08.11.2014 16:56, :
Even though Bob says it I also screwed up the 15 pin mini.
To be
Hi Bob,
I've been using the cheat method that Stewart posted. It's mostly working,
but I do see occasional errors. So, I ordered the following USB to RS-422
adapter. Now your post makes me worry that there's still going to be a
problem. I'll post results back to the list. It is a FTDI
Hal,
That means in a divide by 5 you cant even get close to 125MHz even if the
74lvc163 is rated at 200MHz count frequency. Very good point.
I used to use ABEL with DataIO programmers back in the day, Abel is now
licensed by Lattice and I think they still support the old 16V8 and 22V10
Francesco,
If you can handle tqfp packages then the Lattice parts are a worthy PAL
replacement. The LC4032V clocks at up to 400MHz with 2.5ns delay, and that part
at slower speed costs down to only $1.43 at mouser. Its a simple architecture
with deterministic timing, kind of like a Super-PAL
Potato Semi's world heardquaters
http://goo.gl/P7vqMT
-pete
On Sat, Nov 8, 2014 at 9:36 AM, paul swed paulsw...@gmail.com wrote:
Heavens never heard of potato semi. Pretty interesting.
Though if you use the soic to dip boards won't that mess up the top end
signalling?
It gets tricky at
Am 08.11.2014 um 18:36 schrieb paul swed:
Heavens never heard of potato semi. Pretty interesting.
If it cannot drive at least 100 Ohm without running out of speed then
it's not for me.
:-) Gerhard
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To
Hah, don't we all. I look at the physical connector whenever I'm doing a
layout. I used to be able to see the tiny, virtually invisible numbers
that most of them have molded into the plastic. I can't see them anymore. :)
I've conveniently managed to forget all the layouts I screwed up with
w...@quackers.net said:
Hah, don't we all. I look at the physical connector whenever I'm doing a
layout. I used to be able to see the tiny, virtually invisible numbers that
most of them have molded into the plastic. I can't see them anymore. :) I've
conveniently managed to forget all the
Hi
There are a wide range of chips you can use for “proper” RS-422. There are also
a range of USB RS-422 adapters for $25. I would investigate the adapters,
starting with cheap ones that claim FTDI chips inside. I’d also look for a
claim of Windows 8 drivers. That’s not so much because I
Am 08.11.2014 um 18:21 schrieb Robert Darby:
As a dumb question does $15 for this item :
XC9572XL CPLD development board v1b
http://www.seeedstudio.com/depot/XC9572XL-CPLD-development-board-v1b-p-799.html
make any sense? It's 5V tolerant and has 5ns pin to pin logic. JTAG
or bus
You can program it in my beloved ABEL instead if the dreaded CUPL..
Lattice sells a cheap USB programmer for these.
Are they usable in a non-Windows environment?
--
These are my opinions. I hate spam.
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List,
I've assembled three PDF documents for the HP 3586B. An electrolytic capacitor
replacement list, a
15 KHz IF pick-off doc and the Beethoven audio test. You get three for the price
of one: FREE.
If interested, please send me a new email off line.
Regards,
Perrier
When I first discoverd the parts, that was the brick wall. They pretty much
can't drive anything. I was going to look at some line drivers I had for a
fast 4 Gbs setup but discovered I could not find them. -pete
On Sat, Nov 8, 2014 at 9:50 AM, Gerhard Hoffmann dk...@arcor.de wrote:
Am
On Sat, 08 Nov 2014 09:58:36 +0100, Francesco Messineo wrote:
can anyone suggest a (cheap if possible) programmer and software for
these modern PLD?
Thanks and best regards Frank IZ8DWF
I'd suggest ALTERA parts , but only because they are the cheapest boards
on *bay , XILINX boards are
Hi
I’ve done a lot of designs with Altera parts. They are fine parts, but they are
not magic. On the CPLD parts, be careful of the speed grade and be sure you do
a timing analysis on your design before you buy any hardware. All the design
tools are schematic entry capable and free on the web.
It seems that Mr. Richard of Potato Semiconductor has issued a patent:
http://www.google.com/patents/US7102380
On Sat, Nov 8, 2014 at 6:48 PM, Pete Lancashire p...@petelancashire.com wrote:
Potato Semi's world heardquaters
http://goo.gl/P7vqMT
-pete
On Sat, Nov 8, 2014 at 9:36 AM, paul
On Sat, 08 Nov 2014 18:17:09 -0500, Bob Camp wrote:
Hi
I’ve done a lot of designs with Altera parts. They are fine parts, but
they are not magic.
SNIP
The Cyclone 2’s had a minimum rated PLL
input of 20(?) MHz. The later parts bumped that down to 10 MHz. Much
more TimeNuts compatible.
Hi
On Nov 8, 2014, at 7:14 PM, cfo xne...@luna.dyndns.dk wrote:
On Sat, 08 Nov 2014 18:17:09 -0500, Bob Camp wrote:
Hi
I’ve done a lot of designs with Altera parts. They are fine parts, but
they are not magic.
SNIP
The Cyclone 2’s had a minimum rated PLL
input of 20(?) MHz.
We do most our projects with Altera G/A.
The biggest benefit is that if something does not work on first pass
changing the G/A logic is much faster, less costly than a new board layout.
Bert Kehren
In a message dated 11/8/2014 6:17:29 P.M. Eastern Standard Time,
kb...@n1k.org writes:
Hi
Hi
One of the more interesting uses for something like a Cyclone V would be a
front end board to drive a KS-24361 from an ensemble of sources. That’s what
David Allan’s original idea was when he started the whole software empire that
turned into the Z3801 and all the rest.
Bob
On Nov 8,
Is this who you got it from
http://www.css-timemachines.com/
if so, why not contact them ?
-pete
On Sat, Nov 8, 2014 at 6:52 PM, Rick Thomas rbtho...@pobox.com wrote:
I just bought a Time Machines TM1000A GPS Time Server from CSS in Lincoln
Nebraska, USA.
Immediately after I plugged it in
On 11/8/14, 6:58 PM, Pete Lancashire wrote:
Is this who you got it from
http://www.css-timemachines.com/
if so, why not contact them ?
http://www.css-design.com/downloads/TM1000A_Manual.pdf
page 9 of the pdf.
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