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參數(shù)資料
| 型號： | ISL8485ECB-T |
| 廠商： | INTERSIL CORP |
| 元件分類： | 通用總線功能 |
| 英文描述： | ESD Protected to 【15kV, 5V, Low Power, High Speed or Slew Rate Limited, RS-485/RS-422 Transceivers |
| 中文描述： | LINE TRANSCEIVER, PDSO8 |
| 封裝： | PLASTIC, MS-012AA, SOIC-8 |
| 文件頁數(shù)： | 6/14頁 |
| 文件大小： | 416K |
| 代理商： | ISL8485ECB-T |
6
Driver Enable from Shutdown to
Output Low
t
ZL(SHDN)
C
L
= 100pF, SW = V
CC
, (Figure 3), (Notes 7, 8)
Full
-
-
2000
ns
Receiver Enable from Shutdown to
Output High
t
ZH(SHDN)
C
L
= 15pF, SW = GND, (Figure 5), (Notes 7, 9)
Full
-
-
2500
ns
Receiver Enable from Shutdown to
Output Low
t
ZL(SHDN)
C
L
= 15pF, SW = V
CC
, (Figure 5), (Notes 7, 9)
Full
-
-
2500
ns
ESD PERFORMANCE
RS-485 Pins (A/Y, B/Z)
Human Body Model
25
-
±
15
-
kV
All Other Pins
25
-
>
±
7
-
kV
NOTE:
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 ISL8483E, keep RE = 0 to prevent the device from entering SHDN.
6. When testing the ISL8483E, the RE signal high time must be short enough (typically <200ns) to prevent the device from entering SHDN.
7. The ISL8483E is put into shutdown by bringing RE high and DE low. If the inputs are in this state for less than 50ns, the parts are guaranteed
not to enter shutdown. If the inputs are in this state for at least 600ns, the parts are guaranteed to have entered shutdown. See “Low-Power
Shutdown Mode” section.
8. Keep RE = V
CC
, and set the DE signal low time >600ns to ensure that the device enters SHDN.
9. Set the RE signal high time >600ns to ensure that the device enters SHDN.
10. Devices meeting these limits are denoted as “single unit load (1 UL)” transceivers. The RS-485 standard allows up to 32 Unit Loads on the bus.
Test Circuits and Waveforms
FIGURE 1. DRIVER V
OD
AND V
OC
Electrical Specifications
Test Conditions: V
CC
= 4.5V to 5.5V; Unless Otherwise Specified.
Typicals are at V
CC
= 5V, T
A
= 25
o
C, (Note 2)
(Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
TEMP
(
o
C)
MIN
TYP
MAX
UNITS
D
DE
DI
V
CC
V
OD
V
OC
R
R
Z
Y
ISL8483E, ISL8485E
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