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Analog Devices Inc./Maxim Integrated MAX9247ECM/V+
- Part No.:
- MAX9247ECM/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Serializers, Deserializers
- Package:
- 48-LQFP
- Datasheet:
-
MAX9247ECM/V+.pdf
- Description:
- IC SERIALIZER LVDS 27BIT 48-LQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MAX9247ECM/V+ from Maxim Integrated is a 27-bit, DC-balanced LVDS serializer for automotive-grade digital video links, converting 18-bit RGB video and 9-bit control data into a single serial stream at 2.5MHz–42MHz parallel clock rates. It features integrated 100Ω LVDS termination, preemphasis, common-mode filtering, and ISO 10605 ±10kV contact ESD protection. Used in navigation display interfaces with shielded twisted-pair cabling up to 10m.
For engineers reviewing the MAX9247ECM/V+ datasheet, MAX9247ECM/V+ pinout, MAX9247ECM/V+ application, or MAX9247ECM/V+ equivalent, this page delivers verified electrical specs, validated automotive temperature range (–40°C to +85°C), LQFP-48 package mapping, and confirmed interoperability with MAX9248/MAX9250 deserializers - all critical for in-vehicle infotainment system design and EMI-sensitive layout planning.
Technical Context
The MAX9247ECM/V+ implements a proprietary DC-balanced encoding scheme that embeds 2 overhead bits (EN0/EN1) in 20-bit video words and 1 overhead bit in 19-bit control words, enabling AC-coupling and reducing low-frequency EMI. Its PLL locks to PCLK_IN with 17,100-cycle lock time and supports four selectable frequency ranges via RNG[1:0] pins.
It uses dual supply domains: VCCIN (1.71V–3.6V) powers all single-ended inputs (RGB_IN[17:0], CNTL_IN[8:0], DE_IN, PCLK_IN), while +3.3V core (VCC), PLL (VCCPLL), and LVDS (VCCLVDS) supplies are isolated with dedicated grounds. Preemphasis (PRE pin) boosts edge amplitude by 40–50% for improved eye opening over STP cable.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Parallel Clock Range | 2.5MHz to 42MHz - defines maximum video pixel rate and determines serial data rate (50–840Mbps) |
| Differential Output Voltage (VOD) | 250–450mV - ensures robust LVDS signal integrity across 100Ω differential load |
| Supply Voltages | +3.3V core (VCC), 1.71–3.6V input logic (VCCIN), separate VCCLVDS and VCCPLL - enables mixed-voltage interface and noise isolation |
| Operating Temperature | –40°C to +85°C - AEC-Q100–compatible automotive grade, validated for under-hood and display module environments |
| ESD Protection | ISO 10605 ±10kV contact / ±30kV air on LVDS outputs - meets automotive system-level EMC requirements |
| Serializer Delay | 3.10 × tT + 2.0ns to 3.10 × tT + 8.0ns - deterministic latency critical for synchronous video timing alignment |
| Peak-to-Peak Jitter | 150ps - guarantees <10⁻¹² BER over 2m CAT5 at 42MHz, enabling reliable high-resolution video transmission |
Pinout & Package
MAX9247ECM/V+ is housed in a 48-lead LQFP package (7mm × 7mm, 0.5mm pitch) with exposed thermal pad. Pin assignments follow standard Maxim LQFP-48 land pattern (Outline No. 21-0054, Land Pattern No. 90-0093).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1,13,37) | Digital ground reference | Common return for input buffers and digital core; must be low-inductance connection to PCB ground plane |
| VCCIN (Pin 2) | Input logic supply | Configures voltage threshold for RGB_IN/CNTL_IN/DE_IN/PCLK_IN (1.71–3.6V); bypass with 0.1µF + 0.001µF |
| RGB_IN[17:0] (Pins 3–10,39–48) | Video data inputs | 18-bit parallel RGB latch on rising PCLK_IN when DE_IN = high; internally pulled down |
| CNTL_IN[8:0] (Pins 11,12,15–21) | Control data inputs | 9-bit parallel control (e.g., HSYNC/VSYNC) latched when DE_IN = low; C0–C4 are single-bit-error tolerant |
| DE_IN (Pin 22) | Data-enable control | Switches between video and control phases; must toggle for proper transition word insertion and deserializer sync |
| PCLK_IN (Pin 23) | Parallel clock input | Provides latch timing and PLL reference; duty cycle 35–65%; rise/fall time ≤2.5ns |
| PRE (Pin 25) | Preemphasis enable | Drives high to boost output edge amplitude by 40–50%, improving eye diagram over long STP cables |
| RNG[1:0] (Pins 35,36) | Frequency range select | Binary-coded selection of 4 clock bands (2.5–5MHz to 20–42MHz); sets PLL loop bandwidth and jitter performance |
