MAX14945 Datasheet, PDF (7/21 Pages) Maxim Integrated Products – 2.75kVRMS Isolated 500kbps Half-Duplex RS-485

MAX14945
2.75kV_RMS Isolated 500kbps Half-Duplex RS-485/
RS-422 Transceiver with ±30kV ESD Protection
A
RL
2
VOD
RL
VOC
2
B
(a)
Figure 1. Driver DC Test Load
375Ω
A
VOD
60Ω
B
375Ω
(b)
+
-
VCM
TXD
A
VOD
B
RL
CL
GNDA
Figure 2. Driver Timing Test Circuit
tLH P 3ns, tHL P 3ns
TXD
50%
50%
B
A
VO
1/2 VO
VDIFF
20%
tLH
Figure 3. Driver Propagation Delays
tDPLH
tDPHL
V_DIFF = V_A - V_B
80%
80%
tHL
tDSKEW = |tDPLH - tDPHL|
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VDDA
1/2 VO
GNDA
VO
0
20%
-VO
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