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參數資料
| 型號： | ISL84391 |
| 英文描述： | 3.3V. Low Power. Slew Rate Limited. RS-485/RS-422 Transeivers |
| 中文描述： | 3.3。低功耗。轉換率受限的。 RS-485/RS-422收發Transeivers |
| 文件頁數： | 7/17頁 |
| 文件大小： | 533K |
| 代理商： | ISL84391 |
7
Driver Disable from Output Low
(Except ISL83488)
t
LZ
R
L
= 110
, C
L
= 50pF, SW = V
CC
(Figure 3)
25
-
70
80
ns
Full
-
-
110
ns
Driver Enable from Shutdown to
Output High (Except ISL83488)
t
ZH(SHDN)
R
L
= 110
, C
L
= 50pF, SW = GND (Notes 7, 8)
Full
-
450
2000
ns
Driver Enable from Shutdown to
Output Low (Except ISL83488)
t
ZL(SHDN)
R
L
= 110
, C
L
= 50pF, SW = V
CC
(Figure 3),
(Notes 7, 8)
Full
-
126
2000
ns
RECEIVER SWITCHING CHARACTERISTICS (All Versions)
Receiver Input to Output Delay
t
PLH
, t
PHL
t
SKD
(Figure 4)
Full
25
45
90
ns
Receiver Skew | t
PLH
- t
PHL
|
(Figure 4)
25
-
2
10
ns
Full
-
2
12
ns
Receiver Enable to Output High
(Except ISL83488 and ISL83490)
t
ZH
R
L
= 1k
, C
L
= 15pF, SW = GND (Figure 5),
(Note 6)
Full
-
11
50
ns
Receiver Enable to Output Low
(Except ISL83488 and ISL83490)
t
ZL
R
L
= 1k
, C
L
= 15pF, SW = V
CC
(Figure 5),
(Note 6)
Full
-
11
50
ns
Receiver Disable from Output High
(Except ISL83488 and ISL83490)
t
HZ
R
L
= 1k
, C
L
= 15pF, SW = GND (Figure 5)
Full
-
7
45
ns
Receiver Disable from Output Low
(Except ISL83488 and ISL83490)
t
LZ
R
L
= 1k
, C
L
= 15pF, SW = V
CC
(Figure 5)
Full
-
7
45
ns
Time to Shutdown
(Except ISL83488 and ISL83490)
t
SHDN
(Note 7)
Full
80
190
300
ns
Receiver Enable from Shutdown to
Output High
(Except ISL83488 and ISL83490)
t
ZH(SHDN)
R
L
= 1k
, C
L
= 15pF, SW = GND (Figure 5),
(Notes 7, 9)
Full
-
240
600
ns
Receiver Enable from Shutdown to
Output Low
(Except ISL83488 and ISL83490)
t
ZL(SHDN)
R
L
= 1k
, C
L
= 15pF, SW = V
CC
(Figure 5),
(Notes 7, 9)
Full
-
240
600
ns
NOTES:
2. All currents into device pins are positive; all currents out of device pins are negative. All voltages are referenced to device ground unless
otherwise specified.
3. Supply current specification is valid for loaded drivers when DE = 0V.
4. Applies to peak current. See “Typical Performance Curves” for more information.
5. When testing the ISL83483, ISL83485, ISL83491, keep RE = 0 to prevent the device from entering SHDN.
6. When testing the ISL83483, ISL83485, ISL83491, the RE signal high time must be short enough (typically <100ns) to prevent the device from
entering SHDN.
7. The ISL83483, ISL83485, ISL83491 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.
8. Keep RE = VCC, and set the DE signal low time >300ns to ensure that the device enters SHDN.
9. Set the RE signal high time >300ns to ensure that the device enters SHDN.
Electrical Specifications
Test Conditions: V
CC
= 3V to 3.6V; Unless Otherwise Specified. Typicals are at V
CC
= 3.3V, T
A
= 25
o
C,
Note 2
(Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
TEMP
(
o
C)
MIN
TYP
MAX
UNITS
ISL83483, ISL83485, ISL83488, ISL83490, ISL83491
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