We at BBV in England are looking for a Twilight switch IC
similar to the obsolete "Allegro" ULN3390T for use in a PIC
based 16C74A project.

This had connections for power and ground and an open collector
output, which went low in darkness and O/C in light, all pretrimmed ready
to use,  Any suggestions ???

Alan Forster BBV
engineering@bbvcctv.demon.co.uk