100G QSFP28 TO 4xSFP28 Active Optical Cables specification

Description

100G QSFP28 to 4xSFP28 active optical cable is a high-performance, low-power, long-distance interconnection solution that supports100G.

100G QSFP to 4xSFP28 is a combination of 4 full-duplex channels, each of which can transmit data at a rate of up to 25.78125GB/s, providing an aggregation rate of 100GB/s.

100G QSFP to 4xSFP28 active optical cable (AOC) can be used as an alternative to QSFP28 passive and active copper cables.

Features

Support 4x25GBASE-SR application
Compliant to QSFP28 MSA SFF-8636 and SFP28 MSA SFF-8431 and SF-8472
Multi rate of up to 25.78125Gbps per lane
+3.3V single power supply
Low power consumption
UL certification cables (optional)
Operating case temp Commercial: 0°C to +70 °C
RoHS compliant

Applictions

100GBASE-SR4 at 25.78125Gbps per lane
InfiniBand QDR, EDR
Other optical link

Cable Length

Parameter	Value	Units
Diameter	3	mm
Minimum bend radius	30	mm
Length tolerance	Length < 1 m: +5 /-0	cm
	1 m ≤length ≤ 4.5 m: +15 / -0	cm
	5 m ≤length ≤ 14.5 m: +30 / -0	cm
	Length≥15.0 m +2% / -0	m
Cable color	Orange(OM2),Aqua(OM3),Megenta(OM4)

Breakout Cable Nominal Length

Total Length X (Unit: m)	Breakout Point Measured from QSFP LQ (Unit: m)	Breakout Point Measured from SFP LS(Unit: m)
1	0.3	0.7
2	0.6	1.4
3	1	2
5	2	3
7	4	3
10	7	3
15	12	3
20	17	3
25	22	3
30	27	3
40	37	3
50	47	3

Pin Function Definitions

Pin	Symbol	Name/Description	Notes
1	VEET	Module Transmitter Ground	1
2	TX_FAULT	Module Transmitter Fault	2
3	TX_DISABLE	Transmitter Disable; Turns off transmitter laser output	3
4	SDA	2-Wire Serial Interface Data Line (MOD-DEF2)
5	SCL	2-Wire Serial Interface Clock (MOD-DEF1)
6	MOD_ABS	Module Absent, connected to V_EET or V_EER in the module	2
7	RS0	Rate Select 0, optionally controls SFP+ module receiver
8	RX_LOS	Receiver Loss of Signal Indication (In FC designated as Rx_LOS and in Ethernet designated as NOT Signal Detect)	2
9	RS1	Rate Select 1, optionally controls SFP+ module transmitter
10	V_EER	Module Receiver Ground	1
11	V_EER	Module Receiver Ground	1
12	RD-	Receiver Inverted Data Output
13	RD+	Receiver Non-Inverted Data Output
14	V_EER	Module Receiver Ground	1
15	V_CCR	Module Receiver 3.3 V Supply
16	V_CCT	Module Transmitter 3.3 V Supply
17	V_EET	Module Transmitter Ground	1
18	TD+	Transmitter Non-Inverted Data Input
19	TD-	Transmitter Inverted Data Input
20	V_EET	Module Transmitter Ground	1

Note:

The module ground pins are isolated from the module
The pins shall be pulled up with 4.7K-10Kohms to a voltage between 3.14V and 3.46V on host
The pin is pulled up to VCCT with a 4.7K-10KΩ resistor in the

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 per QSFP28	Pd	-	-	2.5	W
Power Dissipation per SFP28	Pd	-	-	1.0	W	1
Bit Rate Bit Rate per Lane	BR	10.3125	25.78125	-	Gbps	Per lane

Note: 1 Per terminal

Absolute Maximum Ratings

Parameter	Symbol	Min.	Typical	Max.	Unit	Notes
Supply Voltage	Vcc₃	-0.5	-	+3.6	V
Storage Temperature	T_s	-5	-	+75	°C
Operating Humidity	RH	+5	-	+85	%	1

Note: 1 No condensation

Electrical Characteristics

Electrical Characteristics for QSFP28

Parameter		Symbol	Min.	Typ.	Max.	Units	Notes
Transmitter
Differential Data Input Swing		Vout	200	-	1000	mV
Input Differential Impedance		Z_D	90	100	110	Ω
ModSelL	Module Select	VOL	V_EE-0.3	-	0.4	V
ModSelL	Module Unselect	VOH	2.0	-	V_CC+0.3	V
LPMode	Low Power Mode	VIL	V_EE-0.3	-	0.8	V
LPMode	Normal Operation	VIH	2.0	-	V_CC+0.3	V
ResetL	Reset	VIL	V_EE-0.3	-	0.8	V
ResetL	Normal Operation	VIH	2.0	-	V_CC+0.3	V
Receiver
Differential Data Output Swing		Vin,P-P	200	-	1000	mV_PP
Output Differential Impedance		Z_D	90	100	110	Ω
ModPrsL	Normal Operation	VOL	V_EE-0.3	-	0.4	V
IntL	Interrupt	VOL	V_EE-0.3	-	0.4	V
IntL	Normal Operation	VoH	2.0	-	V_CC+0.3	V
Bit Error Rate		BER			E-12		1

Electrical Characteristics for SFP28

Parameter		Symbol		Min.	Typ.	Max.	Units		Notes
Electrical Transmitter Characteristics
Differential Data Input Swing		Vin,P-P		200	-	1000		mV_PP
Input Differential Impedance		ZIN		90	100	110		Ω
Tx_Fault	Normal Operation	VOL		V_EE-0.3	-	0.4		V
	Transmitter Fault	VOH		2.0	-	V_CC+0.3		V
Tx_Disable	Normal Operation	VIL		V_EE-0.3	-	0.8		V
	Laser Disable	VIH		2.0	-	V_CC+0.3		V
Electrical Receiver Characteristics
Differential Date Output			Vout	200	-	1000	mV
Output Differential Impedance			Z_D	90	100	110	Ω
Rx_LOS	Normal Operation		VOL	V_EE-0.3	-	0.4	V
	Lose Signal		VoH	2.0	-	V_CC+0.3	V
Bit Error Rate			BER	-	-	E-12	-