Rainbow Electronics MAX13486E - Manual (Page 8)

MAX13485E/MAX13486E
Half-Duplex RS-485/RS-422 Transceivers in µDFN
8 _______________________________________________________________________________________
V OC
A
B
R DIFF
2
R
DIFF
V OD C L
2
Figure 1. Driver DC Test Load
A
B
DE
DI
5V
R
DIFF C L
V ID
Figure 2. Driver Timing Test Circuit
1.5V 1.5V
0
DI
B
A
t
DPLH
t DPHL
1/2 V O
1/2 V O
V O
10%
90%
10%
90%
0
V
O
-V O
V DIFF
t DSKEW = |t DPLH - t DPHL |
V DIFF = V(A) - V(B)
t HL t LH
V CC
f = 1MHz, t LH
≤ 3ns, t
HL
≤ 3ns
Figure 3. Driver Propagation Delays
Test Circuits and Waveforms