[HomeBrew] Looking for a few MC-145151 PLLs

[n_griggs at bellsouth.net]

> 
> From: Ian Wilson <ianmwilson at earthlink.net>
> Date: 2007/05/04 Fri AM 11:07:34 EST
> To: Homebrew List <homebrew at mailman.qth.net>
> Subject: [HomeBrew] Looking for a few MC-145151 PLLs
> 
> ** Please do NOT cross-post messages when posting to HOMEBREW **
> 
> I have in mind a retro PLL project, programmed by wire jumpers. The MC-145151 PLL chip is a pretty good fit for this. Unfortunately, it's no longer in production.
> 
> Anyone have a couple to trade/sell? Is there a current equivalent (I assume not, since the parallel interface takes up way too much area).
> 
> 73, ian K3IMW
> 
 Lansdale Semiconductor  <http://www.lansdale.com>  has taken over from Freescale Semiconductor (offshoot of Motorola).  I believe that DigiKey and Jameco still sell the MC145151.  I too have a project that the PLL chip would work WONDERS in!  A 11m to 6m conversion!!  Alas I have a BUNCH of MC145152 PLL chips that are similar but are Dual-Modulus not Single-Modulus PLL chips.  They may work but still going over the data sheets.  I also have some old boards from some satellite SCPC TX/RX equipment that I may convert to a 6 meter beacon.  The TX boards are already in the 50 to 80 MHz area - just change one of the PLL circuits or add a keyed 21.4 MHz oscillator.  They average +10 to 20 dBm out already (10 to 100 mW).