參數(shù)資料
型號(hào)： MAX3158
廠商： Maxim Integrated Products, Inc.
英文描述： 4x4 1.5 Gbps LVDS Crosspoint Switch 38-TSSOP -40 to 85
中文描述： 高共模抑制比RS-485收發(fā)器，提供±60V隔離
文件頁(yè)數(shù)： 4/14頁(yè)
文件大?。?/td> 305K
代理商： MAX3158
M
High CMRR RS-485 Transceiver
with ±60V Isolation
4
_______________________________________________________________________________________
SWITCHING CHARACTERISTICS
(V
CC
= +5V ±5%, YR = ZR = AR = BR = ISOCOM, C1 = C2 = 0.047μF, C3 = C4 = 1μF. Typical values are at V
CC
= +5V and T
A
= +25
°
C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
t
DPLH
Figures 3 and 5, R
DIFF
= 54
,
C
L1
= C
L2
= 100pF
400
1400
2000
Driver Input to Output
t
DPHL
Figures 3 and 5, R
DIFF
= 54
,
C
L1
= C
L2
= 100pF
400
1400
2000
ns
Driver Output Skew
|
t
DPLH
- t
DPHL
|
t
DSKEW
Figures 3 and 5, R
DIFF
= 54
,
C
L1
= C
L2
= 100pF
250
ns
Driver Rise or Fall Time
t
DR
, t
DF
Figures 3 and 5, R
DIFF
= 54
,
C
L1
= C
L2
=100pF
200
1200
2200
ns
Maximum Data Rate
Driver Enable to Output High
Driver Enable to Output Low
Driver Disable Time from Low
Driver Disable Time from High
f
MAX
t
DZH
t
DZL
t
DLZ
t
DHZ
t
RPLH
,
t
RPHL
250
kbps
ns
ns
ns
ns
Figures 4 and 6, C
L
= 100pF, S2 closed
Figures 4 and 6, C
L
= 100pF, S1 closed
Figures 4 and 6, C
L
= 15pF, S1 closed
Figures 4 and 6, C
L
= 15pF, S2 closed
3500
3500
300
300
Receiver Input to Output
Figures 7 and 9;
|
V
ID
|
≥
2.0V
440
600
ns
Differential Receiver Skew
|
t
RPLH
- t
RPHL
|
Receiver Enable to Output Low
Receiver Enable to Output High
Receiver Disable Time from Low
Receiver Disable Time from High
Time to Shutdown
t
RSKEW
Figures 7 and 9;
|
V
ID
|
≥
2.0V
20
ns
t
RZL
t
RZH
t
RLZ
t
RHZ
t
SHDN
t
DZH
(SHDN)
Figures 2 and 8, C
L
= 100pF, S1 closed
Figures 2 and 8, C
L
= 100pF, S2 closed
Figures 2 and 8, C
L
= 100pF, S1 closed
Figures 2 and 8, C
L
= 100pF, S2 closed
(Note 4)
20
20
200
200
200
50
50
500
500
700
ns
ns
ns
ns
ns
50
Driver Enable from Shutdown to
Output High
Figures 4 and 6, C
L
= 15pF, S2
closed
0.2
1
ms
Driver Enable from Shutdown to
Output Low
t
DZL
(SHDN)
Figures 4 and 6, C
L
= 15pF, S1 closed
0.2
1
ms
Receiver Enable from Shutdown
to Output High
t
RZH
(SHDN)
Figures 2 and 8, C
L
= 100pF, S2 closed
0.2
1
m s
Receiver Enable from Shutdown
to Output Low
t
RZL
(SHDN)
Figures 2 and 8, C
L
= 100pF, S1 closed
0.2
1
ms
Charge-Pump Oscillating
Frequency
f
OSC
1.3
MHz
Note 1:
All currents into the device are positive; all currents out of the device are negative. All voltages are referred to device
ground unless otherwise noted.
Note 2:
V
OD
and
V
OC
are the changes in V
OD
and V
OC
, respectively, when the DI input changes state.
Note 3:
Current level applies to peak current just prior to foldback-current limiting.
Note 4:
The device is put into shutdown by bringing
RE
high and DE low. If the enable inputs are in this state for less than 50ns,
the device is guaranteed not to enter shutdown. If the enable inputs are in this state for at least 700ns, the device is guaran-
teed to have entered shutdown.
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