Video multiplexers claim speed record

With 500MHz performance, the EL4342 and EL4340 are billed as the world's fastest video multiplexers and can easily support UXGA resolutions.

Intersil has released two highly integrated solutions for switching high-resolution RGB or HDTV signals.

With 500MHz performance, the EL4342 and EL4340 are billed as the world's fastest video multiplexers and can easily support UXGA resolutions.

Previously, system designers needed three discrete chips to accomplish the same functionality and performance.

Designed primarily for RGB or YPbPr video switching, the EL4342 is a triple 4:1 multiplexer (mux) that accepts four sources of high quality video and is able to switch loss-free between the multiple channels.

The EL4340 is a triple 2:1 mux, it accepts two sources and can switch between them.

With small footprints, the devices allow support for multiple video inputs on TVs, audio/video receivers, projectors and video switches with minimal space consumption.

The key performance parameters of the EL4342 - namely 500MHz -3dB bandwidth, only 16mA per channel supply current and a slew rate of +/-870V/us - provide it with superior performance to any other mux on the market.

In addition, a 0.1dB flat band of 60MHz ensures that HDTV quality video is not degraded.

The EL4340 and EL4342 are fixed unity gain mux amps featuring high slew rates and excellent bandwidth for video switching.

These devices feature a high impedance output state (HIZ) that enables the outputs of multiple devices to be wired together.

A power-down mode is included to turn off unneeded circuitry in power sensitive applications; when enabled, the EL4340 and EL4342 enter standby power mode where they consume just 18mW of power.

An added feature of the EL4340 is a latch enable function that allows independent logic control using a common logic bus.

The EL4342 represents a significant cost saving over alternate solutions by virtue of the high degree of integration.

It is now feasible to use a single device across a manufacturer's entire product line because of the exceptional bandwidth, small footprint and competitive cost.

This saves customers significant rework of boards to expand or reduce the number of high definition inputs that they are able to support.

With a variety of sources such as set-top boxes, game players, DVD players and video receivers, it is important to be able to support at least four high definition inputs in a consumer display device.

Both devices are available now in standard lead and Pb-free finish.

The EL4340 is packaged in a 24-pin QSOP, and the EL4342 is packaged in a 5 x 5mm 32-lead QFN package.

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