®
SP3223E/3243E
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
■
Minimum 120Kbps data rate under load
■
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
DESCRIPTION
The
SP3223E
and
3243E
products are RS-232 transceiver solutions intended for portable or
hand-held applications such as notebook and palmtop computers. The
SP3223E
and
3243E
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
SP3223E/
3243E
series to deliver compliant RS-232 performance from a single power supply ranging
from +3.3V to +5.0V. The
SP3223E
is a 2-driver/2-receiver device, and the
SP3243E
is a
3-driver/5-receiver device ideal for laptop/notebook computer and PDA applications.
The
SP3243E
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
Power Supplies
RS-232
Drivers
2
3
RS-232
Receivers
2
5
External
Components
4 capacitors
4 capacitors
AUTO ON-LINE
®
TTL 3-State
Circuitry
YES
YES
YES
YES
No. of
Pins
20
28
SP3223E
SP3243E
+3.0V to +5.5V
+3.0V to +5.5V
Applicable U.S. Patents - 5,306,954; and other patents pending.
Rev. 11/14/02
SP3223E +3.0V to +5.5V RS-232 Transceivers
© Copyright 2002 Sipex Corporation
1
SIPEX [ SIPEX CORPORATION ]
