Fast video muxes support UXGA resolutions

Milpitas, Calif. — Intersil Corp.'s highly-integrated triple multiplexing amplifiers for switching high-resolution RGB or HDTV signals are said to easily support UXGA resolutions.

The EL4342, a triple 4:1 multiplexer (mux), was designed primarily for RGB or YPbPr video switching; it can accept four sources of high quality video and switch loss-free between the multiple channels.

The EL4340, a triple 2:1 mux, can accept two sources and 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. Previously, system designers needed three discrete chips to accomplish the same functionality and performance, the company said.

Key performance parameters of the triple 4:1 mux include 500 MHz -3 dB bandwidth, 16 mA per channel supply current and a slew rate of ± 870 V/μs. In addition, a 0.1 dB flat band of 60 MHz ensures that HDTV quality video is not degraded.

These devices feature a high impedance output state (HIZ) that enable the outputs of multiple devices to be wired together. A power-down mode is included to turn off un-needed circuitry in power sensitive applications; when enabled, the muxes enter standby power mode where they consume just 18 mW of power. An added feature of the EL4340 is a latch enable function that allows independent logic control using a common logic bus.

The EL4340 is packaged in a 24-pin QSOP and is priced at $1.99 each (1,000-piece quantities). The EL4342 is packaged in a 5mm x 5mm 32-lead QFN package and is priced at $3.49 each in same quantities. Click here for the EL4340/EL4342 data sheets.

Intersil , 1-888-468-3774,

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