Product Introduction:

Features

◎  Up to 10.3125Gbps Data rate per channel  

◎  Up to 100m on OM3 and 150 on OM4 MMF

◎  4 channels850nm VCSEL array

◎  Hot-pluggable QSFP+ form factor

◎  Single MPO connector receptacle

◎  Built-in digital diagnostic functions

◎  Single +3.3V power supply

◎  Low power consumption<1.2 W

◎  Operating case temperature: 0~+70°C

◎  4 channel full duplex transceiver modules

Applications 

◎  40GBASE-SR4 40G Ethernet

◎  Breakout to 4 x 10GBASE-SR Ethernet

◎  Other optical links

Standard

◎  Compliant with SFF-8436 Specification and QSFP+ MSA

◎  Compliant with IEEE 802.3ba 40GBASE-SR4

◎  Compliant with Telcordia GR-468-CORE

◎  RoHS Compliant

Table 1. Regulatory Compliance

Product Description

The transceiver is a four-channel, pluggable, parallel, fiber-optic QSFP+ SR4 transceiver module for 40GBASE-SR4 and 40G Ethernet, InfiniBand QDR applications. This high performance module is designed for data communication  and interconnect applications. It integrates four data lanes in each direction with 40Gb/s bandwidth. Each lane can operate at 10.3125Gb/s up to 100m transmission distance using OM3 fiber or 150m transmission distance using OM4 fiber. These modules are designed to operate over multimode fiber systems using a nominal wavelength of 850nm. The electrical interface uses a 38 pin  contact edge type connector. The optical interface uses an 12 fiber MTP(MPO) connector. This module incorporates Technologies proven circuit and Optical technology to provide reliable long life, high performance  and service.

Absolute Maximum Ratings

Table 2. Absolute Maximum Ratings

 (Exceeding the limits below may damage the transceiver module permanently)

Notes:

1. Non-condensing.

Recommend Operation Environment

Table 3. Recommend Operation Environment

Notes:

1. Non-condensing.

2. Measured with ITU-T G.651 OM3 MMF and OM4 MMF

Electricalptical Characteristics 

Table 4. Electrical Characteristics(TOP = 0 to +70 °C, VCC = 3.13 to 3.47 V)

Optical Characteristics 

Table 5. Optical Characteristics(TOP = 0 to +70 °C, VCC = 3.13 to 3.47 V)

Notes:

1. Average launch/receive power, each lane (min) is informative and not the principal indicator of signal strength. A transmitter with launch/receive power below this value cannot be compliant; however, a value above this does not ensure compliance.  

2. Hit Ratio 10^-12. hits/sample

3. Measured with worst ER=3.0dB, RPBS 2^31-1 test pattern @10.3125Gbps BER=<10^-12.

Pin Assignment

Table 6. Pin Descriptions

Notes:

1. Circuit ground is internally isolated from chassis ground.

2. Open collector; should be pulled up with a 4.7kΩ to 10kΩ resistor on host board to a voltage between 3.15Vand 3.6V.

Pin Assignment (continued)

Optical Interface Lanes and Assignment

The optical interface port is a male MPO connector, the keying feature of the MPO receptacle is on the top, then fibers are numbered left to right as 12 through 1 looking into the receptacle. The four fiber positions on the left (fibers 12, 11, 10, 9) are used for the optical transmit signals (Channel 1 through 4). The fiber positions on the right (fibers 4, 3, 2, 1) are used for the optical receive signals (Channel 4 through 1). The central four fibers (5, 6, 7, 8) may be physically present.

Digital Diagnostic Monitoring Interface

Digital diagnostics monitoring function is available on all QSFP+ module. A 2-wire serial interface provides user to contact with module. The structure of the memory is shown in Figure 4. The memory space is arranged into a lower, single page, address space of 128 bytes and multiple upper address space pages. This structure permits timely access to addresses in the lower page, such as Interrupt Flags and Monitors. Less time critical time entries, such as serial ID information and threshold settings, are available with the Page Select function. The interface address used is A0xh and is mainly used for time critical data like interrupt handling in order to enable a one-time-read for all data related to an interrupt situation. After an interrupt, IntL, has been asserted, the host can read out the flag field to determinethe affected channel and type of flag.

Table 7. Digital Diagnostic Monitor Characteristics

Table 8. Timing and Electrical

Recommended Circuit 

Figure 6, Recommended Interface Circuit

Mechanical Dimensions

Figure 7, Mechanical Dimensions

Ordering information

Table 9. Ordering information

Warnings

Handling Precautions: This device is susceptible to damage as a result of electrostatic discharge (ESD). A static free environment is highly recommended. Follow guidelines according to proper ESD procedures.

Laser Safety: Radiation emitted by laser devices can be dangerous to human eyes.Avoid eye exposure to direct or indirect radiation.