MAX4456CPL+

Analog Switches - Special Purpose Overview

The MAX4456CPL+ is an 8x8 video crosspoint switch manufactured by Analog Devices Inc. under the Maxim Integrated brand, housed in a 40-pin Plastic DIP package. It operates within a commercial temperature range of 0°C to +70°C and requires dual power supplies of ±5V (±4.5V to ±5.5V). The device features eight internal buffers with a 250V/µs slew rate and supports both serial and parallel digital interfaces for routing any input channel to any output channel.

Analog Switches - Special Purpose Feature Summary

• Contains an 8x8 matrix of T-switches connecting eight video inputs to buffered outputs
• Includes three-state output capability and programmable active loads for parallel expansion
• Supports flexible control via either serial or parallel digital interface modes
• Features straight-through pinouts designed to simplify circuit board layout

Analog Switches - Special Purpose Applications

• High-speed signal routing systems
• Video-on-demand infrastructure
• Video test equipment
• Video conferencing units
• Security surveillance systems

Analog Switches - Special Purpose Procurement Notes

Verify the specific suffix CPL against official documentation to confirm the 40-pin Plastic DIP package and 0°C to +70°C operating temperature range. Ensure that the required dual supply voltage configuration matches your system design before procurement.

Analog Switches - Special Purpose Selection Notes

Select this component when an 8x8 switching matrix is required. Consider the MAX4359 or MAX4360 if a smaller 4x4 or 8x4 matrix suffices. Verify that the commercial temperature range meets your environmental requirements compared to the extended temperature variants.

Analog Switches - Special Purpose Part Context

This part belongs to the MAX4359/MAX4360/MAX4456 family of low-cost video crosspoint switches. The MAX4456 specifically provides an 8x8 matrix, whereas the MAX4359 offers a 4x4 matrix and the MAX4360 provides an 8x4 matrix. All share similar buffer architectures and control logic.

Analog Switches - Special Purpose Replacement Considerations

The MAX4456 serves as a low-cost, pin-for-pin compatible alternative to the MAX456. When replacing legacy components, verify that the electrical specifications of the target application align with the MAX4456's performance characteristics.

Analog Switches - Special Purpose FAQ

How does the MAX4456 handle multiple devices in parallel?

Three-state output capability and internal programmable active loads allow multiple MAX4456 devices to be paralleled to form larger switch arrays without loading lines driven by other devices.

What is the function of the LOAD control line?

When the LOAD line is high, all 400Ω internal active loads are turned on. When low, external 400Ω loads must be used to maintain stability, which is useful when shutting off internal loads in parallel applications.

How is data latched in the serial interface mode?

In serial mode, data is shifted into the first-rank registers. It is then transferred to the second-rank registers by the LATCH line, which updates the switches simultaneously.