Ascent Communication Technology

400G QSFP DD to 4X100G QSFP28 AOC

The 400G QSFP-DD to 4x100G QSFP28 breakout active optical cables are designed for high-speed connectivity in 400 Gigabit Ethernet links over OM3 multimode fibers. Each channel operates at data rates of up to 25.78125 Gbps using NRZ modulation, offering efficient and reliable data transfer. These cables meet key industry standards, including IEEE 802.3by, IEEE 802.3db, QSFP-DD MSA, QSFP-DD-CMIS, SFF-8636, ensuring broad compatibility and robust performance across diverse networking systems. Engineered with a slim and lightweight form factor, these breakout cables streamline cable management in high-density environments. Their design supports enhanced system airflow, a critical factor in maintaining efficient cooling and consistent performance in data centers and server racks. This makes them a practical choice for space-constrained installations and demanding network setups. Favored in cloud and enterprise data centers, these cables provide a cost-efficient and dependable solution for high-speed interconnects. Their combination of affordability, reliability, and compliance with advanced networking standards makes them a top choice for applications that require scalable and high-performance infrastructure.

· Compliant QSFP-DD and QSFP28 MSA

· Compliant with IEEE 802.3db and100G Lambda MSA

· Low latency for high performance computing application

· Available in standard length of 3, 5, 7, 10,15, 20, 25, 30m

· Operating case temperature 0 to 70°C

· Hot pluggable QSFP-DD and QSFP28 form factor

· Power consumption<7.5W per end with QSFPDD

· Power consumption<3.5W per end with QSFP28

· Laser Eye Safety Class 1

· Management interface based on CMIS

· 4.0 and SFP-8636

· RoHS compliant

Absolute Maximum Ratings

Parameter	Symbol	Min	Typ.	Max	Unit	Ref.
Storage Temperature	Ts	-40	-	85	°C
Operating Humidity	RH	5	-	85	%
Maximum Supply Voltage	Vcc	-0.5	-	3.6	V

Operating Enviornment

Parameter	Symbol	Min	Typ.	Max	Unit	Note
Supply Voltage	Vcc	3.135	3.3	3.465	V
Case Temperature	Tc	0		70	°C
Bit Rate as QSFP-DD end (per ch)	BR		53.125		Gbps
Bit Rate as QSFP28 end (per ch)	BR		106.25		Gbps
Total power consumption (QSFP-DD)	Pc		7.5	10	W
Total power consumption (QSFP28)	Pc		3.5	4	W

Electrical Characteristics for QSFP-DD end

Parameter	Min	Typ.	Max	Unit	Remarks
Transmitter
Signaling Rate per Lane	-100 ppm	26.5625	+100 ppm	GBd
Differential Peak-to-Peak Input Voltage tolerance	900			mV
Differential Termination Mismatch			10	%
Single-ended Voltage Tolerance Range	-0.4	-	3.3	V
DC common mode voltage	-350		2850	mV
Receiver
Signaling Speed per Lane	-100 ppm	26.5625	+100 ppm	GBd
AC Common-Mode Output Voltage RMS			17.5	mV
Differential Peak-to-Peak Output Voltage			900	mV
Near-End Eye Symmetry Mask Width(ESMW) (ESMW)		0.2		uI
Near-End Eye Height, Differential	70			mV
Far-End Eye Symmetry Mask Width (ESMW)		0.2		uI
Far-End Eye Height, Differential	30			mV
Far-End Pre-Cursor ISI Ratio	-4.5		2.5	%
Differential Termination Mismatch			10	%
Transition Time, 20 to 80%	9.5			ps
DC Common Mode Voltage	-350		2850	mV

Electrical Characteristics for QSFP-28 end

Parameter	Min	Typ.	Max	Unit	Remarks
Transmitter (each lane)
Signaling Rate per Lane		25.78125		Gb/s
Differential Pk-Pk Input Voltage Tolerance (min)	900	-	-	mV	at TP1a
Differential Termination Mismatch	-	-	10	%	at TP1
Single-Ended Input Voltage Tolerance Range	-0.4 to 3.3	-	-	V	at TP1a
DC Common Mode Voltage	-350	-	2850	mV	at TP1
Receiver (each lane, at TP4)
AC Common-Mode Output Voltage (RMS)	-	-	17.5	mV
Differential Output Voltage	-	-	900	mV
Eye Width	0.57	-	-	UI
Eye Height, Differential	228	-	-	mV
Vertical Eye Closure	-	-	5.5	dB
Differential Termination Mismatch	-	-	10	%
Transition Time (20% to 80%)	12	-	-	ps
DC Common Mode Voltage	-350	-	2850	mV

Digital Diagnostic Specification

Parameter	Symbol	Min	Typ.	Max	Unit	Remark
Transceiver Case Temperature	DMI_Temp	-3		+3	°C	Over operating temp
Supply Voltage Monitor Absolute Error	DMI _VCC	-3%		+3%	V	Full operating range
Channel RX Power MonitorAbsolute error	DMI_RX	-3		+3	dB	Per channel
Channel Bias Current Monitor	DMI_Ibias	-10%		+10%	mA	Per channel
Channel TX Power Monitor Absolute Error	DMI_TX	-3		+3	dB	Per channel