MAX456 8x8 Crosspoint Video Switch

The MAX456 is the first monolithic CMOS 8 x 8 Video crosspoint Switch that significantly reduces component count, board space, and cost. The crosspoint Switch contains a digitally controlled matrix of 64 T-switches that connect eight Video input signals to any, or all, output channels. Each matrix output connects to eight in 662 ternal, high-speed (250V/s), unity-gain-stable Buffers capable of driving 400 and 20pF to 1.3V. For applications requiring increased drive capability, the MAX456 outputs CAN be connected directly to two MAX470 quad, gain-of-two Video Buffers which are capable of driving 75 loads.
Three-state output capability and internal, programmable active loads make it feasible to parallel multiple MAX456s and form larger Switch matrices.
In the 40-pin DIP package, crosstalk (70dB at 5MHz) is minimized, and board area and complexity are simplified by using a straight-through pinout. The Analog inputs and outputs are on opposite sides, and each channel is separated by a power-supply line or quiet digital Logic line.
By Maxim Integrated Products