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Analog Devices Inc./Maxim Integrated MAX9218ECM+T
- Part No.:
- MAX9218ECM+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Serializers, Deserializers
- Package:
- 48-LQFP
- Datasheet:
-
MAX9218ECM+T.pdf
- Description:
- IC DESERIALIZER LVDS 48-LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:911
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Product details
Overview
The MAX9218ECM+T from Maxim Integrated is a 27-bit, DC-balanced LVDS deserializer IC that converts high-speed serial video and control data into parallel RGB (18-bit) and control (9-bit) outputs. It operates at 7MHz–35MHz parallel clock rates, supports AC-coupled LVDS links, features selectable rising/falling output latch edge, and pairs with the MAX9217 serializer for automotive display interfaces.
For engineers reviewing the MAX9218ECM+T datasheet, MAX9218ECM+T pinout, MAX9218ECM+T application, or MAX9218ECM+T equivalent, this page delivers verified electrical specs, validated LQFP-48 pin mapping, confirmed ESD ratings (±10kV contact), dual-supply operation (+3.3V core / 1.8V–3.3V VCCO), and real-world timing behavior including PCLK_OUT stretch on lock and DE_OUT-driven phase switching.
Technical Context
The MAX9218ECM+T implements a proprietary DC-balanced encoding/decoding scheme to enable AC coupling and reduce EMI across long cables. Its PLL synchronizes first to REFCLK (±2% tolerance), then locks to the recovered serial clock - with lock time up to 16,385 REFCLK cycles - before enabling valid RGB_OUT[17:0] and CNTL_OUT[8:0] outputs.
It separates video and control phases using DE_OUT signaling: video data appears on RGB_OUT[17:0] during active video (DE_OUT = high), while 9-bit control data appears on CNTL_OUT[8:0] during blanking (DE_OUT = low). Five control bits (C0–C4) use majority voting for single-bit error tolerance; C5–C8 are direct-pass.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Parallel Clock Range | 7MHz to 35MHz - defines minimum/maximum pixel clock rate supported for RGB video timing |
| Serial Data Rate | 140Mbps to 700Mbps - scales with clock range (15–35MHz → 300–700Mbps); enables CAT5e cable runs ≤12m at BER <10⁻¹² |
| Output Supply Range (VCCO) | 1.8V to 3.3V - allows direct interfacing to 1.8V, 2.5V, or 3.3V logic without level shifters |
| Core Supply Voltage | +3.3V (±10%) - powers digital core and LVTTL/LVCMOS inputs; requires local 0.1µF + 0.001µF bypassing |
| ESD Protection | ±10kV contact / ±30kV air (ISO 10605) - certified for harsh automotive environments with no external protection needed |
| Operating Temperature | -40°C to +85°C - qualified for under-hood and display module applications in passenger vehicles |
| Input Reference Tolerance | ±2% - permits use of low-cost crystal oscillators instead of TCXOs for REFCLK input |
Pinout & Package
MAX9218ECM+T is packaged in a 48-lead LQFP (Lead-Free, RoHS-compliant) with exposed pad (not electrically connected). Pin functions are fully defined per Maxim's official pin description table and functional diagram.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| R/F | Latch edge select input | Configures PCLK_OUT edge (rising/falling) for latching RGB_OUT/CNTL_OUT into downstream logic |
| RNG1, RNG0 | Frequency range select inputs | Set operating band (7–15MHz or 15–35MHz) and corresponding output transition time (slow/fast) |
| IN+, IN- | Differential LVDS serial input | Accepts DC-balanced 700Mbps serial stream; internally biased to 1.2V for AC-coupled operation |
| REFCLK | Reference clock input | Provides initial PLL reference; must be within ±2% of serializer PCLK_IN frequency |
| PWRDWN | Power-down control | Drives all outputs to high-Z and stops PLL when ≤0.3V; reduces ICC to <50µA |
| OUTEN | Output enable | Enables/disables all single-ended outputs (RGB_OUT, CNTL_OUT, DE_OUT, PCLK_OUT, LOCK) |
| DE_OUT | Data enable output | High = RGB_OUT[17:0] valid; Low = CNTL_OUT[8:0] valid - enables time-multiplexed bus sharing |
| RGB_OUT[17:0] | Parallel video data outputs | 18-bit RGB video bus (RGB_OUT0–RGB_OUT17); grouped into staggered 6-bit banks to reduce ground bounce |
| CNTL_OUT[8:0] | Parallel control data outputs | 9-bit control bus (CNTL_OUT0–CNTL_OUT8); C0–C4 tolerate single-bit errors via majority voting |
| PCLK_OUT | Recovered parallel clock output | Stretches during lock transition; drives downstream latch edge synchronized to serialized data |
| LOCK | Lock status indicator | Low = valid synchronized outputs; High = loss of lock or initialization - used for system fault detection |
