Analog Devices Inc./Maxim Integrated MAX9208EAI+T

Overview

MAX9208EAI+T from Maxim Integrated is a 10-bit BLVDS deserializer IC that converts high-speed serial LVDS data streams (400–600Mbps) into parallel LVCMOS/LVTTL outputs and a recovered clock, used in backplane and cable-based interconnects for telecom infrastructure and industrial imaging systems.

For engineers reviewing the MAX9208EAI+T datasheet, MAX9208EAI+T pinout, MAX9208EAI+T application, or MAX9208EAI+T equivalent, key selection criteria include its 40–60MHz reference clock range, 320ps peak-to-peak input jitter tolerance at 60MHz, programmable RCLK strobe edge, and support for hot-insertion without system interruption.

Technical Context

The MAX9208EAI+T implements a PLL-based clock recovery architecture synchronized to incoming BLVDS serial data, achieving frequency lock, bit lock, and frame lock to generate a word-aligned 10-bit parallel output and parallel-rate clock. It supports both point-to-point and bus topologies with 54Ω–100Ω differential termination.

Its digital deframing logic identifies embedded framing bits (start high + end low) to reconstruct 10-bit words from 12-bit serial symbols. Initialization supports pseudorandom data lock (no sync pattern required) and fast sync-pattern lock (≤42 × tRFCP), enabling robust operation in hot-plug and dynamic link scenarios.

Key Specifications

Pinout & Package

MAX9208EAI+T is housed in a 28-pin SSOP package (package code A28+4, outline 21-0056) with exposed pad not electrically connected. Pin spacing is 0.025", body width 0.209", and recommended land pattern per Maxim document 90-0095.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DS92LV1224 and MAX9206EAI+, the MAX9208EAI+T offers optimal balance of speed (600Mbps), jitter resilience (320ps), and industrial temperature support in a proven 28-pin SSOP footprint-making it ideal for mid-range telecom and imaging interconnects where 60MHz operation is required but 66MHz headroom is unnecessary.

Availability

MAX9208EAI+T is available at Aetrix Electronics and suitable for cellular base station backhaul, DSLAM line card interconnect, and industrial machine vision camera designs requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX9208EAI+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) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and RF solutions for industrial, communications, and automotive markets.

The MAX9206/MAX9208 product line was designed specifically for high-reliability, low-skew serial-to-parallel conversion in telecom infrastructure and imaging systems-emphasizing jitter tolerance, hot-plug capability, and compatibility with legacy BLVDS serializer families like MAX9205/MAX9207.

FAQ

What is the maximum serial data rate supported by the MAX9208EAI+T?

The MAX9208EAI+T supports a maximum serial data rate of 600Mbps, achieved when operating with a 60MHz reference clock and 10-bit parallel data width. This rate is specified across the full -40°C to +85°C temperature range and assumes compliant BLVDS input signal integrity and proper termination. The MAX9208EAI+T achieves this performance while maintaining 320ps peak-to-peak input jitter tolerance at 60MHz.

Does the MAX9208EAI+T require an external serializer to function?

No, the MAX9208EAI+T functions as a standalone deserializer and does not require an external serializer to operate. It accepts raw BLVDS serial input (RI+/RI-) and recovers clock and data autonomously. However, for complete SerDes link implementation, it is commonly paired with Maxim's MAX9207 or MAX9205 serializers-but the MAX9208EAI+T itself needs no companion IC to perform deserialization.

How does the RCLK_R/F pin affect timing behavior in the MAX9208EAI+T?

The RCLK_R/F pin on the MAX9208EAI+T selects whether the ROUT_ data outputs are latched on the rising edge (RCLK_R/F = high) or falling edge (RCLK_R/F = low) of the recovered RCLK signal. This programmability allows system designers to compensate for board-level propagation delays and align data capture timing precisely with downstream logic-critical for meeting setup/hold margins in FPGA or ASIC interfaces.

Can the MAX9208EAI+T maintain lock during hot insertion?

Yes, the MAX9208EAI+T supports hot insertion via its pseudorandom data lock capability. It can achieve lock to arbitrary BLVDS data patterns without requiring sync patterns-eliminating the need to pause or reconfigure the serial link. This allows safe insertion of a new MAX9208EAI+T-equipped module into an active system, with LOCK going low within typical lock times (e.g., ~0.144µs average at 40MHz) once valid data is detected.

What is the purpose of the LOCK signal in the MAX9208EAI+T?

The LOCK signal in the MAX9208EAI+T is an open-drain status output indicating successful acquisition of frequency lock, phase lock, and frame synchronization to the incoming BLVDS stream. LOCK goes low only when all three conditions are met-and remains low as long as valid framing is maintained. It stays active even when REN = low, enabling system-level monitoring of serial link health independent of output driver state.