ISL81334IAZ-T Intersil, ISL81334IAZ-T Datasheet - Page 3

• Manufacturer Part Number: ISL81334IAZ-T
• Description: TXRX ESD RS-485/422 2PORT 28SSOP
• Manufacturer: Intersil
• Type: Transceiverr

Specifications of ISL81334IAZ-T

• Number Of Drivers/receivers: 2/2
• Protocol: RS422, RS485
• Voltage - Supply: 4.5 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 28-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: ISL81334IAZ-TTR

NOTE:
ISL81334 Truth Tables
SEL1 or 2 ON/OFF
SEL1 or 2 ON/OFF
1. Charge pumps are off iff SEL1 = SEL2 = 1, or if ON/OFF = 0. If ON = 1, and either port is programmed for RS-232 mode, then the charge
SEL1 or 2
pumps are on.
0
0
0
0
0
0
0
0
0
0
0
X
0
1
1
1
1
1
1
0
1
1
1
1
1
0
RS-232 TRANSMITTING MODE
INPUTS
INPUTS
INPUTS
ON/OFF
RS-232 RECEIVING MODE
1
0
1
1
Open
D
X
A
X
0
0
1
1
0
0
1
1
Y
DE 1 or 2
3
N.A.
(FOR EACH PORT)
Open
X
0
1
D
X
B
X
0
1
0
1
0
1
0
1
Z
High-Z
High-Z
R
RECEIVER OUTPUTS
High-Z
Y
1
1
0
0
1
1
0
0
1
TABLE 2. ISL81334 FUNCTION TABLE
OUTPUTS
A
ON
ON
ON
OUTPUT
R
A
ISL81334, ISL41334
High-Z
High-Z
R
Z
1
0
1
0
1
0
1
0
1
B
High-Z*
High-Z*
High-Z
ON
R
B
SEL1 or 2 ON/OFF DE1 or 2
SEL1 or 2 ON/OFF
*Internally pulled high through a 40kΩ resistor.
High-Z
High-Z
DRIVER OUTPUTS
ON
ON
1
1
1
1
Y
1
1
1
1
1
1
1
0
1
1
1
0
RS-485 TRANSMITTING MODE
High-Z
High-Z
INPUTS
ON
ON
RS-485 RECEIVING MODE
INPUTS
Z
Open or Shorted together
1
1
0
X
CHARGE PUMPS
≤ -200mV
≥ -40mV
B-A
(NOTE 1)
X
OFF
OFF
OFF
ON
D
0
1
X
X
Y
High-Z
High-Z
Y
1
0
High-Z
OUTPUTS
Shutdown
R
November 21, 2007
RS-232
RS-485
RS-485
1
0
1
MODE
OUTPUT
A
High-Z
High-Z
High-Z
High-Z
High-Z
High-Z
FN6202.3
R
Z
0
1
B
*