Quad video switch for RGB routing
The Maxim Integrated MAX466CWI is a quad-channel RGB video switch and buffer in a 28-SOIC package. It targets video-signal routing applications where four independent channels need clean, high-speed switching with minimal signal degradation. Key parametric anchors include a 90 MHz -3dB bandwidth and a 300V/µs slew rate, both sized for composite and component video paths.
Bandwidth and slew rate — what they mean for video routing
The 90 MHz -3dB bandwidth covers the full luminance and chrominance spectrum for standard-definition and many high-definition video formats without roll-off. The 300V/µs slew rate keeps the output edges clean when switching between voltage levels typical of RGB signals, preserving rise-time integrity and minimising crosstalk between channels. For a four-circuit device drawing 100 mA supply current, these ratings indicate the part is designed for continuous video throughput rather than low-power or portable use.
Supply rails and signal levels
The part operates from a dual supply of ±4.75V to ±5.25V, which aligns with standard ±5V analog video rails. The single-ended output type means each channel drives a ground-referenced signal, simplifying the interface to downstream video ADCs or display drivers. If your system uses a single supply, this part requires a bipolar rail — plan for a ±5V regulator or a split-rail converter.
The 28-SOIC footprint is common for analog switch ICs, and the wide-body variant offers better thermal dissipation than the narrow SOIC for the 100 mA supply current. No exposed pad — standard SOIC reflow profile applies.
Lifecycle and compliance note
For new designs in regions enforcing RoHS exemptions (military, aerospace, some industrial), this may be acceptable; for commercial RoHS-mandated builds, a lead-free equivalent or alternate should be qualified.