40G SR4 850nm QSFP+ Optical Transceiver

The 40G SR4 (Short Range 4) QSFP+ optical module is a kind of fiber-optic communication module used for high-speed data transmission over short distances, mainly used in data centers, high-performance computing (HPC) and storage area networks (SAN) and other scenarios.

Specification

Resources

Features

RoHS 6/6 compliant

+3.3V single power supply

Low power consumption

Multi rate of up to 10.3125Gbps

Support 40GBASE-SR4/QDR application

Compliant to QSFP+ Electrical MSA SFF-8436

Transmission distance up to 150m (OM3) and 300m (OM3) optional

Operating case temp Commercial: 0°C to +70 °C

Applications

InfiniBand QDR

Other optical links

40GBASE-SR4 at 10.3125Gbps per lane

Absolute Maximum Ratings

Table 1- Absolute Maximum Ratings

Parameter	Symbol	Min.	Typical	Max.	Unit	Notes
Supply Voltage	Vcc₃	-0.5	-	+3.6	V
Storage Temperature	T_s	-10	-	+85	°C
Operating Humidity	RH	+5	-	+85	%	1
Receiver Damage Threshold per Lane	PIND	+3.4	-	-	dBm

Note: 1 No condensation

Recommended Operating Conditions

Table 2- Recommended operating Conditions

Parameter	Symbol	Min.	Typical	Max.	Unit	Notes
Operating Case Temperature	T_C	0	-	+70	°C
Power Supply Voltage	Vcc	3.14	3.3	3.47	V
Power Dissipation	Pd	-	-	1.5	W
Bit Rate	BR	1.25	10.3125	-	Gbps

Electrical Characteristics

Table 3- Electrical Characteristics

Parameter	Symbol		Min.	Typ.	Max.	Units	Notes
Input Logic Level High	VIH		2.5	-	V_CC+0.3	V
Input Logic Level Low	VIL		0	-	0.8	V
Output Logic Level High	VOH		2.4	-	VCC	V
Output Logic Level Low	VOL		0	-	0.4	V
Transmitter
Differential Data Input Swing	Vin,P-P		200	-	1600	mV_PP
Input Differential Impedance	ZIN		80	100	120	Ω
Receiver
Differential Date Output Swing		Vout	350	-	1000	mV
Output Differential Impedance		Z_D	80	100	120	Ω

Optical Characteristics

Table 4-Optical Characteristics

Parameter	Symbol	Unit	Min	Typ	Max	Notes
Optical transmitter Characteristics
Bit Rate	BR	Gbps	1.25	10.3125	-
Center Wavelength Range	λc	nm	830	850	870
RMS Spectral Width	Δλ	nm	-	-	0.65
Average Launch power Tx_off	Poff	dBm	-	-	-30
Launch Optical Power	P₀	dBm	-7.5		2	1
Extinction Ratio	ER	dB	3	-	-
Optical Receiver Characteristics
Bit Rate	BR	Gbps	1.25	10.3125	-
Sensitivity@BER=E-12	BER	dBm	-	-	-10.3
Overload Input Optical Power	PIN	dBm	2.5	-	-	2
Center Wavelength Range	λc	nm	820	-	880
LOS Assert	-	dBm	-30	-	-
LOS De-Assert	-	dBm	-	-	-12
LOS Hysteresis	-	dB	0.5	-	-

Note:

1. Coupled into 50/125 MMF.

2. Measured with PRBS 2³¹-1 test pattern @10.3125Gbps.BER=E-12

Table 5-Pin Function Definitions

Pin	Symbol	Name/Description	Notes
1	GND	Ground	1
2	Tx2n	Transmitter Inverted Data Input
3	Tx2p	Transmitter Non-Inverted Data Input
4	GND	Ground	1
5	Tx4n	Transmitter Inverted Data Input
6	Tx4p	Transmitter Non-Inverted Data Input
7	GND	Ground	1
8	ModSelL	Module Select
9	ResetL	Module Reset
10	Vcc Rx	+3.3V Power Supply Receiver
11	SCL	2-wire serial interface clock
12	SDA	2-wire serial interface data
13	GND	Ground	1
14	Rx3p	Receiver Non-Inverted Data Output
15	Rx3n	Receiver Inverted Data Output
16	GND	Ground	1
17	Rx1p	Receiver Non-Inverted Data Output
18	Rx1n	Receiver Inverted Data Output
19	GND	Ground	1
20	GND	Ground	1
21	Rx2n	Receiver Inverted Data Output
22	Rx2p	Receiver Non-Inverted Data Output
23	GND	Ground	1
24	Rx4n	Receiver Inverted Data Output
25	Rx4p	Receiver Non-Inverted Data Output
26	GND	Ground	1
27	ModPrsL	Module Present
28	IntL	Interrupt
29	Vcc Tx	+3.3V Power supply transmitter
30	Vcc1	+3.3V Power supply
31	LPMode	Low Power Mode
32	GND	Ground	1
33	Tx3p	Transmitter Non-Inverted Data Input
34	Tx3n	Transmitter Inverted Data Input
35	GND	Ground	1
36	Tx1p	Transmitter Non-Inverted Data Input
37	Tx1n	Transmitter Inverted Data Input
38	GND	Ground	1

Note: 1. Circuit ground is internally isolated from chassis ground.

Order Information

Part No.

Bit Rate (Gbps)

Laser (nm)

Distance ^note1

Fiber Type

DDMI

Connector

Tempnote2

HC-QP-M85M-01D

41.25

850

1~300m

MMF

YES

MPO 1x12

0℃~+70℃

Note:

1. OM3 fiber, 150m and 300m optional

2. Case Temperature

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Resources

40G SR4 850nm QSFP+ Optical Transceiver