Analog Devices Inc./Maxim Integrated MAX3935EGJ

The MAX3935 drives a 50-ohm electro-absorption modulator at NRZ data rates up to 10.7 Gbps. It accepts differential ECL or ground-referenced CML data and clock signals, with 50-ohm on-chip input termination. The optional retiming latch can reduce input-pattern-dependent jitter when a synchronous clock is available. The driver operates from a nominal -5.2 V supply.

The manufacturer's exact ordering row specifies 32-pin QFN, package code G3255-I. The catalog describes the case as 32-VFQFN Exposed Pad. The package workbook contains that exact catalog label at row 30, but its registered local JPG is missing. Confirm the mechanical outline and exposed-pad land pattern against the controlled manufacturer drawing.

Assembly checks

• Verify G3255-I dimensions and pin-one location.
• Follow the manufacturer's exposed-pad grounding and thermal guidance.
• Inspect moisture handling and reel or tray lot documentation.

Do not approve the missing package illustration.

The Rev. 2 data sheet provides numbered pin descriptions. Use that table and the package drawing for wiring; the following groups are a functional summary.

Typical values depend on test conditions; consult the controlled data sheet for full electrical limits.

Other high-speed optical drivers are not drop-in substitutes. Confirm EAM versus laser-diode load, negative supply, modulation swing, bias topology, data/clock logic levels, retiming controls, package footprint and line-rate requirements. No unverified internal alternative link is included.

ADI's MAX3935 product page lists the device as obsolete. The manufacturer's Rev. 2 data sheet gives the exact EGJ ordering code and the 32-pin pin-function table. Independent-stock listings vary widely, so price, authenticity and availability require current supplier confirmation.

For this obsolete part, request manufacturer traceability, date and lot codes, original packaging and storage records. Inspect QFN marking and condition, and qualify any independent-market lot using incoming inspection and functional testing appropriate to the optical system.

Keep this page under review until the registered package JPG, controlled footprint, exact-lot provenance and current distributor inventory and tier pricing have been checked. Human approval is required before publication.