The Intersil HSP48212 is a 68 pin Digital Video Mixer IC intended for use in multimedia and medical imaging applications.
The HSP48212 allows the user to mix two video sources based on a programmable weighting factor. After weighting the input data signals, the Video Mixer simply adds the two weighted signals mathematically. This results in the mixed output, which is a weighted sum of the two sources.

FEATUREs
• 12-Bit Pixel Data
• Two’s Complement or Unsigned Data
• 12-Bit Mix Factor
• 13-Bit Signed or Unsigned Three State Output
• Overflow Detection and Output Saturation
• Rounding to 8, 10, 12, or 13-Bits
• Input and Output Pixel Data Synchronous to Clock
• Programmable Pipeline Delay of up to 7 Clock Cycles for Control of Misaligned Input Data
• TTL Compatible Inputs/Outputs
• DC to 40MHz Clock Rate

APPLICATIONs
• Video Summing (Frame Addition)
• Video Mixing
• Fade In/Out
• Video Switching
• High Speed Multiplying