SP490 Ver la hoja de datos (PDF) - Signal Processing Technologies
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SP490 Datasheet PDF : 12 Pages
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+3V
DI
0V
B
DRIVER
OUTPUT A
DIFFERENTIAL VO+
OUTPUT 0V
VA – VB VO–
tSKEW = | tDPLH - tDPHL |
f = 1MHz; tR < 10ns; tF < 10ns
1.5V
tPLH
tPHL
VO 1/2VO
tDPLH
tDPHL
tR
1.5V
1/2VO
tF
Figure 6. Driver Propagation Delays
+3V
DE
0V
5V
A, B
VOL
VOH
A, B
0V
f = 1MHz; tR < 10ns; tF < 10ns
1.5V
tZL
2.3V Output normally LOW
2.3V Output normally HIGH
tZH
1.5V
tLZ
0.5V
0.5V
tHZ
Figure 7. Driver Enable and Disable Times
V0D2+
A–B
V0D2–
VOH
R
VOL
tPHL
tSKEW = | tPHL - tPLH |
0V
INPUT
1.5V
OUTPUT
tPLH
f = 1MHz; tR < 10ns; tF < 10ns
Figure 8. Receiver Propagation Delays
0V
1.5V
Date: 02/24/05
SP490/491 Full Duplex RS-485 Transceivers
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© Copyright 2005 Sipex Corporation
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