XR32220 Datasheet, PDF (11/13 Pages) Exar Corporation – 2-Driver/2-Receiver Intelligent RS-232 Transceiver

XR32220
Valid
RS-232
Level at
Receiver
Input
Yes
No
Yes
No
Yes
No
Table 2: XR32220 Operation Truth Table
Shutdown
OnLine
Driver Receiver
Outputs Outputs
Status
Mode of Operation
L
x
High-Z High-Z
H Manually forced shutdown
L
x
High-Z High-Z
L Manually forced shutdown
H
L
Active Active
H Normal Operation
(Auto On-Line enabled)
H
L
High-Z Active
L Standby Operation due to
Auto On-Line® circuitry
H
H
Active Active
H Normal Operation
H
H
Active Active
L Normal Operation
Table 3: XR32220 Driver and Receiver Truth Table
Shutdown
RxIN
RxOUT
TxIN
TxOUT
L
x
High-Z
x
High-Z
H
L
H
L
H
H
H
L
H
L
© 2014 Exar Corporation
11 / 13
exar.com/XR32220
Rev 1A