參數(shù)資料
型號(hào)： MAX3491
廠商： Maxim Integrated Products, Inc.
英文描述： 3.3V-Powered, 10Mbps and Slew-Rate-Limited True RS-485/RS-422 Transceivers(10Mbps,具關(guān)閉方式,全雙工，RS-485/RS-422收發(fā)器)
中文描述： 3.3V供電、10Mbps、限擺率、真RS-485/RS-422收發(fā)器
文件頁(yè)數(shù)： 4/16頁(yè)
文件大?。?/td> 251K
代理商： MAX3491
M
3.3V-Powered, 10Mbps and S lew-Rate-Limited
True RS -485/RS -422 Transc eivers
4
_______________________________________________________________________________________
DRIVER SWITCHING CHARACTERISTICS—MAX3483 and MAX3488
(V
CC
= 3.3V, T
A
= +25°C)
ns
μs
50
1.9
80
2.7
t
PLZ
t
PSL
Driver Output Disable Time from Low Level
Driver Output Enable Time from Shutdown to Low Level
R
L
= 110
, Figure 10
R
L
= 110
, Figure 10
ns
ns
ns
700
700
1000
1000
100
1500
1500
t
PLH
t
PHL
t
PDS
Driver Propagation Delay, Low-to-High Level
Driver Propagation Delay, High-to-Low Level
|
t
PLH
- t
PHL
|
Driver Propagation Delay Skew (Note 2)
DRIVER OUTPUT ENABLE/DISABLE TIMES (MAX3483 only)
ns
400
700
1200
t
TD
ns
600
900
1400
t
DD
Driver Differential Output Delay
Driver Differential Output Transition Time
μs
2.2
3.0
t
PSH
Driver Output Enable Time from Shutdown to High Level
ns
50
80
t
PHZ
Driver Output Disable Time from High Level
ns
ns
900
600
1300
800
t
PZL
t
PZH
Driver Output Enable Time to Low Level
Driver Output Enable Time to High Level
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
R
L
= 27
, Figure 8
R
L
= 27
, Figure 8
R
L
= 27
, Figure 8
R
L
= 60
, Figure 7
R
L
= 60
, Figure 7
R
L
= 110
, Figure 9
R
L
= 110
, Figure 9
R
L
= 110
, Figure 10
R
L
= 110
, Figure 9
CONDITIONS
RECEIVER SWITCHING CHARACTERISTICS
(V
CC
= 3.3V, T
A
= +25°C)
ns
25
45
t
PRLZ
Receiver Output Disable
Time from Low Level
C
L
= 15pF, Figure 12,
MAX3483/MAX3485/MAX3486/MAX3491 only
ns
25
25
65
75
90
120
ns
80
190
300
t
SHDN
Time to Shutdown
ns
720
1400
t
PRSH
Receiver Output Enable Time
from Shutdown to High Level
ns
720
1400
t
PRSL
Receiver Output Enable Time
from Shutdown to Low Level
ns
25
45
t
PRHZ
Receiver Output Disable
Time from High Level
ns
25
25
65
75
90
120
ns
10
20
ns
25
50
t
PRZL
Receiver Output Enable Time
to Low Level
ns
25
50
t
PRZH
ReceiverOutput Enable Time
to High Level
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
V
ID
= 0V to 3.0V, C
L
= 15pF, Figure 11
MAX3483/MAX3488
MAX3483/MAX3485/MAX3486/MAX3491 only
(Note 3)
C
L
= 15pF, Figure 12,
MAX3483/MAX3485/MAX3486/MAX3491 only
C
L
= 15pF, Figure 12,
MAX3483/MAX3485/MAX3486/MAX3491 only
C
L
= 15pF, Figure 12,
MAX3483/MAX3485/MAX3486/MAX3491 only
V
ID
= 0V to 3.0V, C
L
= 15pF, Figure 11
MAX3483/MAX3488
V
ID
= 0V to 3.0V, C
L
= 15pF, Figure 11
MAX3483/MAX3488
C
L
= 15pF, Figure 12,
MAX3483/MAX3485/MAX3486/MAX3491 only
C
L
= 15pF, Figure 12,
MAX3483/MAX3485/MAX3486/MAX3491 only
CONDITIONS
t
RPLH
Receiver Propagation Delay,
Low-to-High Level
t
RPHL
Receiver Propagation Delay,
High-to-Low Level
|
t
PLH
- t
PHL
|
Receiver
Propagation Delay Skew
t
RPDS
Note 1:
V
OD
and
V
OC
are the changes in V
OD
and V
OC
, respectively, when the DI input changes state.
Note 2:
Measured on
|
t
PLH
(Y) - t
PHL
(Y)
|
and
|
t
PLH
(Z) - t
PHL
(Z)
|
Note 3:
The transceivers are put into shutdown by bringing RE high and DE low. If the inputs are in this state for less than 80ns, the
parts are guaranteed not to enter shutdown. If the inputs are in this state for at least 300ns, the parts are guaranteed to
have entered shutdown. See Low-Power Shutdown Mode section.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX3491C/D 功能描述:RS-422/RS-485 接口 IC 3.3V Powered 10Mbps and Slew-Rate Limited True RS-485/RS-422 Transceiver 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
MAX3491CPD 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
MAX3491CPD+ 功能描述:RS-422/RS-485 接口 IC 3.3V 10Mbps Transceiver 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
MAX3491CSD 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
MAX3491CSD+ 功能描述:RS-422/RS-485 接口 IC 3.3V 10Mbps Transceiver 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
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