WTD: 74AS192 or 74S192 counters
 

I'm building a SWRX with PLL frequency generator and need a 1/2 dozen of
these chips. They are unobtanium from my Vancouver suppliers.

I need the speed of AS or S because the master osc. will be 60-90 MHz.

I live in Chilliwack, BC, Canada, V0X 1X0 for shipping calculations.

Thanks all!

--
Gregg
*It's probably useful, even if it can't be SPICE'd*
http://geek.scorpiorising.ca

"Gregg" wrote in message
news:COwwc.24725$jl6.6833@edtnps89...
I'm building a SWRX with PLL frequency generator and need a 1/2 dozen of
these chips. They are unobtanium from my Vancouver suppliers.

I need the speed of AS or S because the master osc. will be 60-90 MHz.

I'd use a CPLD - it'll be faster, cheaper and take up less board space. You
can use it for the rest of the logic as well, including the phase detector.

73, Leon
--
Leon Heller, G1HSM
http://www.geocities.com/leon_heller

"Gregg" wrote in message
news:COwwc.24725$jl6.6833@edtnps89...
I'm building a SWRX with PLL frequency generator and need a 1/2 dozen of
these chips. They are unobtanium from my Vancouver suppliers.

I need the speed of AS or S because the master osc. will be 60-90 MHz.

I'd use a CPLD - it'll be faster, cheaper and take up less board space. You
can use it for the rest of the logic as well, including the phase detector.

73, Leon
--
Leon Heller, G1HSM
http://www.geocities.com/leon_heller

Behold, Leon Heller signalled from keyed 4-1000A filament:

"Gregg" wrote in message
news:COwwc.24725$jl6.6833@edtnps89...
I'm building a SWRX with PLL frequency generator and need a 1/2 dozen
of these chips. They are unobtanium from my Vancouver suppliers.

I need the speed of AS or S because the master osc. will be 60-90 MHz.

I'd use a CPLD - it'll be faster, cheaper and take up less board space.
You can use it for the rest of the logic as well, including the phase
detector.

73, Leon

Hi Leon,

Thanks. But as a tubehead myself, how on earth do I go about doing this?

--
Gregg
*It's probably useful, even if it can't be SPICE'd*
http://geek.scorpiorising.ca

Behold, Leon Heller signalled from keyed 4-1000A filament:

"Gregg" wrote in message
news:COwwc.24725$jl6.6833@edtnps89...
I'm building a SWRX with PLL frequency generator and need a 1/2 dozen
of these chips. They are unobtanium from my Vancouver suppliers.

I need the speed of AS or S because the master osc. will be 60-90 MHz.

I'd use a CPLD - it'll be faster, cheaper and take up less board space.
You can use it for the rest of the logic as well, including the phase
detector.

73, Leon

Hi Leon,

Thanks. But as a tubehead myself, how on earth do I go about doing this?

--
Gregg
*It's probably useful, even if it can't be SPICE'd*
http://geek.scorpiorising.ca

"Gregg" wrote in message
news:yfGwc.23554$DV4.9103@clgrps13...
Behold, Leon Heller signalled from keyed 4-1000A filament:

"Gregg" wrote in message
news:COwwc.24725$jl6.6833@edtnps89...
I'm building a SWRX with PLL frequency generator and need a 1/2 dozen
of these chips. They are unobtanium from my Vancouver suppliers.

I need the speed of AS or S because the master osc. will be 60-90 MHz.

I'd use a CPLD - it'll be faster, cheaper and take up less board space.
You can use it for the rest of the logic as well, including the phase
detector.

73, Leon

Hi Leon,

Thanks. But as a tubehead myself, how on earth do I go about doing this?

You've got a lot of learning to do. 8-)

Try this web page of mine:

http://www.geocities.com/leon_heller/pld_starter.html

Leon

"Gregg" wrote in message
news:yfGwc.23554$DV4.9103@clgrps13...
Behold, Leon Heller signalled from keyed 4-1000A filament:

"Gregg" wrote in message
news:COwwc.24725$jl6.6833@edtnps89...
I'm building a SWRX with PLL frequency generator and need a 1/2 dozen
of these chips. They are unobtanium from my Vancouver suppliers.

I need the speed of AS or S because the master osc. will be 60-90 MHz.

I'd use a CPLD - it'll be faster, cheaper and take up less board space.
You can use it for the rest of the logic as well, including the phase
detector.

73, Leon

Hi Leon,

Thanks. But as a tubehead myself, how on earth do I go about doing this?

You've got a lot of learning to do. 8-)

Try this web page of mine:

http://www.geocities.com/leon_heller/pld_starter.html

Leon

In article COwwc.24725$jl6.6833@edtnps89, says...

I'm building a SWRX with PLL frequency generator and need a 1/2 dozen of
these chips. They are unobtanium from my Vancouver suppliers.

I need the speed of AS or S because the master osc. will be 60-90 MHz.

The 74HC390, a dual decade counter in one package, has a maximum
clock frequency of 66MHz, and is readily available (or at least a lot
more so than the AS or S package -- less power draw too).


--
Dr. Anton T. Squeegee, Director, Dutch Surrealist Plumbing Institute.
(Known to some as Bruce Lane, ARS KC7GR,
kyrrin (a/t) bluefeathertech[d=o=t]calm -- www.bluefeathertech.com
"If Salvador Dali had owned a computer, would it have been equipped
with surreal ports?"

In article COwwc.24725$jl6.6833@edtnps89, says...

I'm building a SWRX with PLL frequency generator and need a 1/2 dozen of
these chips. They are unobtanium from my Vancouver suppliers.

I need the speed of AS or S because the master osc. will be 60-90 MHz.

The 74HC390, a dual decade counter in one package, has a maximum
clock frequency of 66MHz, and is readily available (or at least a lot
more so than the AS or S package -- less power draw too).


--
Dr. Anton T. Squeegee, Director, Dutch Surrealist Plumbing Institute.
(Known to some as Bruce Lane, ARS KC7GR,
kyrrin (a/t) bluefeathertech[d=o=t]calm -- www.bluefeathertech.com
"If Salvador Dali had owned a computer, would it have been equipped
with surreal ports?"

In article yfGwc.23554$DV4.9103@clgrps13, says...

Behold, Leon Heller signalled from keyed 4-1000A filament:

"Gregg" wrote in message
news:COwwc.24725$jl6.6833@edtnps89...
I'm building a SWRX with PLL frequency generator and need a 1/2 dozen
of these chips. They are unobtanium from my Vancouver suppliers.

I need the speed of AS or S because the master osc. will be 60-90 MHz.

I'd use a CPLD - it'll be faster, cheaper and take up less board space.
You can use it for the rest of the logic as well, including the phase
detector.

73, Leon

Hi Leon,

Thanks. But as a tubehead myself, how on earth do I go about doing this?

CPLDs are one option, though I don't know enough about them as yet
to say for certain how easy or difficult it would be to design one in.

Here are a couple of links that may help.

http://www.xilinx.com/xlnx/xil_prodc...ldle arn_page

http://www.xilinx.com/xlnx/xil_prodc...tle=design_kit

The designer's kit will run you about $50.

Happy hunting.


--
Dr. Anton T. Squeegee, Director, Dutch Surrealist Plumbing Institute.
(Known to some as Bruce Lane, ARS KC7GR,
kyrrin (a/t) bluefeathertech[d=o=t]calm -- www.bluefeathertech.com
"If Salvador Dali had owned a computer, would it have been equipped
with surreal ports?"