SP3232ET Просмотр технического описания (PDF) - Signal Processing Technologies

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SP3232ET

True +3.0V to +5.5V RS-232 Transceivers

Signal Processing Technologies 

®

SP3222/3232E

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

■ Minimum 120Kbps Data Rate Under Full

Load

■ 1µA Low-Power Shutdown with Receivers

Active (SP3222)

■ 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

DESCRIPTION

The SP3222/3232E series is an RS-232 transceiver solution intended for portable or hand-

held applications such as notebook or palmtop computers. The SP3222/3232E series has a

high-efficiency, charge-pump power supply that requires only 0.1µF capacitors in 3.3V

operation. This charge pump allows the SP3222/3232E series to deliver true RS-232

performance from a single power supply ranging from +3.3V to +5.0V. The SP3222/3232E

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 SP3222/3232E devices are

over ±15kV for both Human Body Model and IEC1000-4-2 Air discharge test methods. The

SP3222 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

SP3222

SP3232

+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. 07/01/03

SP3222/3232E True +3.0 to +5.0V RS-232 Transceivers

1

© Copyright 2003 Sipex Corporation

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