SP3238EEA Sipex Corporation, SP3238EEA Datasheet
SP3238EEA
Manufacturer Part Number
SP3238EEA
Description
Manufacturer
Sipex Corporation
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Applicable U.S. Patents - 5,306,954; and other patents pending.
The SP3238E device is an RS-232 transceiver solution intended for portable or hand-held
applications such as notebook and palmtop computers. The SP3238E uses an internal
high-efficiency, charge-pump power supply that requires only 0.1µF capacitors in 3.3V
operation. This charge pump and Sipex's driver architecture allow the SP3238E device to
deliver compliant RS-232 performance from a single power supply ranging from +3.0V to
+5.0V. The SP3238E is a 5-driver/3-receiver device, ideal for laptop/notebook computer and
PDA applications. The SP3238E includes one complementary receiver that remains alert to
monitor an external device's Ring Indicate signal while the device is shutdown.
The AUTO ON-LINE
state when an RS-232 cable is connected and a connected peripheral is turned on. Otherwise,
the device automatically shuts itself down drawing less than 1µA.
Date: 03/04/05
S
S
S
S
D
P
P
P
P
Meets true EIA/TIA-232-F Standards
from a +3.0V to +5.5V power supply
Interoperable with EIA/TIA-232 and
adheres to EIA/TIA-562 down to a +2.7V
power source
AUTO ON-LINE
wakes up from a 1µA shutdown
Minimum 250Kbps data rate under load
Regulated Charge Pump Yields Stable
RS-232 Outputs Regardless of V
Variations
Enhanced ESD Specifications:
+15KV Human Body Model
+15KV IEC1000-4-2 Air Discharge
+8KV IEC1000-4-2 Contact Discharge
e
3
3
3
3
Intelligent +3.0V to +5.5V RS-232 Transceiver
v
2
2
2
2
c i
2
2
4
3
0
3
3
8
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P
+
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3
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0 .
0 .
0 .
0 .
r e
V
V
V
V
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o t
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o t
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u
+
+
+
+
p
®
5
5
5
5
l p
®
circuitry automatically
5 .
5 .
5 .
5 .
®
e i
feature allows the device to automatically "wake-up" during a shutdown
V
V
V
V
s
R
D
r
S
v i
2 -
2
3
5
1
e
3
s r
2
SP3238E Intelligent +3.0V to +5.5V RS-232 Transceiver
R
R
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CC
c
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e
2 -
2
5
3
1
v i
3
e
2
s r
C
1
4
4
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Now Available in Lead Free Packaging
e
l a
n
s r
s r
s r
s r
s t
A
SHUTDOWN
U
i C
T
O
c r
ONLINE
Y
Y
Y
T 5 OUT
N
T 2 OUT
T 3 OUT
T 4 OUT
O
T 1 OUT
E
E
E
u
R 1 IN
R3IN
N
R 2 IN
O
GND
C2+
S
S
S
C2-
L -
t i
V-
y r
N I
10
11
12
13
14
E
1
2
3
4
5
6
7
8
9
®
SP3238E
© Copyright 2005 Sipex Corporation
T
SP3238E
T
L
Y
Y
Y
Y
3
28
27
26
25
24
22
20
19
18
17
16
15
23
21
DESCRIPTION
E
E
E
E
S -
S
S
S
S
C1+
T 1 IN
T 2 IN
T 3 IN
a t
V+
V
R 1 OUT
R 2 OUT
T 4 IN
R 1 OUT
STATUS
C1-
R 3 OUT
T 5 IN
CC
e t
N
P
. o
2
2
2
1
n i
6
0
8
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f o
s
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