3.3V-Powered, 10Mbps and Slew-Rate-Limited
True RS-485/RS-422 Transceivers
D
VCC
RL
2
VOD
RL
2
VOC
Figure 4. Driver VOD and VOC
375Ω
D
VCC
VOD
RL
VCM =
-7V to +12V
375Ω
Figure 5. Driver VOD with Varying Common-Mode Voltage
VID
R
0V
VOL
IOL
VOH
IOH
(+)
(-)
Figure 6. Receiver VOH and VOL
CL
D
GENERATOR
(NOTE 4)
50Ω
VCC
CL
RL = OUT
60Ω
CL = 15pF (NOTE 5)
IN
1.5V
tDO
90%
OUT
50%
10%
tTD
1.5V
tDO
90%
50%
10%
tTD
3V
0V
≈ 2.0V
≈ -2.0V
Figure 7. Driver Differential Output Delay and Transition Times
8 _______________________________________________________________________________________