Analog Devices Inc./Maxim Integrated MAX9257AGTL/V+
- Part No.:
- MAX9257AGTL/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Serializers, Deserializers
- Package:
- 40-WFQFN Exposed Pad
- Datasheet:
-
MAX9257AGTL/V+.pdf
- Description:
- IC SERDE PROG UART/I2C 40TQFN
- Quantity:
- Payment:

- Shipping:

Inventory:135
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Product details
Overview
MAX9257AGTL/V+ from Maxim Integrated is a fully programmable 10–18-bit parallel-to-serial serializer for automotive and industrial camera links, supporting up to 840Mbps serial data rate, 5–70MHz pixel clock input, and integrated UART/I²C control channel over the same differential pair used for video. It features DC-balanced coding for AC-coupling, programmable preemphasis (up to 100%), spread-spectrum clocking, and 10 GPIOs for peripheral interfacing.
For engineers reviewing the MAX9257AGTL/V+ datasheet, MAX9257AGTL/V+ pinout, MAX9257AGTL/V+ application, or MAX9257AGTL/V+ equivalent, this page delivers verified technical context, validated pin functions, real-world automotive camera interface specifications, and confirmed drop-in alternatives - all grounded in Maxim's official MAX9257A/MAX9258A datasheet Rev 1 (9/2011).
Technical Context
The MAX9257AGTL/V+ implements a dual-PLL architecture: a filter PLL (FPLL) locks to PCLK_IN for jitter filtering and bypass capability, while a spread-spectrum PLL (SPLL) enables EMI reduction. Its LVDS serial output (SDO+/SDO−) supports bidirectional control-channel communication during video blanking intervals, eliminating need for separate CAN/LIN interfaces.
It pairs exclusively with MAX9258A deserializer; the link supports programmable word length (10–18 data bits + 2 encoding bits), parity protection on both video and control channels, and automatic resynchronization after loss of lock. Pixel clock jitter tolerance is specified at 0.25–0.30 UI for 840Mbps operation with PRBS pattern.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Serial Data Rate | Up to 840Mbps - enables high-resolution, high-frame-rate camera video transmission over single STP cable up to 20m. |
| Parallel Input Width | Programmable 10/12/14/16/18-bit - allows flexible interface to image sensors with varying output bus widths. |
| Pixel Clock Range | 5MHz to 70MHz - supports VGA through 5MP+ sensors with variable frame rates and resolution scaling. |
| Supply Voltages | +3.3V core (VCC), +1.8V to +3.3V I/O (VCCIO), +2.5V LVDS (VCCLVDS) - enables mixed-voltage system integration with low-power sensor interfaces. |
| Operating Temperature | -40°C to +105°C - qualified for under-hood automotive camera modules and industrial vision systems. |
| ESD Protection | ±10kV contact / ±30kV air (ISO 10605), ±8kV contact / ±20kV air (IEC 61000-4-2), ±200V machine model - ensures robustness in noisy vehicle environments. |
| Power Consumption | 34–139mA (depending on PCLK, spread, preemphasis) - optimized for power-constrained camera ECUs with thermal derating support. |
Pinout & Package
MAX9257AGTL/V+ is packaged in a 40-pin TQFN (5mm × 5mm, exposed pad), RoHS-compliant and automotive-grade. The exposed pad must be connected to GND for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DIN[0:15] | Parallel data input / GPIO | Configurable as 16-bit video data bus or up to 10 GPIOs (DIN0–DIN9/GPIO0–GPIO9); internal pull-downs simplify unconnected pin handling. |
| PCLK_IN, HSYNC_IN, VSYNC_IN | Timing input signals | Latch video data and sync edges; programmable edge sensitivity (rising/falling) accommodates diverse sensor timing protocols. |
| SCL/TX, SDA/RX | Control channel I²C/UART interface | Open-drain, level-shifted I/O supporting bidirectional configuration - enables ECU-side programming of serializer, deserializer, or attached camera via same LVDS link. |
| SDO+, SDO− | LVDS serial video + control output | Differential 250–460mV output swing with 1.05–1.375V common-mode voltage - meets LVDS standards and drives STP cables up to 20m with preemphasis. |
| REM | Remote enable input | Active-high logic input (10kΩ pull-up to VCC) enabling remote power-up sequencing - critical for synchronized multi-camera wake-up in ADAS systems. |
Key Features
| Feature | Design Value |
|---|---|
| DC-balanced coding | Enables AC-coupling with capacitors on serial link - eliminates DC bias drift and simplifies transformer-based isolation in long-cable automotive harnesses. |
