SP3220 Ver la hoja de datos (PDF) - Signal Processing Technologies

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Fabricante

SP3220

+3.0V to +5.5V RS-232 Driver/Receiver Pair

Signal Processing Technologies 

®

SP3220

+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

■ ESD Specifications:

+2kV Human Body Model

DESCRIPTION

The SP3220 device is an RS-232 driver/receiver solution intended for portable or hand-held

applications such as notebook or palmtop computers. The SP3220 device has a high-

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

This charge pump allows the SP3220 device to deliver true RS-232 performance from a single

power supply ranging from +3.3V to +5.0V.

The SP3220 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. 6/25/03

VCC

+

C5 0.1µF

+

C1 0.1µF

+

C2 0.1µF

2 C1+

4 C1-

5 C2+

6 C2-

15

VCC

SP3220

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

SP3220 True +3.0 to +5.0V RS-232 Transceivers

1

© Copyright 2003 Sipex Corporation

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