Direct Attach Cables

40G QSFP+ Direct Attach Cable

Features

l Compliant with SFF- 8436.

l Up to 10.3125Gbps data rate per channel

l Up to 7m transmission

l Operating temperature: -40℃ to +80℃

l Single 3.3V power supply

l RoHS compliant

Benefits

l Cost-effective copper solution

l Lowest total system power solution

l Lowest total system EMI solution

l Optimized design for Signal Integrity

General Product Characteristics

High Speed Characteristics

Parameter	Symbol	Min.	Typ	Max.	Unit	Notes
Differential Impedance	Zd	90	100	110	Ω
Differential Input Return Loss	SDDXX	<-12+2* SQRT (f) with f in GHz			dB	0.01~4.1GHz
Differential Input Return Loss	SDDXX	<-6.3+13*Log10/(f/5.5) with f in GHz			dB	4.1~11.1GHz
Common Mode Output Return Loss	SCCXX	< -7+1.6*f with f in GHz			dB	0.01~2.5GHz
Common Mode Output Return Loss	SCCXX			-3	dB	2.5~11.1GHz
Difference Waveform Distortion Penalty	dWDPc			6.75	dB
VMA Loss	L			4.4	dB
VMA Loss to Crosstalk Ratio	VCR	32.5			dB