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Active: In Production.

Data Sheet

FULL DATA SHEET (PDF, 428kB) Download   E-Mail

Description

The MAX3740A is a high-speed VCSEL driver for small-form-factor (SFF) and small-form-factor pluggable (SFP) fiber optic LAN transmitters. It contains a bias generator, a laser modulator, and comprehensive safety features. The automatic power control (APC) adjusts the laser bias current to maintain average optical power over changes in temperature and laser properties. The driver accommodates common cathode and differential configurations. The MAX3740A operates up to 3.2Gbps. It can switch up to 15mA of laser modulation current and source up to 15mA of bias current. Adjustable temperature compensation is provided to keep the optical extinction ratio within specifications over the operating temperature range. The MAX3740A interfaces with the Dallas DS1858 to meet SFF-8472 timing and diagnostic requirements. The MAX3740A accommodates various VCSEL packages, including low-cost TO-46 headers. The MAX3740A safety circuit detects faults that could cause hazardous light levels and disables the VCSEL output. The safety circuits are compliant with SFF and SFP multisource agreements (MSA). The MAX3740A is available in a compact 4mm x 4mm, 24-pin thin QFN package and operates over the -40°C to +85°C temperature range.

An evaluation kit is available:  MAX3740AEVKIT  

Key Features		Applications/Uses
Supports all SFF-8472 Digital Diagnostics 2mA to 15mA Modulation Current 1mA to 15mA Bias Current Optional Peaking Current to Improve VCSEL Edge Speed Supports Common Cathode and Differential Configuration Automatic Power Control Safety Circuits Compliant with SFF and SFP MSAs 4mm x 4mm 24-Pin Thin QFN Package		Fibre Channel Optical Transmitters Gigabit Ethernet Optical Transmitters InfiniBand® Optical Transmitters Multirate (1Gbps to 3.2Gbps) SFF/SFP Modules

Diagram

Typical Operating Circuit

Application Notes

Application Note 3080: Accurate Power Control of the MAX3740A Laser Driver - MAX3740A Application Note 3766: HFTA-12.0: Measuring Crosstalk Penalty in High-Speed Bidirectional Serial Communication Modules - MAX3740A, MAX3740A

Evaluation Kits

MAX3740AEVKIT

Design Guides

Fiber (PDF) Communications (PDF)

Reliability Reports

Reliability Report: MAX3740A.pdf Show FIT data for: MAX3740A

Software/Models

MAX3740AETG IBIS Model

Ordering Information

Notes: Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Devices: 1-4 of 4

MAX3740A	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX3740AETG			Active	TQFN;24 pin;16.8 mm² Outline Drawing: 21-0139 (PDF) Land Pattern: 90-0022 (PDF) Use pkgcode/variation: T2444-4*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX3740AETG-T			Active	TQFN;24 pin;16.8 mm² Outline Drawing: 21-0139 (PDF) Land Pattern: 90-0022 (PDF) Use pkgcode/variation: T2444-4*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX3740AETG+			Active	TQFN;24 pin;16.8 mm² Outline Drawing: 21-0139 (PDF) Land Pattern: 90-0022 (PDF) Use pkgcode/variation: T2444+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX3740AETG+T			Active	TQFN;24 pin;16.8 mm² Outline Drawing: 21-0139 (PDF) Land Pattern: 90-0022 (PDF) Use pkgcode/variation: T2444+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis

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Description   Key Features   Applications/Uses   Key Specifications   Diagram

Data Sheet   Application Notes   Design Guides   Engineering Journals   Reliability Reports   Software/Models   Evaluation Kits

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