參數(shù)資料
型號： MAX1490B
廠商： Maxim Integrated Products, Inc.
英文描述： Complete, Isolated RS-485/RS-422 Data Interface(2.5Mbps，全雙工，完全隔離的RS-485/422收發(fā)器)
中文描述： 完備的隔離型、RS-485/RS-422數(shù)據(jù)接口
文件頁數(shù)： 14/20頁
文件大?。?/td> 315K
代理商： MAX1490B
M
Complete, Isolated,
RS -485/RS -422 Data Interfac e
14
______________________________________________________________________________________
Figure 6. Driver Timing Test Load
OUTPUT
UNDER TEST
500
S1
S2
ISOV
CC
_
C
L
Figure 7. Driver Propagation Delays and Transition Times
DI
′
0V
B
A
V
O
0V
-V
O
V
O
t
PLH
1/2 V
O
10%
t
R
90%
90%
t
PHL
1/2 V
O
10%
t
F
V
DIFF
= V (A) - V (B)
V
DIFF
V
CC_
- 0.4V
V
CC_
- 0.4V
2
t
SKEW =
t
PLH
- t
PHL
V
CC_
- 0.4V
2
Figure 8. Driver Enable and Disable Times
OUTPUT NORMALLY LOW
OUTPUT NORMALLY HIGH
0V
A, B
V
OL
A, B
0V
V
OL
+ 0.5V
V
CC_
- 0.4V
2
V
CC_
- 0.4V
2
V
CC_
-0.4V
V
OH
- 0.5V
2.3V
2.3V
t
ZL
t
LZ
t
ZH
t
HZ
DE
′
Figure 9. Times to/from Shutdown
OUTPUT NORMALLY LOW
OUTPUT NORMALLY HIGH
2.4V
SD
0.8V
A, B
V
OL
A, B
0V
1.6V
1.6V
V
OL
+ 0.5V
V
OH
- 0.5V
2.3V
2.3V
t
ZL(SHDN)
t
SHDN
t
ZH(SHDN)
t
SHDN
Figure 10. Receiver Propagation Delays
V
OH
V
OL
-V
ID
V
ID
1.5V
0V
1.5V
1.5V
1.5V
MAX1480A/B
OUTPUT
MAX1490A/B
OUTPUT
INPUT
0V
RO
ROV
OH
V
OL
V
A
- V
B
t
PHL
t
PLH
t
PLH
t
PHL
t
SKEW
=
t
PLH -
t
PHL
_______________________________________________________S witc hing Waveforms
____________________________________________________Test Circ uits (c ontinued)
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參數(shù)描述
MAX1490BCPG 功能描述:RS-422/RS-485 接口 IC RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)速率:1136 Kbps 工作電源電壓:3 V to 5.5 V 電源電流:5.9 mA 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-28 封裝:Tube
MAX1490BCPG+ 功能描述:RS-422/RS-485 接口 IC Isolated RS-485/422 Data Interface RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)速率:1136 Kbps 工作電源電壓:3 V to 5.5 V 電源電流:5.9 mA 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-28 封裝:Tube
MAX1490BEPG 功能描述:RS-422/RS-485 接口 IC RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)速率:1136 Kbps 工作電源電壓:3 V to 5.5 V 電源電流:5.9 mA 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-28 封裝:Tube
MAX1490BEPG+ 功能描述:RS-422/RS-485 接口 IC Isolated RS-485/422 Data Interface RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)速率:1136 Kbps 工作電源電壓:3 V to 5.5 V 電源電流:5.9 mA 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-28 封裝:Tube
MAX1490EACPCS 制造商:Maxim Integrated Products 功能描述:
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