ISL32490E INTERSIL [Intersil Corporation], ISL32490E Datasheet - Page 3

• Manufacturer Part Number: ISL32490E
• Manufacturer: INTERSIL [Intersil Corporation]

Truth Tables
NOTE: Low Power Shutdown Mode (see Note 11 on page 9).
Pin Descriptions
NAME
GND
A/Y
B/Z
VCC
PIN
RO
RE
DE
NC
DI
ISL32490E, ISL32492E, ISL32493E, ISL32495E, ISL32496E, ISL32498E
A
B
Y
Z
RE
X
X
0
1
PIN #
8 LD
INPUTS
1
2
3
4
5
6
7
8
-
-
-
-
-
DE
1
1
0
0
TRANSMITTING
13, 14 System power supply input (4.5V to 5.5V).
14 LD
PIN #
1, 8
6, 7
12
11
10
2
3
4
5
9
-
-
3
DI
1
0
X
X
Receiver output. If A-B ≥ -10mV, RO is high; if A-B ≤ -200mV, RO is low; RO = High if A and B are unconnected
(floating), shorted together, or connected to an undriven, terminated bus.
Receiver output enable. RO is enabled when RE is low; RO is high impedance when RE is high. Internally pulled
low.
Driver output enable. The driver outputs, Y and Z, are enabled by bringing DE high. They are high impedance when
DE is low. Internally pulled high.
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.
±60V Fault and ±16.5kV HBM ESD Protected RS-485/RS-422 level, non-inverting receiver input and non-inverting
driver output. Pin is an input if DE = 0; pin is an output if DE = 1.
±60V Fault and ±16.5kV HBM ESD Protected RS-485/RS-422 level, inverting receiver input and inverting driver
output. Pin is an input if DE = 0; pin is an output if DE = 1.
±60V Fault and ±15kV HBM ESD Protected RS-485/RS-422 level, non-inverting receiver input.
±60V Fault and ±15kV HBM ESD Protected RS-485/RS-422 level, inverting receiver input.
±60V Fault and ±15kV HBM ESD Protected RS-485/RS-422 level, non-inverting driver output.
±60V Fault and ±15kV HBM ESD Protected RS-485/RS-422 level, inverting driver output.
No internal connection.
(see Note)
High-Z
High-Z
Z
0
1
OUTPUTS
(see Note)
High-Z
High-Z
Y
1
0
NOTE: Low Power Shutdown Mode (see Note 11 on page 9).
RE
0
0
0
1
1
FUNCTION
Half Duplex
DE
0
0
0
0
1
INPUTS
Full Duplex
RECEIVING
DE
X
X
X
0
1
Open/Shorted
≥ -0.01V
≤ -0.2V
Inputs
A-B
X
X
January 18, 2011
(see Note)
OUTPUT
High-Z
High-Z
FN7786.0
RO
1
0
1