SP3220B Datasheet, PDF (1/18 Pages) Sipex Corporation – High Speed +3.0V to +5.5V RS-232 Driver/Receiver Pair

®
SP3220B/U
High Speed +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 250 Kbps Data Rate
(SP3220B) or 1Mbps Data Rate
(SP3220U) under Fully Load
■ 1µA Low-Power Shutdown With
Receivers Active
■ Interoperable With EIA/TIA - 232 and
adheres to EIA/TIA - 562 Down to
+2.7V Power Source
■ Pin-Compatible With The
MAX3221E Device Without
The AUTO ON-LINE^® Feature
■ ESD Specifications:
+2kV Human Body Model
DESCRIPTION
The SP3220B/U device is an RS-232 driver/receiver solution intended for portable or hand-held
applications such as notebook or palmtop computers. The SP3220B/U device has a high-
efficiency, charge-pump power supply that requires only 0.1µF capacitors in 3.3V operation. This
charge pump allows the SP3220B/U device to deliver true RS-232 performance from a single
power supply ranging from +3.3V to +5.0V.
The SP3220B/U 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.
Rev. 7/8/03
VCC
+
C5 0.1µF
+
C1 0.1µF
+
C2 0.1µF
2 _C1+
15
VCC
4 C1-
5 C2+ _SP3220B/U
6 C2-
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
SP3220B/U +3.0 to +5.0V RS-232 Transceivers
1
© Copyright 2003 Sipex Corporation