The MAX4356 is a 16✕16 highly integrated video crosspoint switch matrix with input and output buffers and On-Screen Display (OSD) Insertion. This device operates from dual ±3V to ±5V supplies or from a single +5V supply. Digital logic is supplied from an independent single +2.7V to +5.5V supply. Individual outputs can be switched between an input video signal source and OSD information through an internal, dedicated fast 2:1 mux (40ns switching times) located before the output buffer. All inputs and outputs are buffered, with all outputs able to drive standard 75Ω reverse-terminated video loads. The switch matrix configuration and output buffer gain are programmed via an SPI/QSPI™-compatible, three-wire serial interface and initialized with a single update signal. The unique serial interface operates in two modes facilitating both fast updates and initialization. On power-up, all outputs are initialized in the disabled state to avoid output conflicts in large-array configurations. Superior flexibility, high integration, and space-saving packaging make this nonblocking switch matrix ideal for routing video signals in security and video-on-demand systems. The MAX4356 is available in a 128-pin TQFP package and specified over an extended -40°C to 85°C temperature range.
The MAX4356 is a highly integrated 16 × 16 video crosspoint switch matrix that includes input and output buffers and an on‑screen‑display (OSD) insertion mux. It can be powered from dual +3 V to +5 V supplies or a single +5 V supply, and each output can be switched between a video source and OSD data via a fast 2:1 mux with 40 ns switching time.
Typical applications include security systems, video routing, and video‑on‑demand installations. The device is offered in a 128‑pin TQFP package and operates over an extended temperature range of –40 °C to +85 °C.
| Matrix size | 16 × 16 |
|---|---|
| Package | 128‑pin TQFP |
| Operating supply voltage | Dual +3 V to +5 V or single +5 V |
| Output buffer gain | ±1 V/V or ±2 V/V |
| Switching time (OSD mux) | 40 ns |
| Crosstalk | -62 dB at 6 MHz |
| Isolation | -110 dB at 6 MHz |
| Power consumption | Low 195 mW (0.76 mW per point) |
| Operating temperature range | -40 °C to +85 °C |
It can be powered from dual +3 V to +5 V supplies or from a single +5 V supply.
The OSD insertion mux switches in 40 ns.
The MAX4356 operates from –40 °C to +85 °C.
Typical power consumption is low, about 195 mW total (0.76 mW per switch point).