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| SP3238EEY-L-TR Datasheet, PDF (13/21 Pages) Exar Corporation – Intelligent +3.0V to +5.5V RS-232 Transceiver | |||
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RECEIVER +2.7V
RS-232 INPUT 0V
VOLTAGES -2.7V
STATUS
VCC
0V
+5V
DRIVER
RS-232 OUTPUT 0V
VOLTAGES
-5V
Figure 16. AUTO ON-LINE® Timing Waveforms
tSTSL
S
H
U
T
D
O
W
N
tSTSH
tONLINE
Inactive Detection Block
RXINACT
RXIN
RS-232
Receiver Block
RXOUT
Figure 17. Stage I of AUTO ON-LINE® Circuitry
Delay
Stage
Delay
Stage
Delay
Stage
Delay
Stage
Delay
Stage
R1INACT
R2INACT
R3INACT
R4INACT
SHUTDOWN
R5INACT
Figure 18. Stage II of AUTO ON-LINE® Circuitry
Exar Corporation 48720 Kato Road, Fremont CA, 94538 ⢠510-668-7017 ⢠www.exar.com
13
STATUS
SP3238E_100_020111
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