ISL3179EFBZ-T7A Intersil, ISL3179EFBZ-T7A Datasheet - Page 2

• Manufacturer Part Number: ISL3179EFBZ-T7A
• Description: IC TXRX RS485/422 ESD 8SOIC
• Manufacturer: Intersil

Specifications of ISL3179EFBZ-T7A

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Pinouts
Truth Table
NOTE: *Shutdown Mode
Pin Descriptions
PIN
RO
RE
DE
DI
RE
X
X
0
1
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, or
connected to a terminated bus that is undriven.
Receiver output enable. RO is enabled when RE is low; RO is high impedance when RE is high. If the Rx enable function isn’t required,
connect RE directly to GND.
Driver output enable. The driver outputs, Y and Z, are enabled by bringing DE high, and they are high impedance when DE is low. If
the Tx enable function isn’t required, connect DE to V
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.
INPUTS
DE
1
1
0
0
RO
RE
DE
DI
TRANSMITTING
(8 LD SOIC, MSOP)
1
2
3
4
TOP VIEW
ISL3179E
DI
R
D
X
X
1
0
2
High-Z*
8
7
6
5
High-Z
B/Z
0
1
V
B/Z
A/Y
GND
CC
OUTPUTS
ISL3179E, ISL3180E
High-Z*
GND
GND
High-Z
NC
RO
RE
DE
A/Y
DI
1
0
1
2
3
4
5
6
7
CC
TOP VIEW
ISL3180E
through a 1kΩ or greater resistor.
(SOIC)
R
D
FUNCTION
Truth Table
NOTE: *Shutdown Mode
14
13
12
10
11
9
8
RE
V
NC
A
B
Z
Y
NC
0
0
0
1
1
CC
RO
DE
NC
RE
DI
1
2
3
4
5
DE
0
0
0
1
0
INPUTS
(10 LD DFN)
TOP VIEW
ISL3179E
RECEIVING
A-B
≥ -0.05V
≤ -0.2V
Inputs Open/Shorted
X
X
10
9
8
7
6
V
NC
B/Z
A/Y
GND
CC
OUTPUT
High-Z*
High-Z
April 22, 2008
RO
1
0
1
FN6365.2