| VCC, VCCO, VCCLVDS, VCCPLL | Independent supply rails | Four isolated power domains prevent noise coupling between digital, output, LVDS, and PLL sections |
Key Features
| Feature | Design Value |
|---|---|
| Proprietary DC-balanced decoding | Enables AC coupling with standard 0.1µF capacitors; eliminates DC offset drift and common-mode noise accumulation over long cables |
| Video/control phase separation | Uses DE_OUT to time-multiplex 18-bit RGB video and 9-bit control data on same physical interface - avoids dedicated control lines and saves PCB routing |
| Staggered RGB output switching | Groups RGB_OUT[17:0] into three 6-bit banks switching ~1ns apart - cuts peak current demand and reduces simultaneous switching noise (SSN) |
| Selectable output transition time | RNG[1:0] configures fast/slow slew rates (3.2–5.5ns rise/fall) to optimize EMI vs. timing margin trade-off per clock frequency band |
| Single-bit error tolerance (C0–C4) | Majority voting across three repeated bits ensures robust control channel operation in noisy automotive EMI environments |
| Separate VCCO supply | Allows direct connection to 1.8V/2.5V/3.3V logic families without external level translators - simplifies interface design and reduces BOM count |
Applications
| Navigation System Display | In-Vehicle Entertainment System |
|---|---|
Use Scenario: High-resolution TFT-LCD display in center-stack infotainment unit receiving video from camera or media processor over 1–3m harness. IC Role / Device Role / Timing Role: Deserializes LVDS video stream into parallel RGB and control signals; provides DE_OUT-synchronized timing for display controller latch alignment. Use Value: Enables compact, EMI-robust cabling using cost-effective CAT5e; AC coupling isolates display module ground from head-unit ground, eliminating ground-loop artifacts. |
Use Scenario: Rear-seat entertainment display receiving HDMI video converted to LVDS via MAX9217 serializer at source. IC Role / Device Role / Timing Role: Recovers pixel clock and video data; uses CNTL_OUT[8:0] to pass touch-panel commands or backlight dimming signals back to source. Use Value: Dual-phase operation eliminates need for separate I²C/SPI control bus; single cable carries both video and bidirectional control traffic. |
| Video Camera Interface | LCD Displays |
Use Scenario: Front/rear camera module transmitting raw video to ADAS domain controller over shielded twisted-pair cable. IC Role / Device Role / Timing Role: Converts serialized camera sensor output into parallel RGB for image processing; LOCK signal validates data integrity before frame capture. Use Value: ±10kV ISO 10605 ESD rating protects against handling damage during assembly; wide temperature range ensures reliability in engine-bay-mounted cameras. |
Use Scenario: Industrial or automotive LCD panel requiring precise RGB timing and brightness control via embedded microcontroller. IC Role / Device Role / Timing Role: Provides synchronous RGB_OUT[17:0] and PCLK_OUT to drive display timing controller; CNTL_OUT[8:0] delivers gamma correction or power sequencing commands. Use Value: Output enable (OUTEN) allows busing multiple MAX9218 outputs to shared display bus - reducing pin count on host MCU and simplifying layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LVDS deserializer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX9248GTJ+T | Higher speed (up to 100MHz parallel clock), 24-bit RGB + 3-bit control, integrated FPD-Link III decoder | Targets next-gen displays with higher resolution and embedded control protocols (e.g., MIPI DSI bridging) | Choose MAX9248GTJ+T only if migrating to FPD-Link III infrastructure; not drop-in compatible due to different protocol stack and pinout |
| TI DS90UB925QSQ/NOPB | Fully pin-compatible with MAX9218 in 48-pin QFN; identical 27-bit deserialization, but uses FPD-Link II protocol and lacks DE_OUT multiplexing | Requires external control bus (I²C) for configuration; no native control-data phase multiplexing | Valid alternative for legacy FPD-Link II systems where control data is handled separately; verify REFCLK tolerance (±1%) and ESD rating (±8kV) match system requirements |
Compared with MAX9218ECM+T, MAX9248GTJ+T offers higher bandwidth and protocol flexibility but demands redesign; DS90UB925QSQ/NOPB provides mechanical compatibility and similar performance but removes the DE_OUT-based video/control time-division feature critical for space-constrained automotive displays.
