Analog Devices Inc./Maxim Integrated MAX9250ECM/V+

Overview

MAX9250ECM/V+ from Maxim Integrated is a 27-bit DC-balanced LVDS deserializer IC for automotive and industrial video interfaces, converting serial LVDS input (5–42MHz) into 18-bit RGB video data and 9-bit control data with programmable latch edge, output enable, and ±2% reference clock tolerance. It operates from +3.3V core supply and supports 1.8V–3.3V logic-level outputs, used in in-vehicle display systems with AC-coupled cable links.

For engineers reviewing the MAX9250ECM/V+ datasheet, MAX9250ECM/V+ pinout, MAX9250ECM/V+ application, or MAX9250ECM/V+ equivalent, this page delivers verified functional specifications, validated pin roles, confirmed ESD ratings (±10kV contact), real-world timing constraints (tOE = 10–30ns), and precise alternative part comparisons - all extracted from Maxim's official MAX9248/MAX9250 Rev 5 datasheet.

Technical Context

The MAX9250ECM/V+ implements a PLL-based clock recovery architecture synchronized to the serializer's PCLK_IN without external control, with lock time of 16,928 × t_T cycles. Its deserialization separates video and control phases using DE_OUT signaling, enabling DC-balanced AC-coupling and reducing EMI via staggered RGB_OUT switching and frequency-scaled transition times.

Unlike the MAX9248, the MAX9250ECM/V+ omits spread-spectrum modulation but adds OUTEN input for output busing - allowing two devices to share a common bus with 30ns inter-device enable/disable sequencing. It decodes serial words using overhead bits (EN0 for control, EN0/EN1 for video) and applies majority voting on C0–C4 for single-bit-error tolerance.

Key Specifications

Pinout & Package

MAX9250ECM/V+ is housed in a 48-lead LQFP package (7mm × 7mm, 0.5mm pitch) with exposed thermal pad. Pin functions are electrically and physically distinct from MAX9248 - notably including OUTEN (pin 14) instead of SS, and omitting SS-related internal circuitry.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX9250GCM+, the MAX9250ECM/V+ offers extended high-temperature operation essential for engine-bay proximity or sun-loaded dashboards; compared with MAX9275AEE+, it provides proven reliability at lower cost and complexity for standard HD video links without HDCP.

Availability

MAX9250ECM/V+ is available at Aetrix Electronics and suitable for navigation system displays, in-vehicle entertainment systems, and automotive video cameras requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX9250ECM/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, designs high-performance analog and mixed-signal ICs for automotive, industrial, and communications markets.

The MAX92xx deserializer family targets high-reliability digital video transmission in harsh environments, emphasizing ESD robustness, DC balance, and seamless interoperability with MAX9247/MAX9217 serializers.

FAQ

What is the primary function of the MAX9250ECM/V+ in a video interface system?

The MAX9250ECM/V+ is a 27-bit LVDS deserializer that converts high-speed serial video and control data from a MAX9247 or MAX9217 serializer into parallel 18-bit RGB video (RGB_OUT[17:0]) and 9-bit control signals (CNTL_OUT[8:0]), synchronized by DE_OUT and PCLK_OUT. It enables compact, EMI-resistant video links in automotive displays and cameras.

Does the MAX9250ECM/V+ support spread-spectrum clocking like the MAX9248?

No. The MAX9250ECM/V+ does not implement spread-spectrum modulation - that feature is exclusive to the MAX9248. Instead, the MAX9250ECM/V+ provides OUTEN (output enable) for busing and maintains strict ±2% reference clock tolerance, making it optimized for deterministic timing in display pipelines where clock jitter must be minimized.

What is the purpose of the OUTEN pin on the MAX9250ECM/V+?

The OUTEN pin (pin 14) on the MAX9250ECM/V+ controls output driver enable/disable state: when high, RGB_OUT[17:0], CNTL_OUT[8:0], DE_OUT, and PCLK_OUT drive actively; when low, those outputs enter high-impedance mode (except LOCK). This enables hardware-multiplexed busing of two MAX9250ECM/V+ devices on shared traces with 30ns sequencing margin.

Can the MAX9250ECM/V+ operate with a 1.8V output supply voltage?

Yes. The MAX9250ECM/V+ supports VCCO = 1.8V to 3.3V, allowing direct interfacing with 1.8V logic families such as modern FPGAs and display TCONs. At VCCO = 1.8V, VOH ≥ 1.7V and VOL ≤ 0.1V are guaranteed across temperature, eliminating need for external level shifters in low-voltage display subsystems.

How does the MAX9250ECM/V+ handle loss of serial input signal?

When the LVDS input (IN+/IN−) stops switching - e.g., due to open cable or serializer shutdown - the MAX9250ECM/V+ drives all outputs low except LOCK, which goes high. PCLK_OUT follows REFCLK, and the device continues monitoring for transition words. LOCK going low again indicates restored valid data lock, providing clear fault detection for system diagnostics.