Datasheet

MAX3301E/MAX3302E
USB On-the-Go Transceivers and Charge Pumps
______________________________________________________________________________________ 11
Test Circuits and Timing Diagrams (continued)
90%
10%
V
OH
V
OL
t
R
t
F
Figure 5. Rise and Fall Times
t
PLH
D+
D-
V
CRS_F
, V
CRS_L
V
OLD
V
OHD
V
CRS_F
, V
CRS_L
DAT_VP
SE0_VM
t
PHL
Figure 6. Timing of DAT_VP, SE0_VM to D+, D- in VP_VM
Mode (dat_se0 = 0)
t
PLH
D+
D-
V
CRS_F
, V
CRS_L
V
OLD
V
OHD
V
CRS_F
, V
CRS_L
DAT_VP
SE0_VM
t
PHL
Figure 7. Timing of DAT_VP, SE0_VM to D+/D- in DAT_SE0
Mode (dat_se0 = 1)
t
PDZ
D+ OR D-
V
OL
V
OLD
+ 0.3V
V
OHD
- 0.3V
V
OH
V
L
V
L
/ 2 V
L
/ 2
0V
t
PZD
OE/INT
Figure 8. Enable and Disable Timing
t
PHL
t
PHL
t
PLH
D+
D-
RCV
DAT_VP
SE0_VM
3V
0V
V
L
V
L
V
L
V
L
/ 2
V
L
/ 2
V
L
/ 2
0V
0V
0V
t
PLH
t
PLH
t
PHL
D+/D- RISE/FALL TIMES ≤ 8ns, V
L
= 1.8V, 2.5V, OR 3.3V
Figure 9. D+/D- to RCV, DAT_VP, SE0_VM Propagation Delays
(VP_VM Mode)
t
PHL
D+
D-
DAT_VP
SE0_VM
3V
0V
V
L
V
L
/ 2
0V
t
PLH
D+/D- RISE/FALL TIMES ≤ 8ns, V
L
= 1.8V, 2.5V, OR 3.3V
Figure 10. D+/D- to DAT_VP, SE0_VM Propagation Delays
(DAT_SE0 Mode)
DUT
TEST POINT
C
L
RCV, VP, VM,
DAT_VP,
SEO_VM
LOAD FOR
1) D+/D- TO RCV/VP/VM/DAT_VP/SEO_VM PROPAGATION DELAYS
2) RCV/VP/VM/DAT_VP/SEO_VM RISE/FALL TIMES (C
L
= 15pF)
Figure 3. Load for Receiver Propagation Delay and Receiver
Rise/Fall Times
DUT
270Ω
TEST POINT
V = 2/3 x V
L
DAT_VP
SEO_VM
Figure 4. Load for DAT_VP, SE0_VM Enable/Disable Time
Measurements