Rainbow Electronics W90N740 - Manual (Page 203)

W90N740
Publication Release Date: November 26, 2004
- 199 - Revision A4
8.3.4 USB Transceiver AC Characteristics
Low Speed: 75ns at C L = 50pF, 300ns at C L = 350pF Full Speed: 4 to 20ns at C L = 50pF
Differential
Data Lines
10%
Rise Time
90%
Fall Time
t
F
t
R
10%
90%
C L
C L
Data Signal Rise and Fall Time
USB Transceiver AC Characteristics
SYM. DESCRIPTION CONDITIONS MIN. MAX. UNIT
T
R
Rise Time (Full Speed) CL = 50 pF 4 20 nS
T
F
Fall Time (Full Speed CL = 50 pF 4 20 nS
T
RFM
Rise/Fall Time Matching (Full Speed) 90 112 %
T
DRATE
Full Speed Data Rate
Average bit rate
(12 Mb/s ±0.25%)
11.97 12.03 Mbps