SP3243E EXAR [Exar Corporation], SP3243E Datasheet - Page 15

• Manufacturer Part Number: SP3243E
• Description: 3 Driver/5 Receiver Intelligent +3.0V to +5.5V RS-232 Transceivers
• Manufacturer: EXAR [Exar Corporation]

Table 3. AUTO ON-LINE
Figure 21. Stage I of AUTO ON-LINE
Figure 22. Stage II of AUTO ON-LINE
R
A
S
T
2 -
R
N I
3
YES
YES
E
N
N
2
NO
P
C
I S
O
O
U
E
G
T
V I
Delay
Stage
N
E
R
A
1
R
R X IN
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
INACT
L
®
Logic
S
H
Delay
Stage
HIGH
U
R
N I
I H
I H
LOW
LOW
2
INACT
T
P
G
G
D
U
O
H
H
T
W
Receiver Block
®
®
N
Circuitry
Circuitry
Inactive Detection Block
RS-232
Stage
Delay
R
3
INACT
O
HIGH / LOW
HIGH / LOW
N
L
I H
N I
LOW
L
SHUTDOWN
O
15
E
G
W
Delay
Stage
N I
H
R
P
4
INACT
U
T
S
T
Delay
Stage
A
R
T
5
INACT
U
I H
I H
L
L
L
S
O
O
O
G
G
R X INACT
O
W
W
W
H
H
U
R X OUT
T
P
UT
N
N
T
r o
(Auto-Online)
r o
(
R
A
SP3243E_100_072309
m
m
A
S
S
S
t u
S
h
h
h
N
l a
l a
T
- o
STATUS
u
u
u
S
A
d t
d t
d t
O
O
O
C
T
p
p
o
o
o
E
U
l n
r e
r e
w
w
w
V I
S
n i
n
n
n
t a
t a
E
e
o i
o i
R
)
n
n