Analog Devices Inc./Maxim Integrated MAX9218ECM/V+

Overview

The MAX9218ECM/V+ from Maxim Integrated is a 27-bit, DC-balanced LVDS deserializer IC designed for automotive video links. It converts 7MHz–35MHz LVDS serial streams into 18-bit RGB video data (RGB_OUT[17:0]) and 9-bit control data (CNTL_OUT[8:0]), using separate data/control phases synchronized to DE_OUT. It operates from a +3.3V core supply, supports 1.8V–3.3V output logic via VCCO, and delivers ISO 10605 ±10kV contact ESD protection.

For engineers reviewing the MAX9218ECM/V+ datasheet, MAX9218ECM/V+ pinout, MAX9218ECM/V+ application, or MAX9218ECM/V+ equivalent, this page provides verified functional context, validated pin roles, confirmed timing behavior (including R/F-selectable latch edge and PCLK_OUT stretch on lock), real-world EMI-reduction mechanisms (staggered outputs, transition-time scaling), and automotive-grade thermal (-40°C to +85°C) and reliability specs.

Technical Context

The MAX9218ECM/V+ implements a PLL-based clock recovery architecture that locks first to REFCLK (±2% tolerance), then to the embedded clock in the LVDS stream, with lock indication via LOCK output. Its proprietary DC-balanced decoding enables AC coupling across the serial link, isolating transmitter and receiver grounds while maintaining signal integrity over CAT5e cable up to 12m at 35MHz (700Mbps).

It features dual-phase deserialization: video data appears on RGB_OUT[17:0] when DE_OUT is high (active video period), and control data appears on CNTL_OUT[8:0] when DE_OUT is low (blanking interval). Five control bits (C0–C4) are majority-voted for single-bit-error tolerance; C5–C8 are direct-pass.

Key Specifications

Pinout & Package

The MAX9218ECM/V+ is packaged in a 48-lead LQFP (Lead Pitch: 0.5mm, Body: 7mm × 7mm), RoHS-compliant and automotive-qualified (indicated by /V suffix). Exposed pad not present in LQFP variant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LVDS deserializer applications.

Compared with MAX9218ETM+, the MAX9218ECM/V+ offers identical functionality in an LQFP package optimized for manual inspection and rework, while DS90UB925QSQ/NOPB introduces software dependency and removes hardware-level control-data error tolerance-making MAX9218ECM/V+ preferable for safety-critical, lockstep-display systems.

Availability

The MAX9218ECM/V+ is available at Aetrix Electronics and suitable for automotive navigation displays, in-vehicle entertainment systems, and ADAS camera interfaces requiring stable component supply, AEC-Q100-aligned qualification, and long-term production continuity.

Supply support for MAX9218ECM/V+ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in high-performance analog, mixed-signal, and RF solutions for automotive, industrial, and communications markets.

The MAX9218ECM/V+ belongs to Maxim's automotive-qualified LVDS serializer/deserializer family, engineered specifically for noise-immune, long-cable video transport in harsh vehicle environments with strict EMI and reliability requirements.

FAQ

What is the primary function of the MAX9218ECM/V+ in an automotive video system?

The MAX9218ECM/V+ functions as a DC-balanced LVDS deserializer that converts high-speed serial video and control data into parallel RGB and control outputs. It synchronizes to the incoming LVDS stream using PLL-based clock recovery, outputs DE_OUT to distinguish video and control phases, and provides ISO 10605 ESD protection-making it essential for robust video links between ECUs and displays in vehicles.

Does the MAX9218ECM/V+ require an external oscillator or can it recover clock from the LVDS stream?

The MAX9218ECM/V+ recovers clock directly from the LVDS serial stream using its internal PLL, but it first locks to an external REFCLK input (±2% tolerance) for initialization. Once locked to REFCLK, it transitions to lock onto the embedded clock in the serial data. REFCLK is mandatory for startup but not needed continuously after lock acquisition.

How does the MAX9218ECM/V+ handle control data reliability, and which bits are error-tolerant?

The MAX9218ECM/V+ applies majority voting across three samples to control bits C0–C4, making them single-bit-error tolerant. Bits C5–C8 are passed directly without voting. This design ensures robust command transmission (e.g., brightness, contrast, menu navigation) during video blanking intervals, even in electrically noisy automotive harnesses.

Can the MAX9218ECM/V+ interface directly with 1.8V logic, and how is that configured?

Yes-the MAX9218ECM/V+ supports direct 1.8V logic interfacing via its dedicated VCCO supply pin, which accepts 1.8V to 3.3V. All single-ended outputs (RGB_OUT[17:0], CNTL_OUT[8:0], DE_OUT, PCLK_OUT, LOCK) are referenced to VCCO, eliminating need for external level shifters when driving 1.8V FPGAs or display controllers.

What package type and qualification does the MAX9218ECM/V+ carry, and what does the "/V+" suffix indicate?

The MAX9218ECM/V+ uses a 48-lead LQFP package and is automotive-qualified, as confirmed by the "/V" suffix in its part number. The "+" denotes RoHS compliance. It is specified for -40°C to +85°C operation and meets ISO 10605 ESD requirements-key criteria for deployment in automotive display and camera modules.