SP3222B Datasheet, PDF (1/18 Pages) Sipex Corporation – True +3.0V to +5.5V RS-232 Transceivers

®
SP3222B/3232B
True +3.0V to +5.5V RS-232 Transceivers
■ Meets true EIA/TIA-232-F Standards
from a +3.0V to +5.5V power supply
■ 250kbps Transmission Rate Under Load
■ 1µA Low-Power Shutdown with Receivers
Active (SP3222B)
■ Interoperable with RS-232 down to +2.7V
power source
■ ESD Specifications:
±2kV Human Body Model
DESCRIPTION
The SP3222B/3232B series is an RS-232 transceiver solution intended for portable or hand-
held applications such as notebook or palmtop computers. The SP3222B/3232B series has
a high-efficiency, charge-pump power supply that requires only 0.1µF capacitors in 3.3V
operation. This charge pump allows the SP3222B/3232B series to deliver true RS-232
performance from a single power supply ranging from +3.0V to +5.5V. The ESD tolerance
of the SP3222B/3232B devices are over ±15kV for both Human Body Model and IEC1000-
4-2 Air discharge test methods. The SP3222B 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
SP3222B
SP3232B
Power Supplies
+3.0V to +5.5V
+3.0V to +5.5V
RS-232
Drivers
2
2
RS-232
External
Receivers Components
2
4
2
4
Shutdown
Yes
No
TTL No. of
3-State Pins
Yes 18, 20
No
16
Rev. 6/30/03
SP3222B/3232B True +3.0 to +5.5V RS-232 Transceivers
1
© Copyright 2003 Sipex Corporation