LMH0044SQE/NOPB National Semiconductor, LMH0044SQE/NOPB Datasheet - Page 6

• Manufacturer Part Number: LMH0044SQE/NOPB
• Description: IC ADAPTIVE CBL EQUALIZER 16-LLP
• Manufacturer: National Semiconductor

Specifications of LMH0044SQE/NOPB

• Applications: Data Transport
• Interface: Serial
• Voltage - Supply: 3.135 V ~ 3.465 V
• Package / Case: 16-LLP
• Mounting Type: Surface Mount
• Operating Temperature (min): 0C
• Operating Temperature Classification: Commercial
• Operating Temperature (max): 85C
• Package Type: LLP EP
• Rad Hardened: No
• For Use With: SD044EVK - BOARD EVALUATION LMH0044
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LMH0044SQE

Application Information
PCB LAYOUT RECOMMENDATIONS
Please refer to the following Application Note on National's
website: AN-1372, “LMH0034 PCB Layout Techniques.”
The PCB layout techniques in the application note apply to
the LMH0044 as well.
REPLACING THE GENNUM GS1574A
The LMH0044 is footprint compatible with the Gennum
GS1574A.
SUPPLY CURRENT VS. CABLE LENGTH
The supply current (I
) depends on the amount of cable be-
CC
ing equalized. The current is highest for short cable and
decreases as the cable length is increased. Figure 1 shows
supply current vs. Belden 1694A cable length for 1.485 Gbps
data and Figure 2 shows supply current vs. Belden 1694A
20177015
cable length for 270 Mbps data.
FIGURE 2. Supply Current vs. Belden 1694A Cable
Length, 270 Mbps
20177013
FIGURE 1. Supply Current vs. Belden 1694A Cable
Length, 1.485 Gbps
www.national.com
6