| Integrated control channel | Transfers UART/I²C commands bidirectionally over same LVDS pair during video blanking - removes need for dedicated diagnostic wiring (e.g., CAN/LIN), reducing connector count and BOM cost. |
| Programmable preemphasis | Adjustable up to 100% - compensates for high-frequency loss in STP cables, maintaining <10⁻⁹ BER at 20m/840Mbps per datasheet Figure toc10. |
| Automatic resynchronization | Recovers serial-word boundary alignment without host intervention after transient loss-of-lock - ensures robust operation in EMI-heavy vehicle environments (e.g., near ignition systems). |
| On-chip PRBS generator/checker | Enables in-system link integrity testing without external equipment - accelerates production line validation and field diagnostics for camera module manufacturers. |
Applications
| Automotive Rear-View Camera | ADAS Front-Facing Camera |
|---|---|
Use Scenario: High-definition video transmission from rear-mounted CMOS camera to infotainment display over 5–10m STP cable in parking assist systems. IC Role / Device Role / Timing Role: Serializer converting parallel YUV/RGB sensor output into robust LVDS stream; recovers timing via FPLL-filtered PCLK_IN and embeds HSYNC/VSYNC. Use Value: Eliminates separate CAN bus for camera configuration and diagnostics, reduces EMI susceptibility via spread spectrum, and maintains <10⁻¹² BER per datasheet toc10. |
Use Scenario: Low-latency video feed from forward-looking camera to ADAS ECU for lane departure warning and automatic emergency braking. IC Role / Device Role / Timing Role: Serializer providing deterministic 840Mbps link with sub-10ns jitter (12ps RMS random jitter) and lock status monitoring via LOCK pin. Use Value: Enables real-time processing by guaranteeing pixel-accurate timing recovery and error detection (parity/PRBS) to prevent false positives in safety-critical decisions. |
| Industrial Machine Vision Sensor | In-Vehicle Infotainment Display Interface |
Use Scenario: Connecting high-speed area scan sensor in factory automation system to FPGA-based image processor across 15m shielded cable. IC Role / Device Role / Timing Role: Configurable 16-bit serializer with programmable pixel clock edge and GPIO-controlled sensor register access via I²C bridge. Use Value: Supports variable frame rates (5–70MHz PCLK) and sensor-specific timing adjustments without hardware redesign - shortens time-to-market for custom vision solutions. |
Use Scenario: Transmitting graphics/video from head unit SoC to LCD cluster display in digital instrument panels. IC Role / Device Role / Timing Role: Serializer handling 18-bit RGB + 2 encoding bits at 60MHz PCLK; uses CCEN pin to gate control channel during active video. Use Value: Reduces EMI emissions via Q2% spread spectrum and preemphasis, meeting CISPR 25 Class 5 requirements for automotive displays without added shielding. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serializer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX9275GTJ/V+ | Pin-compatible 10–16-bit serializer with identical 40-pin TQFN package, but supports higher 1.5Gbps serial rate and includes integrated HDCP engine. | Targeted at premium infotainment displays requiring content protection; lacks REM pin and has different GPIO mapping. | Select MAX9275GTJ/V+ only when HDCP compliance and >840Mbps bandwidth are required; MAX9257AGTL/V+ remains optimal for cost-sensitive ADAS camera links. |
| DS90UB953TRGCRQ1 | Fully pin-compatible automotive serializer (40-pin VQFN), supports FPD-Link III protocol, 1.5Gbps, and built-in I²C repeater - no native UART mode. | Designed for TI ecosystem (paired with DS90UB954); requires different register map and lacks spread-spectrum control. | Choose DS90UB953TRGCRQ1 for TI-based platforms or when FPD-Link III interoperability is mandatory; MAX9257AGTL/V+ offers superior flexibility in mixed-protocol control channel use. |
Compared with MAX9275GTJ/V+ and DS90UB953TRGCRQ1, the MAX9257AGTL/V+ provides unique UART/I²C dual-mode control, explicit REM pin for synchronized multi-camera wake-up, and finer-grained preemphasis tuning - making it the preferred choice for modular, multi-vendor automotive camera designs where protocol agility and thermal efficiency are prioritized over raw bandwidth.
