KEY  Features 

High Channel Capacity: 40 Gbps per module

Up to 11.1Gbps Data rate per channel

Maximum link length of 100m links on OM3 multimode fiber

Or 150m links on OM4 multimode fiber

High Reliability 850nm VCSEL technology

Electrically hot-pluggable

Digital diagnostic SFF-8436 compliant

Case operating temperature range:0°C to 70°C  

Power dissipation < 1.5 W

Application

40G Ethernet

Infiniband QDR

Fiber channel

STANDARD

Compliant to IEEE 802.3ba

Compliant to SFF-8436

RoHS Compliant.

HC’s QXP85A4-02D are designed for use in 40 Gigabit per second links over multimode fiber. They are compliant with the QSFP+ MSA and IEEE 802.3ba 40GBASE-SR4.

The optical transmitter portion of the transceiver incorporates a 4-channel VCSEL (Vertical Cavity Surface Emitting Laser) array, a 4-channel input buffer and laser driver, diagnostic monitors, control and bias blocks. For module control, the control interface incorporates a Two Wire Serial interface of clock and data signals. Diagnostic monitors for VCSEL bias, module temperature, transmitted optical power，received optical power and supply voltage are implemented and results are available through the TWS interface. Alarm and warning thresholds are established for the monitored attributes. Flags are set and interrupts generated when the attributes are outside the thresholds. Flags are also set and interrupts generated for loss of input signal (LOS) and transmitter fault conditions. All flags are latched and will remain set even if the condition initiating the latch clears and operation resumes. All interrupts can be masked and flags are reset by reading the appropriate flag register. The optical output will squelch for loss of input signal unless squelch is disabled. Fault detection or channel deactivation through the TWS interface will disable the channel. Status, alarm/warning and fault information are available via the TWS interface.

The optical receiver portion of the transceiver incorporates a 4-channel PIN photodiode array, a 4-channel TIA array, a 4 channel output buffer, diagnostic monitors, and control and bias blocks. Diagnostic monitors for optical input power are implemented and results are available through the TWS interface. Alarm and warning thresholds are established for the monitored attributes. Flags are set and interrupts generated when the attributes are outside the thresholds. Flags are also set and interrupts generated for loss of optical input signal (LOS). All flags are latched and will remain set even if the condition initiating the flag clears and operation resumes. All interrupts can be masked and flags are reset upon reading the appropriate flag register. 

        Absolute Maximum Ratings

        Recommended Operating Conditions

    Optical Characteristics

Notes:   

1. Measured with a PRBS 2³¹-1 test pattern, @10.325Gb/s, BER<10^-12 .  

        Electrical Characteristics

Notes:  

1. Connected directly to TX data input pins. AC coupled thereafter.   

2. Into 100 ohms differential termination.   

        Outline Dimensions:mm

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