SP483ECP-L データシートの表示（PDF） - Exar Corporation
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SP483ECP-L Datasheet PDF : 12 Pages
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INPUTS
OUTPUTS
LINE
RE DE DI CONDITION A B
X
1
1
No Fault
1
0
X
1
0
No Fault
0
1
X
0
X
X
ZZ
X
1
X
Fault
ZZ
Table 1. Transmit Function Truth Table
Function Truth Tables
INPUTS
RE DE
00
00
00
10
A-B
+0.2V
-0.2V
Inputs Open
X
OUTPUTS
R
1
0
1
Z
Table 2. Receive Function Truth Table
+3V
DE
0V
5V
A, B
VOL
VOH
A, B
0V
SWITCHING WAVEFORMS
f = 100kHz; tR < 10ns; tF < 10ns
1.5V
t ZL
1.5V
t LZ
2.3V
Output normally LOW
0.5V
2.3V
t ZH
Output normally HIGH
0.5V
t HZ
Figure 6. Driver Enable and Disable Times
VOD2+
A– B
VOD2–
VOH
R
VOL
tPHL
f = 100kHz; tR ≤10ns ; t F ≤ 10ns
0V
INPUT
1.5V
OUTPUT
tPLH
0V
1.5V
t SKEW = | t PHL- t PLH |
Figure 7. Receiver Propagation Delays
+3V
RE
0V
5V
R
VIL
VIH
R
0V
f = 100kHz; tR ≤ 10ns; tF ≤ 10ns
1.5V
t ZL
1.5V
Output normally LOW
1.5V
t ZH
Output normally HIGH
1.5V
t LZ
0.5V
0.5V
t HZ
Figure 8. Receiver Enable and Disable Times
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
SP483E_100_020912
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