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SP3222H

3.3V, 460 Kbps RS-232 Transceivers

Signal Processing Technologies 

®

SP3222H/3232H

3.3V, 460 Kbps RS-232 Transceivers

■ Meets true EIA/TIA-232-F Standards

from a +3.0V to +5.5V power supply

■ Interoperable with RS-232 down to +2.7V

power source

■ 1µA Low-Power Shutdown with Receivers

Active (SP3222H)

■ Enhanced ESD Specifications:

+2kV Human Body Model

■ 460Kbps Minimum Transmission Rate

■ Ideal for Handheld, Battery Operated

Applications

DESCRIPTION

The SP3222H and the 3232H are 2 driver/2 receiver RS-232 transceiver solutions intended

for portable or hand-held applications such as notebook or palmtop computers.

Their data transmission rate of 460Kbps meeting the demands of high speed RS-232

applications. Both ICS have a high-efficiency, charge-pump power supply that requires only

0.1µF capacitors for 3.3V operation. The charge pump allows the SP3222H and the 3232H

series to deliver true RS-232 performance from a single power supply ranging from +3.3V

to +5.0V.

The SP3222H device has a low-power shutdown mode where the devices' driver outputs and

charge pumps are disabled. During shutdown, the supply current is less than 1µA.

SELECTION TABLE

MODEL Power Supplies

SP3222H

SP3232H

+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. 6/27/03

SP3222H/3232H 3.3V, 460 Kbps RS-232 Transceivers

1

© Copyright 2003 Sipex Corporation

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