ISL8488 INTERSIL [Intersil Corporation], ISL8488 Datasheet - Page 7

• Manufacturer Part Number: ISL8488
• Description: 5V, Low Power, High Speed or Slew Rate Limited, RS-485/RS-422 Transceivers
• Manufacturer: INTERSIL [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.
Receiver Disable from Output Low
Maximum Data Rate
Time to Shutdown (ISL8483 only)
Driver Enable from Shutdown to
Output High (ISL8483 only)
Driver Enable from Shutdown to
Output Low (ISL8483 only)
Receiver Enable from Shutdown to
Output High (ISL8483 only)
Receiver Enable from Shutdown to
Output Low (ISL8483 only)
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 ISL8483, keep RE = 0 to prevent the device from entering SHDN.
6. When testing the ISL8483, the RE signal high time must be short enough (typically <200ns) to prevent the device from entering SHDN.
7. The ISL8483 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
8. Keep RE = V
9. Set the RE signal high time >600ns to ensure that the device enters SHDN.
otherwise specified.
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.
ISL8483, ISL8485, ISL8488, ISL8489, ISL8490, ISL8491
7
Test Conditions: V
Typicals are at V
V
CC
t
t
t
t
SYMBOL
ZH(SHDN)
ZH(SHDN)
ZL(SHDN)
ZL(SHDN)
t
f
SHDN
MAX
t
LZ
DE
DI
C
Note 7
C
C
C
C
L
L
L
L
L
D
CC
= 15pF, SW = V
= 100pF, SW = GND, Figure 3, Notes 7, 8
= 100pF, SW = V
= 15pF, SW = GND, Figure 5, Notes 7, 9
= 15pF, SW = V
CC
FIGURE 1. DRIVER V
= 5V, T
= 4.5V to 5.5V; Unless Otherwise Specified.
Y
Z
A
TEST CONDITIONS
= 25
o
CC
CC
C, Note 2 (Continued)
CC
V
, Figure 5
, Figure 5, Notes 7, 9
OD
, Figure 3, Notes 7, 8
OD
AND V
R
R
OC
V
OC
TEMP
(
Full
Full
Full
Full
Full
Full
Full
o
C)
MIN
250
50
-
-
-
-
-
TYP
200
10
-
-
-
-
-
MAX
2000
2000
2500
2500
600
50
-
UNITS
kbps
ns
ns
ns
ns
ns
ns