Product Introduction:

Features 

Supports 41.25Gb/s aggregate bit rate 

Integrated 4 CWDM lanes MUX/DEMUX 

Up to 10km transmission on single mode fiber (SMF) 

XLPPI electrical interface 

Duplex LC receptacles 

Hot pluggable QSFP+ form factor 

Maximum power consumption 3.5W 

Case operating temperature range：0℃~+70℃ 

RoHS Compliant 

DDMI function available with internally calibrated mode 

I2C management interface

Applications

Data Center 

Ethernet Switches

Standards

Compliant with IEEE802.3ba

Compliant with SFF-8436

RoHS Compliant

General Description

40G QSFP+ LR4 integrates four transmitters and receivers into one module. The central wavelengths of the channels are 1271, 1291, 1311 and 1331 nm as members of the CWDM 

wavelength grid defined in ITU-T G.694.2. In the transmitter side, the four lanes of optical data channels are optically multiplexed by the integrated optical multiplexer. In the receive side, the four lanes of optical data channels are optically de-multiplexed by the integrated optical de-multiplexer. Each data channels is recovered by a PIN photo-detector and trans-impedance amplifier, retimed.The product is designed with form factor, optical/electrical connection and digital diagnostic interface according to the QSFP+ IEEE802.3ba 40GBASE-LR4 and compliant to SFF-8436.

Specification

Note3. Measured with a PRBS 231

-1 test pattern, @10.3125Gbps, ER=4dB, BER<10-12

Note4. The LOS Hysteresis minimizes ‘chatter’ on the output line. In principle, Hysteresis alone does not

guarantee chatter-free operation

Pin definition

Package Outline

Dimensions are in millimeters. (unit: mm)