SP3238 Datasheet, PDF (14/19 Pages) Sipex Corporation – Intelligent +3.0V to +5.5V RS-232 Transceiver

SHUTDOWN ONLINE
INPUT
INPUT
RS-232 SIGNAL AT
RECEIVER INPUT
STATUS
OUTPUT
T_XOUT
R_XOUT
R₁OUT
TRANSCEIVER
STATUS
HIGH
-
YES
HIGH Active Active Active Normal Operation
HIGH
HIGH
NO
HIGH
LOW
NO (>100µs)
LOW
-
YES
LOW
-
NO
Table 2. AUTO ON-LINE^® Logic
LOW Active Active Active Normal Operation
LOW
HIGH
LOW
High-Z Active Active
High-Z High-Z Active
High-Z High-Z Active
Shutdown
(AUTO ON-LINE^® )
Shutdown
Shutdown
Inactive Detection Block
RXINACT
RXIN
RS-232
Receiver Block
RXOUT
Figure 17. Stage I of AUTO ON-LINE^® Circuitry
Delay
Delay
Delay
Stage
Stage
Stage
R₁INACT
R₂INACT
Figure 18. Stage II of AUTO ON-LINE^® Circuitry
R₃INACT
STATUS
Rev. 6/30/03
SP3238 Intelligent +3.0V to +5.5V RS-232 Transceiver
14
© Copyright 2003 Sipex Corporation