®
SP3222E/3232E
True +3.0V to +5.5V RS-232 Transceivers
FEATURES
■ Meets true EIA/TIA-232-F Standards
from a +3.0V to +5.5V power supply
■ Minimum 120Kbps Data Rate Under Full
Load
■ 1µA Low-Power Shutdown with Receivers
Active (SP3222E)
■ Interoperable with RS-232 down to +2.7V
power source
■ Enhanced ESD Specifications:
±15kV Human Body Model
±15kV IEC1000-4-2 Air Discharge
±8kV IEC1000-4-2 Contact Discharge
EN
18 SHDN
1
C1+ 2
17 VCC
V+
3
16 GND
C1-
4
15
T1OUT
C2+
5
14
R1IN
C2-
6
13 R1OUT
12 T1IN
SP3222E
V-
7
T2OUT
8
11 T2IN
R2IN
9
10
R2OUT
DIP/SO
Now Available in Lead Free Packaging
Note: See page 6 for other pinouts
DESCRIPTION
The SP3222E/3232E series is an RS-232 transceiver solution intended for portable or handheld applications such as notebook or palmtop computers. The SP3222E/3232E series has
a high-efficiency, charge-pump power supply that requires only 0.1µF capacitors in 3.3V
operation. This charge pump allows the SP3222E/3232E series to deliver true RS-232
performance from a single power supply ranging from +3.3V to +5.0V. The SP3222E/3232E
are 2-driver/2-receiver devices. This series is ideal for portable or hand-held applications such
as notebook or palmtop computers. The ESD tolerance of the SP3222E/3232E devices are
over ±15kV for both Human Body Model and IEC1000-4-2 Air discharge test methods. The
SP3222E device has a low-power shutdown mode where the devices' driver outputs and
charge pumps are disabled. During shutdown, the supply current falls to less than 1µA.
SELECTION TABLE
MODEL
Power Supplies
RS-232
Drivers
RS-232
Receivers
External
Components
Shutdown
TTL
3-State
No. of
Pins
SP3222
+3.0V to +5.5V
2
2
4
Yes
Yes
18, 20
SP3232
+3.0V to +5.5V
2
2
4
No
No
16
Date: 8/22/05
SP3222E, SP3232E True +3.0 to +5.0V RS-232 Transceivers
1
© Copyright 2005 Sipex Corporation