| OUT+/OUT− (Pins 33,32) | LVDS serial output | Differential pair with internal 100Ω termination; supports AC-coupling via external series capacitors |
| CMF (Pin 29) | Common-mode filter node | Connects to junction of internal 50Ω resistors; adding capacitor to LVDSGND reduces common-mode EMI |
Key Features
| Feature | Design Value |
|---|---|
| DC-balanced proprietary encoding | Enables AC-coupling for galvanic isolation and eliminates baseline wander over long cables |
| Programmable preemphasis (PRE pin) | Improves signal rise/fall times by 40–50% at transitions, extending usable cable length to >10m STP |
| Five single-bit-error-tolerant control inputs (C0–C4) | Ensures robust recovery of critical timing signals (e.g., VSYNC) even with bit errors on noisy links |
| Integrated 100Ω LVDS termination | Eliminates external resistors, reduces BOM count, and damps reflections without layout sensitivity |
| Automotive qualification (/V suffix) | Validated for –40°C to +85°C operation with full spec compliance, meeting AEC-Q100 stress test requirements |
| Separate VCCIN supply domain | Allows direct interfacing to 1.8V, 2.5V, or 3.3V video sources without level shifters or voltage translation |
Applications
| Navigation System Displays | In-Vehicle Entertainment Systems |
|---|---|
Use Scenario: High-resolution TFT-LCD cluster display driven by MCU or SoC graphics engine using 18-bit RGB and embedded timing signals. IC Role / Device Role / Timing Role: Parallel-to-serial converter synchronizing video and control data onto single LVDS pair; handles blanking-period control data insertion. Use Value: Reduces 27-wire ribbon cable to 2-wire STP, cutting EMI, weight, and connector cost while maintaining <10⁻¹² BER at 42MHz pixel clock. |
Use Scenario: Rear-seat entertainment display receiving HDMI-sourced video converted to LVDS via bridge IC. IC Role / Device Role / Timing Role: Serializer accepting parallel RGB and sync signals from video processor; supports dynamic range switching via control channel during blanking. Use Value: Proprietary encoding maintains DC balance across AC-coupled link, enabling isolation between battery-powered display and main infotainment unit. |
| Video Cameras | LCD Modules |
Use Scenario: Automotive surround-view camera module transmitting raw sensor data to central ADAS ECU. IC Role / Device Role / Timing Role: Video serializer embedding camera-specific metadata (e.g., lens distortion coefficients) in control words during vertical blanking. Use Value: Single-bit-error tolerance on C0–C4 ensures critical calibration data survives EMI-prone under-vehicle cabling runs up to 8m. |
Use Scenario: Industrial or medical LCD panel with integrated timing controller requiring serialized video input. IC Role / Device Role / Timing Role: Interface IC converting parallel RGB from FPGA or ASIC to robust LVDS stream compatible with MAX9248/MAX9250 deserializers. Use Value: Programmable RNG[1:0] allows precise clock range matching to panel native timing, minimizing PLL-induced jitter on sensitive analog video paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LVDS serializer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX9247ECM+ | Same electrical specs and pinout, but rated for –40°C to +85°C without automotive qualification | Lacks ISO 10605 ESD validation and AEC-Q100 stress testing; not approved for safety-critical vehicle systems | Select MAX9247ECM/V+ for production automotive programs requiring documented automotive reliability; use MAX9247ECM+ only in non-automotive industrial displays. |
| MAX9275AETL+ | Higher-speed 36-bit serializer (up to 100MHz PCLK), GMSL2-compatible, different pinout and protocol stack | Supports longer cable runs (>15m), bidirectional control channel, and integrated diagnostics - incompatible with MAX9248/MAX9250 deserializers | Choose MAX9275AETL+ only when upgrading to GMSL2 architecture; MAX9247ECM/V+ remains optimal for legacy MAX9248-based designs with cost and footprint constraints. |
Compared with MAX9247ECM+ and MAX9275AETL+, the MAX9247ECM/V+ uniquely combines automotive qualification, drop-in compatibility with existing MAX9248/MAX9250 links, and minimal BOM impact - making it the only choice for cost-sensitive, volume automotive display modules requiring proven field reliability.
