參數(shù)資料
型號(hào): SP3485
英文描述: 3.3V Low Power Half-Duplex RS-485 Transceivers with 10Mbps Data Rate(3.3V,低功耗,半雙工RS-485收發(fā)器(數(shù)據(jù)傳輸率10Mbps))
中文描述: 3.3V低功耗半雙工RS - 485與10Mbps的數(shù)據(jù)速率(3.3,低功耗,半雙工RS - 485接口收發(fā)器(數(shù)據(jù)傳輸率高達(dá)10Mbps)收發(fā)器)
文件頁(yè)數(shù): 6/9頁(yè)
文件大?。?/td> 156K
代理商: SP3485
SP3481/3485DS/21
SP3481/3485 Low Power Half-Duplex RS485 Transceivers
6
Copyright 2000 Sipex Corporation
Figure 8. Driver Propagation Delay Waveforms
Figure 12. Receiver Enable and Disable Waveforms
Figure 11. Receiver Propagation Delay Waveforms
Figure 10. Driver Enable and Disable Timing Waveforms
0V
V
OH
t
PLH
t
PHL
V
OM
t
PHL
t
PLH
3V
V
OL
V
OH
1.5V
1.5V
INPUT
Y OUTPUT
V
OM
Z OUTPUT
V
OL
V
OM
V
OM
V
OM
=V
OH
+ V
OL
2
1.5V
0V
V
OH
t
PZH
0.25V
t
PHZ
V
OM
t
PZL
t
PLZ
3V
V
OL
V
CC
1.5V
1.5V
DE
OUTPUT
HIGH
V
OM
0.25V
0V
OUTPUT
LOW
V
OM
=V
OH
+ V
OL
2
1.5V
3V
0V
V
CC
t
RPLH
1.5V
t
RPHL
V
OM
V
OM
0V
1.5V
INPUT
OUTPUT
V
OM
=V
CC
2
NOTE 1:
The input pulse is supplied by a generator with the following characteristics:
PRR=250KHz, 50% duty cycle, t
< 6.0ns, Z
=50
.
NOTE 2:
C
L
includes probe and stray capacitance.
IN
1.5V
t
DO1
1.5V
t
DO2
3V
0V
OUT
50%
10%
50%
10%
90%
90%
t
TD
t
TD
2.0V
-2.0V
Figure 9. Driver Differential Output Delay and Transition
Time Waveforms
3V
0V
t
PRHZ
1.5V
t
PRZH
t
PRSH
1.5V
1.5V
10%
0V
V
OH
RE
OUTPUT
S1 is open
S2 is closed
S3 = 1.5V
3V
0V
t
PRLZ
1.5V
t
PRZL
t
PRSL
1.5V
1.5V
10%
V
CC
RE
OUTPUT
S1 is closed
S2 is open
S3 = -1.5V
V
OL
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