MIC2550 Datasheet, PDF (5/8 Pages) Micrel Semiconductor – Universal Serial Bus Transceiver Advance Information

MIC2550
Symbol
Parameter
Transceiver Timing
t_PVZ
OE# to RCVR Tristate Delay
t_PZD
Receiver Tristate to Transmit Delay
t_PDZ
OE# to DRVR Tristate Delay
t_PZV
Driver Tri-state to Receiver Delay
t_PLH
V+/V– to D+/D– Propagation Delay
t_PHL
V+/V– to D+/D– Propagation Delay
t_PLH
D+/D– to RCV Propagation Delay
t_PHL
D+/D– to RCV Propagation Delay
t_PLH
D+/D– to V+/D– Propagation Delay
t_PHL
D+/D– to V+/D– Propagation Delay
Condition
Figure 1
Figure 1
Figure 1
Figure 1
Figure 4
Figure 4
Figure 3
Figure 3
Figure 3
Figure 3
Micrel
Min Typ Max Units
15
ns
15
ns
15
ns
15
ns
15
ns
15
ns
15
ns
15
ns
8
ns
8
ns
H
V_OE#
L
V_P
V_P/V_M
V_M
V_D+
V_D+/V_D–
V_D–
t_PVZ
t_PZD
t_PZV
Figure 1. Enable and Disable Times
V_D+
Differential 90%
Data
Lines ^10%
V_D–
V_CRS
t_R
t_F
Figure 2. Rise and Fall Times
Differential ^VD+
Data
Lines _VD–
t_PLH
t_PHL
V_OH
Output _VOL
V_SS
Figure 3. Receiver Propagaion Delay D+/D– to RCV, V_P, and V_M
V_OI
Input _VOL
V_SS
t_PLH
t_PHL
Differential ^VD+
Data
Lines _VD–
Figure 4. Driver Propagation Delay V_P and V_M to D+/D–
October 4, 1999
5
MIC2550