MAX9248GCM/V+

Serializers, Deserializers Overview

The MAX9248GCM/V+ is a 27-bit DC-balanced LVDS deserializer operating at parallel clock frequencies from 5MHz to 42MHz. It converts serial LVDS input into 18 bits of parallel video data and 9 bits of control data using separate phases to reduce the serial-data rate. The device features programmable spread-spectrum output for EMI reduction, selectable rising or falling latch edges, and ISO 10605 ±10kV contact discharge ESD protection. It operates on a +3.3V core supply with a separate VCCO supply supporting 1.8V to 3.3V logic levels. Available in a 48-lead LQFP package, it supports industrial temperature ranges of -40°C to +85°C and -40°C to +105°C.

Serializers, Deserializers Feature Summary

• Proprietary data decoding provides DC balance and reduces electromagnetic interference (EMI).
• Programmable spread-spectrum capability allows output data and clock frequency spreading by ±4% or ±2%.
• Control data is deserialized during video blanking periods to optimize bandwidth usage.
• Five control data inputs are designed with single-bit-error tolerance via majority voting.

Serializers, Deserializers Applications

• Navigation system displays
• In-vehicle entertainment systems
• Video cameras
• LCD displays

Serializers, Deserializers Procurement Notes

Verify the specific suffix 'GCM/V+' against the manufacturer's current datasheet revision to confirm the extended temperature range (-40°C to +105°C) and lead-free status. Ensure the ordering code matches the exact package type and environmental compliance requirements specified in the latest official documentation before finalizing procurement.

Serializers, Deserializers Selection Notes

Select this component when interfacing with a MAX9247 serializer for digital video transmission systems requiring up to 42MHz operation. Verify that the application requires spread-spectrum functionality for EMI mitigation. Confirm that the target logic interface voltage falls within the 1.8V to 3.3V range supported by the separate VCCO supply pin.

Serializers, Deserializers Part Context

The MAX9248 is part of the MAX9248/MAX9250 family of 27-bit DC-balanced LVDS deserializers. It is specifically designed to pair with the MAX9247 serializer to form complete digital video transmission systems. For lower operating frequencies below 35MHz, it can also be paired with the MAX9217 serializer.

Serializers, Deserializers Replacement Considerations

The MAX9250GCM/V+ is a functional substitute within the same family but lacks the spread-spectrum feature found in the MAX9248. Other variants such as the MAX9248ECM+/MAX9248ETM+ exist but may differ in package type or temperature rating; verify electrical specifications and pin compatibility before substitution.

Serializers, Deserializers FAQ

How does the MAX9248 handle control data transmission?

Control data is deserialized during the video blanking time. The DE_OUT signal indicates when control data is active on the CNTL_OUT pins versus video data on the RGB_OUT pins.

What is the purpose of the SS input pin on the MAX9248?

The SS (Spread-Spectrum) input controls the frequency spread of the PCLK_OUT and output data relative to the REFCLK. Driving SS high enables ±4% spread, while pulling it low enables ±2% spread.

How is ESD protection specified for the LVDS inputs?

The device specifies ESD tolerance according to ISO 10605, offering ±10kV contact discharge and ±30kV air-gap discharge protection on the IN+ and IN- pins.