MAX4359/MAX4360/MAX4456 low-cost video cross-point switches are designed to reduce component count, board space, design time, and system cost. Each con- tains a matrix of T-switches that connect any of their four (MAX4359) or eight (MAX4360/MAX4456) video inputs to any of their buffered outputs, in any combination. Each matrix output is buffered by an internal, high-speed (250V/µs), unity-gain amplifier that is capable of driving 400Ω and 20pF at 2.6Vp-p. For applications requiring increased drive capability, buffer the MAX4359/ MAX4360/MAX4456 outputs with the MAX497 quad, gain-of-two video line driver. The MAX4456 has a digitally controlled 8x8 switch matrix and is a low-cost pin-for-pin compatible alternative to the popular MAX456. The MAX4359/MAX4360 are similar to the MAX4456, with the 8x8 switch matrix replaced by a 4x4 (MAX4359) or an 8x4 (MAX4360) switch matrix. Three-state output capability and internal, programmable active loads make it feasible to parallel multiple devices to form larger switch arrays. The inputs and outputs are on opposite sides, and a quiet power supply or digital input line separates each channel, which reduces crosstalk to -70dB at 5MHz. For applications demanding better DC specifications, see the MAX456 8x8 video crosspoint switch.
The MAX4359/MAX4360/MAX4456 are low-cost video crosspoint switches designed to reduce component count and board space. The MAX4456 features an 8x8 switch matrix, while the MAX4359 and MAX4360 offer 4x4 and 8x4 matrices, respectively. Each device contains a matrix of T-switches that connect video inputs to buffered outputs in any combination.
| Supply Current (All Buffers Off) | 1.6 mA (MAX4456) |
|---|---|
| Output-Buffer Slew Rate | 250 V/us |
| -3dB Bandwidth | 65 MHz |
| All-Channel Off-Isolation | 80 dB at 5MHz |
| Single-Channel Crosstalk | 70 dB at 5MHz |
The MAX4359 contains a 4x4 switch matrix.
The MAX4456 has a digitally controlled 8x8 switch matrix.
Yes, three-state output capability and internal programmable active loads make it feasible to parallel multiple devices.