The HA456CMZ from Renesas Electronics America Inc is a video switch Integrated Circuit with 1 channel and an 8x8 crosspoint configuration, in a 44-PLCC (16.58x16.58) package.
The HA456CM from Harris Corporation is a video crosspoint switch Integrated Circuit with 8 channels, in a 44-PLCC package measuring 16.58x16.58; the source also cites 1 channel.
The HA456CP from Intersil is a video switch Integrated Circuit with 1 channel in a 40-PDIP package, and its short description refers to a cross point switch with 8 channels.