SP3223E_06 Datasheet, PDF (14/23 Pages) Sipex Corporation – Intelligent +3.0V to +5.5V RS-232 Transceivers

RS-232 SIGNAL
AT RECEIVER
INPUT
YES
SHUTDOWN
INPUT
HIGH
NO
HIGH
NO
HIGH
YES
LOW
NO
LOW
Table 3. AUTO ON-LINE^® Logic
ONLINE INPUT
STATUS OUTPUT
TRANSCEIVER
STATUS
LOW
HIGH
LOW
HIGH/LOW
HIGH
LOW
LOW
HIGH
Normal Operation
(AUTO ON-LINE^® )
Normal Operation
Shutdown
(AUTO ON-LINE^® )
Shutdown
HIGH/LOW
LOW
Shutdown
Inactive Detection Block
RXINACT
RXIN
RS-232
Receiver Block
RXOUT
Figure 22. Stage I of AUTO ON-LINE^® Circuitry
Delay
Buffer
Delay
Buffer
R₁ON
R₂ON
SHUTDOWN
Figure 23. Stage II of AUTO ON-LINE^® Circuitry
Date: 10/06/06
SP3223 +3.0V to +5.5V RS-232 Transceivers
14
STATUS
© Copyright 2006 Sipex Corporation