XR33152_17 Datasheet, PDF (13/21 Pages) Exar Corporation – 60V Fault Tolerant 3.0V to 5.5V RS-485/RS-422 Transceivers

Applications Information (Continued)
XR33152/XR33155/XR33156/XR33158
DI = OV or V_CC D
DE = OV or V_CC
Z
I_OSD
Y -60V to 60V _V
Figure 5. Driver Output Short Circuit Current
DEVICE POWERED
ON/OFF
TRANSCEIVER,
GENERATOR,
RECEIVER
A OR Z
100Ω±1%
B OR Y
VTEST
15 μs DURATION
1% DUTY CYCLE
Figure 6. Transient Overvoltage Test Circuit
DI ^3V
OV
Z
V_OD
(V_Y - V_Z)
Y
V_OD+
OV
V_OD–
1.5V
t_DPLH
1.5V
V_OD
t_SKEW = t_DPLH – t_DPHL
t_DPHL
10%
90%
t_DR
90%
10%
t_DF
DI
D
V_OD R_L
Z
C_L
Y
DE = V_CC
Figure 7. Driver Propagation Delay Test Circuit and Timing Diagram
REV2B
12/19