*SOIC also available in Tape and Reel; Add “-T” to suffix.
**Pb-free PDIPs can be used for through hole wave solder processing only. They are not intended for use in Reflow solder processing applications.
NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate termination finish,
which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow
temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
FN6050 Rev 8.00
March 14, 2016
Page 2 of 14
ISL8487, ISL81483, ISL81487
Pin Descriptions
PIN
RO
RE
DE
DI
GND
A/Y
B/Z
V
CC
FUNCTION
Receiver output: If A > B by at least 0.2V, RO is high; If A < B by 0.2V or more, RO is low; RO = High if A and B are unconnected (floating).
Receiver output enable. RO is enabled when RE is low; RO is high impedance when RE is high.
Driver output enable. The driver outputs, Y and Z, are enabled by bringing DE high. They are high impedance when DE is low.
Driver input. A low on DI forces output Y low and output Z high. Similarly, a high on DI forces output Y high and output Z low.
Ground connection.
RS-485/422 level, noninverting receiver input and noninverting driver output. Pin is an input (A) if DE = 0; pin is an output (Y) if DE = 1.
RS-485/422 level, inverting receiver input and inverting driver output. Pin is an input (B) if DE = 0; pin is an output (Z) if DE = 1.
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTE:
1.
JA
is measured with the component mounted on a low effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
Electrical Specifications
Test Conditions: V
CC
= 4.5V to 5.5V; Unless Otherwise Specified. Typicals are at V
CC
= 5V, T
A
= 25°C,
(Note 2)
SYMBOL
TEST CONDITIONS
TEMP
(°C)
MIN
TYP
MAX
UNITS
PARAMETER
DC CHARACTERISTICS
Driver Differential V
OUT
(no load)
Driver Differential V
OUT
(with load)
Change in Magnitude of Driver
Differential V
OUT
for
Complementary Output States
Driver Common-Mode V
OUT
Change in Magnitude of Driver
Common-Mode V
OUT
for
Complementary Output States
Logic Input High Voltage
Logic Input Low Voltage
Logic Input Current
Input Current (A/Y, B/Z), (Note 10)
(ISL81483, ISL81487)
V
OD1
V
OD2
V
OD
R = 50 (RS-422), (Figure 1)
R = 27 (RS-485), (Figure 1)
R = 27 or 50, (Figure 1)
Full
Full
Full
Full
-
2
1.5
-
-
3
2.3
0.01
V
CC
-
5
0.2
V
V
V
V
V
OC
V
OC
R = 27 or 50, (Figure 1)
R = 27 or 50, (Figure 1)
Full
Full
-
-
-
0.01
3
0.2
V
V
V
IH
V
IL
I
IN1
I
IN2
I
IN2
DE, DI, RE
DE, DI, RE
DE, DI, RE
DE = 0V, V
CC
= 4.5 to
5.5V
DE = 0V, V
CC
= 0V
DE = 0V, V
CC
= 0V, or
4.5 to 5.5V
-7V
V
CM
12V
V
CM
= 0V
I
O
= -4mA, V
ID
= 200mV
I
O
= -4mA, V
ID
= 200mV
0.4V
V
O
2.4V
V
IN
= 12V
V
IN
= -7V
V
IN
= 12V
V
IN
= -7V
V
IN
= 12V
V
IN
= -7V
Full
Full
Full
Full
Full
Full
Full
Full
Full
Full
25
Full
Full
Full
2
-
-2
-
-
-
-
-
-
-0.2
-
3.5
-
-
-
-
-
-
-
-
-
-
-
-
70
-
-
-
-
0.8
2
140
-120
180
-100
250
-100
0.2
-
-
0.4
1
V
V
A
A
A
A
A
A
A
V
mV
V
V
A
Input Current (A/Y, B/Z), (Note 11)
(ISL8487 Only)
Receiver Differential Threshold
Voltage
Receiver Input Hysteresis
Receiver Output High Voltage
Receiver Output Low Voltage
Three-State (high impedance)
Receiver Output Current
I
IN2
V
TH
V
TH
V
OH
V
OL
I
OZR
FN6050 Rev 8.00
March 14, 2016
Page 4 of 14
ISL8487, ISL81483, ISL81487
Electrical Specifications
Test Conditions: V
CC
= 4.5V to 5.5V; Unless Otherwise Specified. Typicals are at V
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