25G SFP28 Direct Attach Passive Copper Cables GPP-PC250

Features

▪ Data rate up to 25.78125Gbps

▪ Length up to 5m

▪ Hot-pluggable SFP+ 20PIN footprint

▪ Improved Pluggable Form-factor (IPF) compliant for enhanced EMI/EMC performance

▪ Compatible to SFP28 MSA

▪ Compatible to SFF-8402 and SFF-8432

▪ Power consumption <0.1 W

▪ Operating case temperature range 0°C to +70°C

▪ RoHS-6 compliant (lead free)

Applications

▪ High capacity I/O in Storage Area Networks, Network Attached Storage, and Storage Servers

▪ Switched fabric I/O such as ultra high bandwidth switches androuters

▪ Data center cabling infrastructure

▪ High density connections between networking equipment

Recommended Operating Conditions

Parameter	Symbol	Min	Typical	Max	Unit
Storage Ambient Temperature		-40		+85	°C
Operating Case Temperature	Tc	0		+70	°C
Power Supply Voltage	CC3	3.14	3.3	3 .47	V
Power consumption				0.1	W
Data Rate Per Lane		1		25 .78	Gb/s

High Speed Characteristics

Parameter	Symbo	Min	Typical	Ma	Unit	Note
Differential Impedance	RIN,P-P	90		110	Ώ
Insertion loss	SDD21			22.48	dB	At 12.8906 GHz
Differential Return Loss	SDD11			See 1	dB	At 0.05 to 4.1 GHz
Differential Return Loss	SDD22			See 2	dB	At 4.1 to 19 GHz
Common-mode to common-mode output return loss	SCC11	2			dB	At 0.2 to 19 GHz
Common-mode to common-mode output return loss	SCC22	2			dB	At 0.2 to 19 GHz
Differential to common-mode return loss	SCD11			See 3	dB	At 0.01 to 12.89
Differential to common-mode return loss	SCD22			See	dB	At 12.89 to 19 GHz
Differential to common Mode Conversion Loss	SCD21			10	dB	At 0.01 to 12.89
				See 5		At 12.89 to 15.7
				6.3		At 15.7 to 19 GHz
Channel Operating Margin	COM	3			dB

Notes:

1. Reflection Coefficient given by equation SDD11(dB) < 16.5 - 2 × SQRT(f ), with f in GHz

2. Reflection Coefficient given by equation SDD11(dB) < 10.66 - 14 × log10(f/5.5), with f in GHz

3. Reflection Coefficient given by equation SCD11(dB) < 22 - (20/25.78)*f, with f inGHz

4. Reflection Coefficient given by equation SCD11(dB) < 15 - (6/25.78)*f, with f in GHz

5. Reflection Coefficient given by equation SCD21(dB) < 27 - (29/22)*f, with f in GHz

Pin Descriptions

Pin	Logic	Symbol	Name/Description	Notes
1		VeeT	T ransmitter G round
2	LV-TTL-O	TX Fault	N/A	1
3	LV-TTL- I	TX DIS _	T ransmitter D isable	2
4	LV-TTL- I/O	SDA	Tow W ire Serial Data
5	LV-TTL- I	SCL	Tow W ire Serial C lock
6		MOD DEF0 _	Module present, connect to VeeT
7	LV-TTL- I	RS0	N/A	1
8	LV-TTL-O	LOS	LOS of Signal	2
9	LV-TTL- I	RS1	N/A	1
10		VeeR	Reciever G round
11		VeeR	Reciever G round
12	CML-O	RD-	Reciever Data I nverted
13	CML-O	RD+	Reciever Data Non- I nverted
14		VeeR	Reciever G round
15		VccR	Reciever Supply 3 .3V
16		VccT	T ransmitter Supply 3 .3V
17		VeeT	T ransmitter G round
18	CML- I	TD+	T ransmitter Data Non- I nverted
19	CML I _	TD-	T ransmitter Data I nverted
20		VeeT	T ransmitter G round