VSC830

The VSC830 is a monolithic dual 2x2 asynchronous crosspoint switch, designed for critical signal path control and buffering applications, such as loop-back, protection switching, and multi-channel backplane driver/receivers. Signal path delay is tightly matched between each output channel to eliminate the need for delay path compensation when switching between signal sources.

The crosspoint function is based on a multiplexer tree architecture. Each 2x2 switch can be considered as a pair of 2:1 multiplexers that share the same inputs. The signal path through each switch is fully differential and delay matched. The signal path is unregistered, so there are no restrictions on the phase, frequency, or signal pattern at each input. Unused outputs can be independently powered off, thereby eliminating power on unused sections (see Design Guide section in this data sheet). The switch control inputs can be configured to be compatible with PECL or TTL levels. The high-speed input and output levels are nominally PECL compatible and capable of interfacing with a wide range of termination schemes.