MAX9218ECM+

Serializers, Deserializers Overview

The MAX9218ECM+ is a digital video serializer-to-parallel converter designed for DC-balanced LVDS deserialization. It processes a total of 27 bits, converting an LVDS serial input into 18 bits of parallel video data and 9 bits of parallel control data during separate phases. The device operates with a parallel clock frequency ranging from 7MHz to 35MHz, corresponding to serial data rates up to 700Mbps. It features a selectable rising or falling output latch edge, ISO 10605 ESD protection, and a +3.3V core supply with a separate VCCO output supply supporting 1.8V to 3.3V logic levels. The component is housed in a 48-lead LQFP package and functions within a temperature range of -40°C to +85°C.

Serializers, Deserializers Feature Summary

• Proprietary data decoding ensures DC balance and reduces electromagnetic interference (EMI).
• Control data is deserialized during the video blanking period to optimize bandwidth usage.
• Five control data inputs provide single-bit-error tolerance through majority voting.
• Output transition times are scaled to operating frequency to further minimize EMI.

Serializers, Deserializers Applications

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

Serializers, Deserializers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and RoHS compliance status. Confirm that the intended application environment falls within the specified -40°C to +85°C operating temperature range. Ensure power supply decoupling capacitors are placed as close to the device pins as possible to maintain signal integrity and meet electrical specifications.

Serializers, Deserializers Selection Notes

Select this component when interfacing with a MAX9217 serializer to form a complete digital video transmission system. Ensure the reference clock frequency matches the serializer's parallel clock input within the ±2% tolerance requirement. Verify that the required logic voltage levels for the destination circuitry are compatible with the adjustable VCCO supply range of 1.8V to 3.3V.

Serializers, Deserializers Part Context

The MAX9218ECM+ belongs to the MAX9218 family of DC-balanced LVDS deserializers manufactured by Analog Devices Inc./Maxim Integrated. It is specifically designed to pair with the MAX9217 serializer. The 'ECM' designation indicates the 48-lead LQFP package variant, while the '+' suffix denotes lead-free/RoHS-compliant manufacturing. This part is distinct from automotive qualified variants which may carry additional suffixes.

Serializers, Deserializers Replacement Considerations

Public confirmed substitute part numbers include MAX9218ECM/V+, MAX9218ETM+, and MAX9218ECM-T. Verify pinout compatibility and package dimensions before substitution. Note that the '/V' suffix typically indicates automotive qualification, which may have different reliability requirements than the standard commercial grade.

Serializers, Deserializers FAQ

How does the MAX9218 handle control data transmission?

Control data is deserialized during the video blanking time. The DE_OUT signal goes low to indicate that control data is active on the CNTL_OUT pins, while it goes high to indicate video data is active on the RGB_OUT pins.

What is the function of the RNG0 and RNG1 inputs?

The RNG0 and RNG1 inputs select the operating frequency range of the device and determine the output transition time. Setting them to specific combinations selects between slow transition times for 7MHz-15MHz operation and fast transition times for 15MHz-35MHz operation.

Can the outputs of two MAX9218 devices be bused together?

Yes, the outputs can be bused to form a 2:1 multiplexer using the OUTEN pin. To avoid contention, a delay of at least 30ns must be maintained between disabling one deserializer and enabling the second one.