MAX14978 Datasheet, PDF (7/15 Pages) Maxim Integrated Products – SuperSpeed USB Passive Switch (Low/Full/Hi/SuperSpeed)

SuperSpeed USB Passive Switch
(Low/Full/Hi/SuperSpeed)
Test Circuits/Timing Diagrams (continued)
V_DD V_CC
0.1µF
0.1µF
VDD VCC
NO_+ OR
MAX14978
RS
NC_+
COM_+
IN+
NO_- OR
RS
NC_-
IN-
COM_-
SEL_
+1.5V
V_IN+
0V
+1.5V
VIN-
0V
+1.5V
VOUT+
0V
+1.5V
VOUT-
0V
t_PLHX
tPHLY
50%
50%
50%
50%
50%
50%
tPHLX
50%
50%
tPLHY
OUT+ _{RISE-TIME PROPAGATION DELAY = tPLHX OR tPLHY}
FALL-TIME PROPAGATION DELAY = tPHLX OR tPHLY
R_L
tSK1 = DIFFERENCE IN PROPAGATION DELAY (RISE-FALL)
BETWEEN ANY TWO PAIRS
OUT- ^{tSK2 = | tPLHX - tPHLY | OR | tPHLX - tPLHY |}
BETWEEN TWO LINES ON THE SAME PAIR
RL
tINRISE
90%
10%
tINFALL
90%
10%
tOUTRISE
90%
10%
tOUTFALL
90%
10%
Figure 3. Propagation Delay, Output Skew
7