Newark Farnell would be a place to check. I know you're in the UK, but a
place in the SF Bay Area called Brill Electronics often carries that sort
of stuff.

Hope that helps...
cheers,
skipp

www.radiowrench.com

: Philip de Cadenet wrote:
: I wonder if anyone on the brain trust knows of a possible source of this
: chip?

: Digikey, Mouser and Jameco in the US have been tried. Dallas/Maxim have
: them on a 6 week lead time.

: I need a few pieces rather urgently.

: Any suggested suppliers?
: --
: Philip de Cadenet G4ZOW
: Transmitters 'R' Us
: http://www.transmittersrus.com