SP3220E Datasheet, PDF (1/18 Pages) Sipex Corporation – +3.0V to +5.5V RS-232 Driver/Receiver Pair

®
SP3220E
+3.0V to +5.5V RS-232 Driver/Receiver Pair
■ Meets True RS-232 Protocol Operation
From A +3.0V to +5.5V Power Supply
■ Minimum 120 Kbps Data Rate Under
Full Load
■ 1µA Low-Power Shutdown With
Receivers Active
■ Interoperable With RS-232 Down To
+2.7V Power Source
■ Pin-Compatible With The
MAX3221E Device Without
The AUTO ON-LINE^® Feature
■ Enhanced ESD Specifications:
+15kV Human Body Model
+15kV IEC1000-4-2 Air Discharge
+8kV IEC1000-4-2 Contact Discharge
DESCRIPTION
The SP3220E device is an RS-232 driver/receiver solution intended for portable or hand-held
applications such as notebook or palmtop computers. The SP3220E device has a high-
efficiency, charge-pump power supply that requires only 0.1µF capacitors in 3.3V operation.
This charge pump allows the SP3220E device to deliver true RS-232 performance from a
single power supply ranging from +3.3V to +5.0V. The ESD tolerance of the SP3220E device
is over +15kV for both Human Body Model and IEC1000-4-2 Air discharge test methods.
The SP3220E device has a low-power shutdown mode where the driver outputs and charge
pumps are disabled. During shutdown, the supply current falls to less than 1µA.
VCC
+
C5 0.1µF
+
C1 0.1µF
+
C2 0.1µF
2 _C1+
4 C1-
5 C2+
6 C2-
15
VCC
SP3220E
3
V+
+
*C3 0.1µF
V- ⁷
C4 0.1µF
+
LOGIC
INPUTS
LOGIC
OUTPUTS
11 T1IN
9 R1OUT
1 EN
T1OUT 13
R1IN 8
5kΩ
SHDN 16
RS-232
OUTPUTS
RS-232
INPUTS
GND
14
*can be returned to
either VCC or GND
11/07/02
SP3220E True +3.0 to +5.0V RS-232 Transceivers
1
© Copyright 2000 Sipex Corporation