SP3490CN SIPEX [Sipex Corporation], SP3490CN Datasheet - Page 4

• Manufacturer Part Number: SP3490CN
• Description: +3.3V Low Power Full Duplex RS-485 Transceivers with 10Mbps Data Rate
• Manufacturer: SIPEX [Sipex Corporation]

Figure 7. Receiver Enable and Disable Timing Circuit
Figure 9. Driver Differential Output Delay and
Transition Time Waveforms
Figure 11. Receiver Propagation Delay Waveforms
Rev. 10/11/02
OUTPUT
OUT
IN
-1.5V
1.5V
INPUT
t
GENERATOR
S3
R
(NOTE 1)
10%
50%
V
3V
0V
0V
t
DPLH
CC
1.5V
V
ID
50Ω
R
90%
1.5V
t
V
RPLH
OM
1.5V
C
(NOTE 2)
= V
L =
15pF
V
90%
2
OM
SP3490/3491 Low Power Full-Duplex RS485 Transceivers
1k
CC
t
DPHL
50%
10%
1.5V
t
RPHL
t
F
S1
S2
V
OM
0V
3V
2.0V
-2.0V
V
CC
4
Figure 8. Driver Propagation Delay Waveforms
Figure 10. Driver Enable and Disable Timing Waveforms
OUTPUT
OUTPUT
Y OUTPUT
Z OUTPUT
HIGH
LOW
DE
INPUT
V
V
V
V
V
0V
0V
V
V
3V
3V
0V
OH
CC
OL
OH
OH
OL
OL
V
V
OM
OM
= V
= V
1.5V
1.5V
t
t
t
PZH
t
PZL
PHL
PLH
OH
OH
© Copyright 2002 Sipex Corporation
2
+ V
2
+ V
V
V
V
V
OM
OM
OM
OM
OL
OL
≈ 1.5V
≈ 1.5V
t
1.5V
t
1.5V
PHZ
PLZ
t
t
PLH
PHL
V
V
0.25V
0.25V
OM
OM