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MAX13448E Datasheet, PDF (10/14 Pages) Maxim Integrated Products – 80V Fault-Protected Full-Duplex RS-485 Transceiver
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±80V Fault-Protected Full-Duplex
RS-485 Transceiver
A
VID
B
0
RO
R
CL
20pF
Figure 6. Receiver Propagation Delays
B
A
VOH
RO
VOL
tRPLH
tRPHL
VOH + VOL
2
tSKEW = |tRPLH - tRPHL|
+1.5V
-1.5V
S3
A
RO
1kΩ
VID R
B
RE
CL
20pF
S1
VCC
S2
GENERATOR
50Ω
S1 OPEN
S2 CLOSED
S3 = +1.5V
VCC
RE
RE
0
tRZH, tRWAKE*
RO
VOH
VOH/2
RO
0
S1 CLOSED
S2 OPEN
S3 = -1.5V
VCC
VCC/2
0
tRZL, tSHDN*
VCC
(VOL + VCC)/2
VOL
S1 OPEN
S2 CLOSED
S3 = +1.5V
RE
VCC/2
tRHZ, tSHDN*
VCC
0
RE
S1 CLOSED
S2 OPEN
S3 = -1.5V
VCC/2
tRLZ, tSHDN*
0.25V
RO
VOH
RO
0
0.25V
Figure 7. Receiver Enable and Disable Times
10 ______________________________________________________________________________________
VCC
0
VCC
*DE =
LOW
VOL
 ▷