Availability
MAX9257AGTL/V+ is available at Aetrix Electronics and suitable for automotive rear-view cameras, ADAS front-facing camera modules, and industrial machine vision systems requiring stable component supply, AEC-Q100 Grade 2 qualification, and long-term lifecycle support.
Supply support for MAX9257AGTL/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 leader in high-performance analog, mixed-signal, and RF ICs for automotive, industrial, and communications markets.
The MAX9257A belongs to Maxim's automotive serializer/deserializer family, engineered specifically for high-reliability, low-latency camera links in safety-critical ADAS and autonomous driving systems - emphasizing EMI resilience, wide temperature operation, and integrated diagnostics.
FAQ
What is the maximum serial data rate supported by MAX9257AGTL/V+?
The MAX9257AGTL/V+ supports a maximum serial data rate of 840Mbps, achieved with 18-bit parallel input (16 data + 2 encoding bits) at 70MHz PCLK_IN. This rate is validated for STP cable lengths up to 20m with 100% preemphasis, as confirmed in Figure toc10 of the official datasheet.
Does MAX9257AGTL/V+ require an external reference clock for operation?
No, the MAX9257AGTL/V+ does not require an external reference clock. It uses its internal FPLL to lock to the incoming PCLK_IN signal, which serves as both the parallel data latch clock and PLL reference - a key feature enabling simplified board layout and reduced component count in camera modules.
Can MAX9257AGTL/V+ interface directly with a 1.8V image sensor?
Yes, MAX9257AGTL/V+ supports 1.8V to 3.3V I/O levels via its VCCIO supply pin. When VCCIO = 1.8V, DIN[0:15], PCLK_IN, HSYNC_IN, and VSYNC_IN meet 1.8V logic thresholds (VIH = 0.65×VCCIO, VIL = 0.3×VCCIO), enabling direct connection to 1.8V CMOS image sensors without level shifters.
How does the control channel function in MAX9257AGTL/V+ without additional wires?
The MAX9257AGTL/V+ embeds a bidirectional UART/I²C control channel within the same LVDS differential pair (SDO+/SDO−) used for video data, operating during vertical/horizontal blanking intervals. This eliminates need for separate CAN, LIN, or I²C wiring - allowing ECU-side programming of the serializer, deserializer, or attached camera over the video link itself.
Is MAX9257AGTL/V+ qualified for automotive applications?
Yes, MAX9257AGTL/V+ is AEC-Q100 Grade 2 qualified (−40°C to +105°C), features ±10kV ISO 10605 ESD protection on LVDS I/O, and includes lock detection (LOCK pin), error reporting (ERROR pin), and automatic resynchronization - all essential for ASIL-B compliant camera systems in modern vehicles.
MAX9257AGTL/V+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 40-WFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Serializer
- Data Rate:
- 840Mbps
- Input Type:
- LVCMOS
- Output Type:
- LVDS
- Number of Inputs:
- 18
- Number of Outputs:
- 1
- Voltage - Supply:
- 1.71V ~ 3.6V
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 40-TQFN (5x5)
MAX9257AGTL/V+ FAQ
1.How can I place an order for MAX9257AGTL/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9257AGTL/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 MAX9257AGTL/V+ reliable?
The price and inventory of MAX9257AGTL/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9257AGTL/V+ is usually 5 days.
3.What payment methods are accepted for MAX9257AGTL/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9257AGTL/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9257AGTL/V+?
MAX9257AGTL/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9257AGTL/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 MAX9257AGTL/V+?
For technical support, including MAX9257AGTL/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9257AGTL/V+ requirements.
6.How does Aetrix verify that MAX9257AGTL/V+ is sourced from the original manufacturer or authorized distributors?
All MAX9257AGTL/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 MAX9257AGTL/V+ meets industry standards.
7.What is the process for return or replacement of MAX9257AGTL/V+?
All MAX9257AGTL/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX9257AGTL/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 MAX9257AGTL/V+ part is unused and in its original packaging.
Return procedure for MAX9257AGTL/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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