®
SP3223EU/3243EU
High Speed Intelligent +3.0V to +5.5V
RS-232 Transceivers
■
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
®
circuitry automatically
wakes up from a 1µA shutdown
■
Regulated Charge Pump Yields Stable
RS-232 Outputs Regardless of V
CC
Variations
■
Enhanced ESD Specifications:
+15kV Human Body Model
+15kV IEC1000-4-2 Air Discharge
+8kV IEC1000-4-2 Contact Discharge
■
1000 Kbps minimum transmission rate
■
Ideal for High Speed RS-232 Applications
EN
1
20 SHUTDOWN
19 V
CC
18 GND
17
SP3223EU 16
T
1
OUT
R
1
IN
C1+ 2
V+
C1-
C2+
C2-
V-
T
2
OUT
R
2
IN
3
4
5
6
7
8
9
15 R
1
OUT
14
ONLINE
13 T
1
IN
12 T
2
IN
11
STATUS
R
2
OUT 10
Now Available in Lead Free Packaging
DESCRIPTION
The SP3223EU and 3243EU products are RS-232 transceiver solutions intended for portable or hand-
held applications such as notebook and palmtop computers. The "U" series is based on Sipex's
SP3223E/3243E series and has been enhanced for high speed. The data rate is improved to 1000kbps,
easily meeting the demands of high speed RS-232 applications. The SP3223EU and 3243EU use 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 SP3223EU/3243EU series to
deliver compliant RS-232 performance from a single power supply ranging from +3.0V to +5.5V. The
SP3223EU is a 2-driver/2-receiver device, and the SP3243EU is a 3-driver/5-receiver device, ideal for
laptop/notebook computer and PDA applications. The SP3243EU 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
®
feature allows the device to automatically "wake-up" during a shutdown 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.
SELECTION TABLE
Device
SP3223EU
SP3243EU
Power Supplies
+3.0V to +5.5V
+3.0V to +5.5V
RS-232
Drivers
2
3
RS-232
Receivers
2
5
External
Components
4 capacitors
4 capacitors
Auto-Online
Circuitry
YES
YES
TTL 3-State
YES
YES
No. of
Pins
20
28
Applicable U.S. Patents - 5,306,954; and other patents pending.
Date: 06/28/04
SP3223EU/3243EU +3.0V to +5.5V RS-232 Transceivers
© Copyright 2004 Sipex Corporation
1
SIPEX [ SIPEX CORPORATION ]
