22-Bit GMSL Serializer with Coax or STP Cable Drive

Rugged 1.5Gbps Serializer Flexibly Drives Up to 22 Bits on Coax or STP Cables in a Small 6mm × 6mm TQFN Package

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The MAX9273 compact serializer is designed to drive 50Ω coax or 100Ω shielded twisted-pair (STP) cable. The device pairs with the MAX9272 deserializer. The parallel input is programmable for single or double input. Double input allows higher pixel clock input frequency by registering two pixels of typical image-sensor video data before serializing. This doubles the maximum pixel clock frequency compared to single input.

The device features an embedded control channel that operates at 9.6kbps to 1Mbps in UART and mixed UART/I²C modes, and up to 400kbps in I²C mode. Using the control channel, a microcontroller (µC) is capable of programming serializer, deserializer, and camera (or any peripheral) registers at any time, independent of video timing. There is one dedicated GPIO, four optional GPIOs, and a GPO output, allowing remote power-up of a camera module, camera frame synchronization, and other uses. Error-detection and correction coding are programmable.

For driving longer cables, the serializer has programmable pre/deemphasis. Programmable spread spectrum is available on the serial output. The serial output meets ISO 10605 and IEC 61000-4-2 ESD standards.

The core supply range is 1.7V to 1.9V and the I/O supply range is 1.7V to 3.6V. The device is available in a 40-pin (6mm × 6mm) TQFN-EP package with 0.5mm lead pitch and operates over the -40°C to +105°C temperature range.
MAX9273: Typical Application Circuit MAX9273: Typical Application Circuit Enlarge+

Key Features

  • Ideal for Camera Applications
    • Drives Low-Cost 50Ω Coax Cable and FAKRA Connectors or 100Ω STP
    • Error Detection/Correction
    • 9.6kbps to 1Mbps Control Channel in I²C-to-I²C Mode with Clock Stretch Capability
    • Best-in-Class Supply Current: 75mA (max)
    • Double-Rate Clock for Megapixel Cameras
    • Serializer Pre/Deemphasis Allows 15m Cable at Full Speed
    • 40-Pin (6mm × 6mm) TQFN Package with 0.5mm Lead Pitch
  • High-Speed Data Serialization for Megapixel Cameras
    • Up to 1.5Gbps Serial-Bit Rate with Single or Double Input: 6.25MHz to 100MHz Clock
  • Multiple Control-Channel Modes for System Flexibility
    • 9.6kbps to 1Mbps Control Channel in UART-to-UART or UART-to-I²C Modes
  • Reduces EMI and Shielding Requirements
    • Output Programmable for 100mV to 500mV Single-Ended or 100mV to 400mV Differential
    • Programmable Spread Spectrum on the Serial Output Reduces EMI
    • Bypassable Input PLL for Parallel Clock Jitter Attenuation
    • Tracks Spread Spectrum on Parallel Input
  • Peripheral Features for Camera Power-Up and Verification
    • Built-In PRBS Generator for BER Testing of the Serial Link
    • Up to Five GPIO Ports
    • Dedicated "Up/Down" GPO for Camera Frame Sync Trigger and Other Uses
  • Reduces Power Requirements
    • Remote/Local Wake-Up from Sleep Mode
  • Meets Rigorous Automotive and Industrial Requirements
    • -40°C to +105°C Operating Temperature
    • ±8kV Contact and ±15kV Air ISO 10605 and IEC 61000-4-2 ESD Protection


  • Automotive Camera Systems
  • Navigation Displays

See parametric specs for High-Speed Interconnect (Differential Signaling) (120)

Part NumberSignal TypeSignal TypeFunctionsRxTxData Rates
RxTxSee Notes
$4.00 @1k

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

MAX9273COAXEVKIT: Evaluation Kit for the MAX9272 and MAX9273 with FAKRA Coaxial Cable
MAXCOAX2STP-HSD: Evaluation of Maxim Serializers/Deserializers with STP Cable
Request Reliability Report for: MAX9273 
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Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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