ISL3150E Datasheet, PDF (3/22 Pages) Intersil Corporation – ±16.5kV ESD, Large Output Swing, 5V, Full Fail-Safe, 1/8 Unit Load, RS-485/RS-422 Transceivers

ISL3150E, ISL3152E, ISL3153E, ISL3155E, ISL3156E, ISL3158E
Pin Descriptions
PIN
RO
RE
DE
DI
GND
A/Y
B/Z
A
B
Y
Z
V_CC
NC
FUNCTION
Receiver output: If A-B ≥ -50mV, RO is high; If A-B ≤ -200mV, RO is low; RO = High if A and B are unconnected
(floating) or shorted.
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.
±16.5kV IEC61000 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.
±16.5kV IEC61000 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.
±16.5kV IEC61000 ESD Protected RS-485/RS-422 level, non-inverting receiver input.
±16.5kV IEC61000 ESD Protected RS-485/RS-422 level, inverting receiver input.
±16.5kV IEC61000 ESD Protected RS-485/RS-422 level, non-inverting driver output.
±16.5kV IEC61000 ESD Protected RS-485/RS-422 level, inverting driver output.
System power supply input (4.5V to 5.5V).
No Connection.
Truth Tables
TRANSMITTING
INPUTS
OUTPUTS
RE
DE
DI
Z
Y
X
1
1
0
1
X
1
0
1
0
0
0
X
High-Z
High-Z
1
0
X
High-Z* High-Z*
NOTE: *Shutdown Mode (See Note 11).
RECEIVING
INPUTS
OUTPUT
RE
DE
DE
A-B
RO
Half
Full
Duplex Duplex
0
0
X
≥ -0.05V
1
0
0
X
≤ -0.2V
0
0
0
X
Inputs
1
Open/Shorted
1
0
0
X
High-Z*
1
1
1
X
High-Z
NOTE: *Shutdown Mode (See Note 11).
3
FN6363.2
July 30, 2009