參數(shù)資料
型號： MAX3140EEI
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 微控制器/微處理器
英文描述： CABLE ASSEMBLY; LEAD-FREE SOLDER; SMA MALE TO SMC PLUG; 50 OHM, RG400/U COAX, DOUBLE SHIELDED
中文描述： 1 CHANNEL(S), 240K bps, SERIAL COMM CONTROLLER, PDSO28
封裝： 0.150 INCH, 0.025 INCH PITCH, QSOP-28
文件頁數(shù)： 6/36頁
文件大?。?/td> 468K
代理商： MAX3140EEI
M
SPI/MICROWIRE-Compatible UART with Integrated
True Fail-Safe RS-485/RS-422 Transceivers
6
_______________________________________________________________________________________
SWITCHING CHARACTERISTICS—SRL = V
CC
(V
CC
= +5V ±5%, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
CC
= +5V and T
A
= +25°C.)
250
720
1000
Receiver Enable from Shutdown
to Output Low
t
RZL(SHDN)
3500
ns
Figures 2 and 8, C
L
= 100pF, S1 closed
t
DPHL
PARAMETER
SYMBOL
t
DPLH
MIN
250
TYP
720
MAX
1000
UNITS
Driver Disable Time from Low
Driver Disable Time from High
t
DLZ
t
DHZ
t
RPLH
,
t
RPHL
100
100
ns
ns
Driver Enable to Output Low
t
DZL
2500
ns
Driver Enable to Output High
t
DZH
2500
ns
Maximum Data Rate
f
MAX
500
kbps
Receiver Input to Output
127
200
ns
|
t
RPLH
- t
RPHL
|
Differential
Receiver Skew
Receiver Enable to Output Low
Receiver Enable to Output High
Receiver Disable Time from Low
t
RSKD
3
±30
ns
t
RZL
t
RZH
t
RLZ
20
20
20
50
50
50
ns
ns
ns
Driver Output Skew
|
t
DPLH
- t
DPHL
|
Driver Input to Output
ns
t
DSKEW
-3
±100
ns
Driver Rise or Fall Time
t
DR,
t
DF
200
530
750
ns
Receiver Disable Time from
High
t
RHZ
20
50
ns
Time to Shutdown
t
SHDN
50
200
600
ns
Driver Enable from Shutdown to
Output High
t
DZH(SHDN)
4500
ns
Driver Enable from Shutdown to
Output Low
t
DZL(SHDN)
4500
ns
Receiver Enable from Shutdown
to Output High
t
RZH(SHDN)
3500
ns
CONDITIONS
Figures 2 and 8, C
L
= 100pF, S2 closed
Figures 2 and 8, C
L
= 100pF, S1 closed
Figures 4 and 6, C
L
= 15pF, S1 closed
Figures 4 and 6, C
L
= 15pF, S2 closed
Figures 7 and 9,
|
V
ID
|
≥
2.0V,
rise and fall time of V
ID
≤
15ns
Figures 7 and 9,
|
V
ID
|
≥
2.0V,
rise and fall time of V
ID
≤
15ns
Figures 2 and 8, C
L
= 100pF, S1 closed
Figures 4 and 6, C
L
= 100pF, S1 closed
Figures 4 and 6, C
L
= 100pF, S2 closed
Figures 2 and 8, C
L
= 100pF, S2 closed
(Note 5)
Figures 4 and 6, C
L
= 15pF, S2 closed
Figures 4 and 6, C
L
= 15pF, S1 closed
Figures 2 and 8, C
L
= 100pF, S2 closed
Figures 3 and 5, R
DIFF
= 54
,
C
L1
= C
L2
= 100pF
Figures 3 and 5, R
DIFF
= 54
,
C
L1
= C
L2
= 100pF
Figures 3 and 5, R
DIFF
= 54
,
C
L1
= C
L2
= 100pF
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