Analog Devices Inc./Maxim Integrated MAX9207EAI

Overview

MAX9207EAI from Maxim Integrated is a 10-bit parallel-to-serial LVDS serializer IC designed for high-speed unidirectional data transmission over PCB traces or twisted-pair cables. It accepts a 40MHz–66MHz LVCMOS/LVTTL reference clock (TCLK), delivers up to 660Mbps payload data rate (10 bits × 66MHz), and features low 140ps peak-to-peak deterministic jitter. It operates from a single +3.3V supply across –40°C to +85°C and pairs with deserializers such as MAX9208 in backplane, telecom, and networking interconnects.

For engineers reviewing the MAX9207EAI datasheet, MAX9207EAI pinout, MAX9207EAI application, or MAX9207EAI equivalent, key selection criteria include its 40–66MHz reference clock range, bus LVDS output compliance, programmable TCLK edge strobe, SYNC-driven resynchronization capability, and 28-pin SSOP package compatibility with industrial timing-critical serial links.

Technical Context

The MAX9207EAI implements a PLL-based clock recovery architecture that embeds framing bits (start/stop) to ensure transition density and enable robust deserializer lock without external clock distribution. Its internal parallel-to-serial conversion adds two framing bits per 10-bit word, producing a 12-bit serial stream at TCLK × 12 - yielding up to 792Mbps gross rate (66MHz × 12) while maintaining 660Mbps net payload throughput.

It supports three operational modes: initialization (PLL lock within 2049 TCLK cycles), synchronization (1024-cycle SYNC pattern burst on SYNC1/SYNC2 assertion), and data transmission. Output high-impedance control is provided independently via EN and PWRDN pins, with asynchronous EN behavior enabling dynamic bus sharing without disrupting internal timing.

Key Specifications

Pinout & Package

MAX9207EAI is housed in a 28-pin shrink small-outline package (SSOP) with exposed pad not present; pin pitch is 0.65mm, body dimensions 10.2mm × 5.3mm. Thermal resistance θ_JA = 68°C/W enables operation at full speed under industrial airflow constraints.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DS92LV1023 and MAX9205EAI+, the MAX9207EAI uniquely delivers 66MHz operation and 140ps deterministic jitter in the same 28-SSOP footprint - enabling higher throughput and tighter timing margins without PCB redesign.

Availability

MAX9207EAI is available at Aetrix Electronics and suitable for backplane interconnect, DSLAM line cards, and network router designs requiring stable component supply, long-term industrial temperature support, and guaranteed LVDS signal integrity.

Supply support for MAX9207EAI 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 U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and RF solutions for industrial, communications, and computing markets.

The MAX9205/MAX9207 product line was designed specifically for unidirectional, high-reliability LVDS serialization in telecom infrastructure - emphasizing hot-plug resilience, low jitter, and bus topology flexibility over bidirectional SERDES complexity.

FAQ

What is the maximum payload data rate supported by the MAX9207EAI?

The MAX9207EAI supports a maximum payload data rate of 660Mbps, calculated as 10 bits × 66MHz reference clock frequency. This represents the net throughput of user data, excluding the two embedded framing bits (start/stop) added per 10-bit word. The gross serial bit rate reaches 792Mbps (12 bits × 66MHz), but only 660Mbps constitutes usable payload bandwidth for system-level data transfer planning.

How does the MAX9207EAI achieve synchronization with a deserializer during hot insertion?

The MAX9207EAI uses its SYNC1 and SYNC2 inputs to initiate a standardized 1024-cycle SYNC pattern burst - six consecutive ones followed by six consecutive zeros, repeated every TCLK period. When either SYNC pin is held high for ≥6 TCLK cycles, the device transmits this pattern regardless of IN0–IN9 state. Deserializers like MAX9208 detect this pattern to rapidly reacquire PLL lock and frame alignment, enabling zero-interruption hot insertion without host software involvement.

Can the MAX9207EAI operate with a 50MHz reference clock?

Yes, the MAX9207EAI is fully specified to operate with a 50MHz reference clock (TCLK), which falls within its validated 40MHz–66MHz input range. At 50MHz, it delivers 500Mbps payload throughput (10 × 50MHz) and 600Mbps gross serial rate (12 × 50MHz). Electrical characteristics including jitter (140ps pk-pk), supply current (~45mA typ.), and timing parameters remain guaranteed per the datasheet across this entire range.

What is the function of the TCLK_R/F pin on the MAX9207EAI?

The TCLK_R/F pin on the MAX9207EAI selects the clock edge used to latch parallel input data (IN0–IN9): logic high configures rising-edge capture, while logic low configures falling-edge capture. This feature enables precise timing alignment with upstream clock domains - for example, matching the output phase of an FPGA register bank or compensating for board-level trace skew - without requiring external delay elements or clock inversion.

Does the MAX9207EAI require external components for basic operation?

No, the MAX9207EAI requires no external active components for core serialization functionality. Only passive decoupling capacitors are mandatory: 0.1µF and 0.001µF ceramic capacitors placed in parallel and as close as possible to each AVCC and DVCC pin (with the 0.001µF capacitor nearest the pin). No external resistors, crystals, or loop filters are needed - the PLL, latch, and LVDS driver are fully integrated.