[sdiy] LF444 vs. NTE859?

[Sam Ecoff]

Can anyone give a reason that I can't substitute an NTE859 -- data  
sheet here: http://www.nteinc.com/specs/800to899/pdf/nte859.pdf

for an LF444 --  data sheet here:

http://www.alldatasheet.com/datasheet-pdf/pdf/8580/NSC/LF444.html?

  in one of Ray Wilson's sample and hold modules:

http://www.musicfromouterspace.com/analogsynth/SMPLANDHOLD200607/ 
SMPLANDHOLD200607.php

Thanks in advance,

Sam E.