+3.3V, ±15kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceivers
Typical Operating Characteristics (continued)
(VCC = 3.3V, TA = +25°C, unless otherwise noted.)
DRIVER PROPAGATION DELAY (500kbps)
MAX3070E toc18
DI
2V/div
VY - VZ
2V/div
DRIVER PROPAGATION DELAY (16Mbps)
MAX3070E toc19
DI
2V/div
VZ
1V/div
VY
1V/div
RECEIVER PROPAGATION DELAY (16Mbps)
MAX3070E toc20
VA
1V/div
VB
1V/div
RO
2V/div
400ns/div
10ns/div
20ns/div
Y
VOD
Z
RL/2
RL/2
VOC
Figure 1. Driver DC Test Load
VCC
DI
0
VCC/2
tDPLH
tDPHL
Z
Y
VO
VDIFF 0
-VO
VO
1/2 VO
10%
tDR
VDIFF = V (Y) - V (Z)
90%
90%
tDF
tSKEW = | tDPLH - tDPHL |
Figure 3. Driver Propagation Delays
1/2 VO
10%
Test Circuits and Waveforms
3V
DE
Y
DI
VOD
Z
RL
CL
Figure 2. Driver Timing Test Circuit
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