Availability
MAX9247ECM/V+ is available at Aetrix Electronics and suitable for navigation system displays, in-vehicle entertainment systems, and automotive video cameras requiring stable component supply, automotive-grade traceability, and long-term lifecycle support.
Supply support for MAX9247ECM/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 power management ICs for automotive, industrial, and communications markets.
The MAX9247 belongs to Maxim's automotive-qualified high-speed serial link product line, designed specifically for EMI-resilient, long-cable digital video transport in safety-critical vehicle display and camera systems.
FAQ
What is the operating temperature range for MAX9247ECM/V+?
The MAX9247ECM/V+ is specified for –40°C to +85°C ambient operation, with full electrical performance guaranteed across this range. This automotive-grade rating aligns with AEC-Q100 stress test requirements and supports deployment in instrument clusters, center consoles, and other thermally demanding vehicle locations where the MAX9247ECM/V+ must maintain stable serialization without derating.
Which deserializers are compatible with MAX9247ECM/V+?
The MAX9247ECM/V+ is designed to pair exclusively with the MAX9248 and MAX9250 deserializers, forming a complete point-to-point digital video link. It also supports interoperability with the MAX9218 deserializer for clock frequencies below 35MHz. All three deserializers share identical protocol framing, encoding, and timing requirements - ensuring seamless integration without firmware or layout changes when using the MAX9247ECM/V+.
How does the PRE pin affect signal integrity in MAX9247ECM/V+?
Driving the PRE pin high on the MAX9247ECM/V+ activates preemphasis, increasing output edge amplitude by 40–50% for ~360ps during data transitions. This compensates for high-frequency loss in STP cables, widening the eye diagram and enabling reliable operation over 10m CAT5 or shielded twisted-pair - directly validated in the MAX9247ECM/V+ datasheet eye diagrams at 42MHz.
What is the purpose of the RNG[1:0] pins on MAX9247ECM/V+?
The RNG[1:0] pins on the MAX9247ECM/V+ configure the PLL's operating frequency band (2.5–5MHz, 5–10MHz, 10–20MHz, or 20–42MHz), optimizing loop bandwidth and jitter performance for the applied PCLK_IN frequency. Selecting the correct range ensures stable lock, minimal phase noise, and compliance with the MAX9247ECM/V+'s specified 150ps peak-to-peak jitter across its full 2.5–42MHz operating window.
Does MAX9247ECM/V+ require external termination resistors?
No, the MAX9247ECM/V+ integrates a matched 100Ω differential termination resistor between OUT+ and OUT−, eliminating the need for external components. This internal termination remains active when PWRDWN is high and is automatically switched out during power-down mode, placing the outputs in high-impedance state - simplifying PCB layout and reducing bill-of-materials cost for every MAX9247ECM/V+ implementation.
MAX9247ECM/V+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 48-LQFP
- Packaging:
- Tray
- Product Status:
- Active
- Function:
- Serializer
- Data Rate:
- 756Mbps
- Input Type:
- LVCMOS, LVTTL
- Output Type:
- LVDS
- Number of Inputs:
- 27
- Number of Outputs:
- 1
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-LQFP (7x7)
MAX9247ECM/V+ FAQ
1.How can I place an order for MAX9247ECM/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9247ECM/V+ 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 MAX9247ECM/V+ reliable?
The price and inventory of MAX9247ECM/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9247ECM/V+ is usually 5 days.
3.What payment methods are accepted for MAX9247ECM/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9247ECM/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9247ECM/V+?
MAX9247ECM/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9247ECM/V+ 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 MAX9247ECM/V+?
For technical support, including MAX9247ECM/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9247ECM/V+ requirements.
6.How does Aetrix verify that MAX9247ECM/V+ is sourced from the original manufacturer or authorized distributors?
All MAX9247ECM/V+ 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 MAX9247ECM/V+ meets industry standards.
7.What is the process for return or replacement of MAX9247ECM/V+?
All MAX9247ECM/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX9247ECM/V+, 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 MAX9247ECM/V+ part is unused and in its original packaging.
Return procedure for MAX9247ECM/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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