USB1T20(2008) View Datasheet(PDF) - Fairchild Semiconductor
Part Name
Description
Manufacturer
USB1T20 Datasheet PDF : 9 Pages
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AC Loadings and Waveforms
VOL and VOH are the typical output voltage drops that occur with the output load. VCC never goes below 3.0V.
Figure 3. Rise and Fall Times
Figure 4. VPO, VMO/FSEO to D+/D-
Figure 5. D+/D- to RCV, VP/VM
Test Circuits and Waveforms
Figure 6. /OE to D+/D-
Figure 7. Load for VM/VP and RCV
Figure 8. Load for Enable and Disable Times
Test
S1
D-/LS Close
D+/LS Open
CL=50pF, Full Speed
CL=200pF, Low Speed (Minimum Timing)
CL=600pF, Low Speed (Maximum Timing)
1.5kΩ on D- (Low Speed) or D+ (Full Speed) only
D-/FS
D+/FS
Open
Close
Figure 9. Load for D+/D-
© 2004 Fairchild Semiconductor Corporation
USB1T20 • Rev. 1.0.2
7
www.fairchildsemi.com
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