I think you may be having difficulty because the part# is incomplete.
The temperature range (0 to 70 or -40 to + 85 degree C), speed (55 ns or 70 ns) and the package style (32-DIP, 32-SOP or 32-TSOP) will all factor into the complete part #. This datasheet may be helpful in building a complete part number and helping you to find exactly what you're looking for: http://www.farnell.com/datasheets/44215.pdf
