STV-674 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'STV-674' PDF : 35 Pages View PDF
Detailed Specifications
4.5 USB interface
STV0674
4.5.1 AC electrical characteristics of USB transceiver
All measurements are fully electrically compliant to Chapter 7 (Electrical requirements) of revision 2
of the USB specification for full-speed devices (V1.1). The transceiver has been tested with external
impedance-matching series resistors (27 Ω +/-5%) between the pads and the USB cable.
Table 4: AC characteristics of USB transceiver
Parameter
Description
TRANSMIT /OUTPUT STAGE
tlr
fall time
tlf
rise time
tlrfm
rise and fall time matching
SYSTEM
Rpu
USB differential pad Dp,
Dn pullup Resistor
Rpd
USB differential pad Dp,
Dn pulldown Resistor
Min
4.45
4.55
90
1.425
14.25
Typ.
5.82
5.77
Max
Units
7.31
ns
6.81
ns
111
%
1.575
kΩ
15.75
kΩ
20/35
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