The MAX4358 is a 32 ✕ 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 sin- gle +5V supply. Digital logic is supplied from an inde- pendent single +2.7V to +5.5V supply. Individual outputs can be switched between an input video signal source and OSD information through an internal, dedi- cated 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 through 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 initializa- tion. On power-up, all outputs are initialized in the dis- abled 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 MAX4358 is available in a 144-pin TQFP package and specified over an extended -40°C to +85°C tem- perature range. The MAX4358 evaluation kit is available to speed designs.
The MAX4358 is a highly integrated 32 × 16 video crosspoint switch matrix with buffered inputs and outputs, on‑screen‑display (OSD) insertion, and a fast 40 ns 2:1 multiplexing stage. It can be powered from dual +3 V to +5 V supplies or a single +5 V supply, and each output can be individually addressed and programmed via an SPI/QSPI‑compatible three‑wire interface.
The device is offered in a 144‑pin TQFP package and operates over an extended temperature range of –40 °C to +85 °C, making it suitable for security systems, video‑on‑demand and other video‑routing applications. Detailed electrical characteristics, pin configuration and package dimensions are provided in the datasheet.
| Switch matrix size | 32 × 16 |
|---|---|
| Switching time | 40 ns |
| Supply voltage options | Dual +3 V to +5 V or single +5 V |
| Output buffer gain | +1 V/V or +2 V/V |
| Power consumption | 195 mW total (0.38 mW per point) |
| Operating temperature range | –40 °C to +85 °C |
| Package type | 144‑pin TQFP |
| Gain flatness | 0.1 dB to 12 MHz |
| Crosstalk | –62 dB at 6 MHz |
| Isolation | –110 dB at 6 MHz |
The MAX4358 switches in 40 ns.
It can operate from dual +3 V to +5 V supplies or from a single +5 V supply.
The device is offered in a 144‑pin TQFP package.
It is specified for –40 °C to +85 °C operation.