FSUSB30_12 Datasheet, PDF (8/18 Pages) Fairchild Semiconductor – Low-Power, Two-Port, High-Speed USB 2.0 (480Mbps) Switch

V_O
Control
Input
V_CC
V_CC
HSDn
HSDn
D+, D–
S
GND
V_OUT
R_L
C_L*
V_CC
Control
Input _0V
V_OUT
50%
t_R = t_F = 2.5ns (10–90%)
0.9 x V_OUT
*C_L includes test fixture and stray capacitance.
t_RISE = 500ps
800mV
Input: HSDn+
HSDn–
400mV
10%
90%
50%
Figure 10. Break-Before-Make (t_BBM)
t_FALL = 500ps
90%
50%
10%
t_RISE = 500ps
800mV
Input: D+, D–
400mV
10%
V_OH
Output1: HSD1+
HSD1–
V_OL
t_D
t_FALL = 500ps
90%
50%
90%
50%
10%
50%
t_PLH1
50%
t_PHL1
V_OH
Output: D+, D–
V_OL
50%
t_PLH
T_SK(P) = | t_PHL – t_PLH |
Pulse Skew, T_SK(P)
50%
t_PHL
V_OH
Output1: D2+, D2–
V_OL
50%
t_PLH2
50%
t_PHL2
T_SK(O) = | t_PLH1 – t_PLH2 | or | t_PHL1 – t_PHL2 |
Output Skew, T_SK(OUT)
Figure 11. Switch Skew Tests
VSel
FSUSB30
GND
Network Analyzer
R_S
V_IN
V_S
GND
GND
GND
R_S and R_T are functions of the application environment
(See AC Electrical Tables for specific values).
R_T
GND
V_OUT
Figure 12. Bandwidth
© 2006 Fairchild Semiconductor Corporation
FSUSB30 Rev. 1.1.6
8
www.fairchildsemi.com