isl8485e Intersil Corporation, isl8485e Datasheet - Page 6

• Manufacturer Part Number: isl8485e
• Description: 5v, Half Duplex, 5mbps, ?15kv Esd Protected, Rs-485/rs-422 Transceiver
• Manufacturer: Intersil Corporation

Test Circuits and Waveforms
Electrical Specifications
NOTES:
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.
11. Guaranteed by characterization, but not tested.
Driver Enable from Shutdown to
Output Low
Receiver Enable from Shutdown to
Output High
Receiver Enable from Shutdown to
Output Low
ESD PERFORMANCE
RS-485 Pins (A/Y, B/Z)
All Other Pins
2. All currents into device pins are positive; all currents out of device pins are negative. All voltages are referenced to device ground unless
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
8. Keep RE = V
9. Set the RE signal high time >600ns to ensure that the device enters SHDN.
otherwise specified.
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.
PARAMETER
CC
, and set the DE signal low time >600ns to ensure that the device enters SHDN.
6
Test Conditions: V
Typicals are at V
t
t
t
SYMBOL
ZH(SHDN)
ZL(SHDN)
ZL(SHDN)
V
CC
DE
DI
C
C
C
Human Body Model
L
L
L
CC
CC
= 100pF, SW = V
= 15pF, SW = GND, (Figure 5), (Notes 7, 9)
= 15pF, SW = V
FIGURE 1. DRIVER V
= 5V, T
ISL8483E, ISL8485E
D
= 4.5V to 5.5V; Unless Otherwise Specified.
Z
Y
A
= 25
TEST CONDITIONS
°
CC
C, (Note 2) (Continued)
CC
V
, (Figure 5), (Notes 7, 9)
OD
, (Figure 3), (Notes 7, 8)
OD
AND V
R
R
OC
V
OC
TEMP
(°C)
Full
Full
Full
25
25
MIN
-
-
-
-
-
TYP
±15
>±7
-
-
-
MAX
2000
2500
2500
-
-
UNITS
ns
ns
ns
kV
kV