The LMH family of products is joined by
the LMH6580 and the LMH6581, high speed, non-blocking, analog, crosspoint switches. The
LMH6580/LMH6581 are designed for high speed, DC coupled, analog signals such as high resolution
video (UXGA and higher). The LMH6580/LMH6581 each has eight inputs and four outputs. The
non-blocking architecture allows any output to be connected to any input, including an input that
is already selected. With fully buffered inputs the LMH6580/LMH6581 can be impedance matched to
nearly any source impedance. The buffered outputs of the LMH6580/LMH6581 can drive up to two back
terminated video loads (75Ω load). The outputs and inputs also feature high impedance inactive
states allowing high performance input and output expansion for array sizes such as 8 x 8 or 16 x 4
by combining two devices. The LMH6580/LMH6581 are controlled with a 4 pin serial interface that can
be configured as a 3 wire interface. Both serial mode and addressed modes are available.
The LMH6580/LMH6581 come in 48-pin TQFP packages. They also have diagonally symmetrical
pin assignments to facilitate double sided board layouts and easy pin connections for expansion.
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