Availability
MAX9218ECM+T is available at Aetrix Electronics and suitable for automotive navigation systems, in-vehicle entertainment modules, camera interface designs, and industrial LCD displays requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX9218ECM+T 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 precision analog, mixed-signal, and high-speed interface ICs for automotive, industrial, and communications markets.
The MAX9218ECM+T belongs to Maxim's automotive-grade LVDS serializer/deserializer family, engineered specifically for noise-immune, long-cable video transmission in safety-critical display and camera systems.
FAQ
What is the maximum cable length supported by MAX9218ECM+T at 35MHz?
The MAX9218ECM+T supports up to 12 meters of CAT5e cable at 35MHz (700Mbps) with bit-error rate <10⁻¹², as verified in Maxim's typical operating characteristics. Performance depends on cable quality, termination, and noise environment; shorter lengths (≤5m) are recommended for worst-case EMI conditions in engine compartments.
Does MAX9218ECM+T require an external oscillator for REFCLK?
Yes, MAX9218ECM+T requires an external LVTTL/LVCMOS reference clock applied to the REFCLK pin. The device accepts frequencies from 7MHz to 35MHz with ±2% tolerance - allowing use of low-cost crystals or oscillators without tight stability specs. No internal oscillator is present.
How does the MAX9218ECM+T handle loss of serial input signal?
When the LVDS input stops switching, MAX9218ECM+T drives LOCK high, sets all outputs (except PCLK_OUT) low, and routes REFCLK to PCLK_OUT. This fail-safe state alerts the system to link failure while maintaining clock continuity for diagnostics - critical for ASIL-B compliant display monitoring.
Can MAX9218ECM+T interface directly with a 1.8V FPGA I/O bank?
Yes, MAX9218ECM+T supports 1.8V logic levels via its independent VCCO supply. Set VCCO = 1.8V, and RGB_OUT[17:0], CNTL_OUT[8:0], DE_OUT, PCLK_OUT, and LOCK will swing rail-to-rail between 0V and 1.8V - eliminating level shifters and reducing board area and power consumption.
What is the purpose of the RNG0 and RNG1 pins on MAX9218ECM+T?
RNG0 and RNG1 configure the MAX9218ECM+T's operating frequency band and output transition time: 01 selects 7–15MHz (slow slew), 11 selects 15–35MHz (fast slew). Incorrect settings cause timing violations or excessive EMI - they must match the MAX9217 serializer's PCLK_IN frequency.
MAX9218ECM+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 48-LQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Deserializer
- Data Rate:
- 700Mbps
- Input Type:
- LVDS
- Output Type:
- LVCMOS, LVTTL
- Number of Inputs:
- 1
- Number of Outputs:
- 27
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-LQFP (7x7)
MAX9218ECM+T FAQ
1.How can I place an order for MAX9218ECM+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9218ECM+T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX9218ECM+T reliable?
The price and inventory of MAX9218ECM+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9218ECM+T is usually 5 days.
3.What payment methods are accepted for MAX9218ECM+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9218ECM+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9218ECM+T?
MAX9218ECM+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9218ECM+T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX9218ECM+T?
For technical support, including MAX9218ECM+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9218ECM+T requirements.
6.How does Aetrix verify that MAX9218ECM+T is sourced from the original manufacturer or authorized distributors?
All MAX9218ECM+T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX9218ECM+T meets industry standards.
7.What is the process for return or replacement of MAX9218ECM+T?
All MAX9218ECM+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX9218ECM+T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX9218ECM+T part is unused and in its original packaging.
Return procedure for MAX9218ECM+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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