MIC2550YTS Micrel Inc, MIC2550YTS Datasheet - Page 9

• Manufacturer Part Number: MIC2550YTS
• Description: IC,LINE TRANSCEIVER,CMOS,1 DRIVER,1 RCVR,TSSOP,14PIN,PLASTIC
• Manufacturer: Micrel Inc
• Type: Transceiverr

Specifications of MIC2550YTS

• Rohs Compliant: YES
• Number Of Drivers/receivers: 1/1
• Protocol: USB 2.0
• Voltage - Supply: 4 V ~ 5.25 V
• Mounting Type: Surface Mount
• Package / Case: 14-TSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PCB Layout Recommendations
Although the USB standard and applications are not based in
an impedance controlled environment, a properly designed
PCB layout is recommended for optimal transceiver perfor-
mance. The suggested PCB layout hints are as follows:
March 2005
MIC2550
• Match signal line traces (VP/VM, D+, D–) to
• For every signal line trace width (w), separate
• Maintain the same number of vias on each
• Control signal line impedances to ±10%.
• Keep R
40ps, approximately
PCB material propagation is about 150ps/inch,
so to minimize skew try to keep VP/VM, D+/D–
traces as short as possible.
the signal lines by 1.5–2 widths. Place all other
traces at >2 widths from all signal line traces.
differential trace, keeping traces approximately
at same separation distance along the line.
equal distance between R
D+ and D–.
S
as close to the IC as possible, with
1
/
3
inch if possible. FR-4
S
and the IC for both
9
M9999-031805
Micrel, Inc.