SP3223U Datasheet, PDF (1/24 Pages) Sipex Corporation – High Speed Intelligent +3.0V to +5.5V RS-232 Transceivers

®
SP3223U/3243U
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
■ ESD Specifications:
+2kV Human Body Model
■ 1000 Kbps minimum transmission rate
■ Ideal for High Speed RS-232 Applications
EN 1
C1+ 2
V+ 3
C1- 4
C2+ 5
C2- 6
V- 7
T₂OUT 8
R₂IN 9
R₂OUT 10
20 SHUTDOWN
19 VCC
18 GND
17 T₁OUT
SP3223U 16 R₁IN
15 R₁OUT
14 ONLINE
13 T₁IN
12 T₂IN
11 STATUS
Now Available in Lead Free Packaging
DESCRIPTION
The SP3223U and SP3243U 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 SP3223/
SP3243 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 SP3223U and SP3243U 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 SP3223U/SP3243U series to deliver compliant RS-
232 performance from a single power supply ranging from +3.0V to +5.5V. The SP3223U is a 2-driver/
2-receiver device, and the SP3243U is a 3-driver/5-receiver device, ideal for laptop/notebook computer
and PDA applications. The SP3243U 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 RS-232
External
Auto-Online TTL 3-State No. of
Drivers Receivers Components
Circuitry
Pins
SP3223U +3.0V to +5.5V
2
2
4 capacitors
YES
YES
20
SP3243U +3.0V to +5.5V
3
5
4 capacitors
YES
YES
28
Applicable U.S. Patents - 5,306,954; and other patents pending.
Date: 5/25/04
SP3223U/3243U +3.0V to +5.5V RS-232 Transceivers
1
© Copyright 2004 Sipex Corporation