SP3223E Datasheet, PDF (16/24 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 23. Stage I of AUTO ON-LINE^® Circuitry
Delay
Stage
Delay
Stage
Delay
Stage
Delay
Stage
Delay
Stage
R₁INACT
R₂INACT
R₃INACT
R₄INACT
SHUTDOWN
R₅INACT
STATUS
Figure 24. Stage II of AUTO ON-LINE^® Circuitry
Rev. 11/14/02
SP3223E +3.0V to +5.5V RS-232 Transceivers
16
© Copyright 2002 Sipex Corporation