Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com

SP3220E_EB_EU_101_060311

1

SP3220E/EB/EU

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

The

SP3220E devices are RS-232 driver/receiver solutions intended for portable or hand-

held applications such as palmtop computers, intrumentation and consumer products. These

devices incorporate a high-efficiency, charge-pump power supply that allows the

SP3220E

devices to deliver true RS-232 performance from a single power supply ranging from +3.0V

to +5.0V. This charge pump requires only 0.1µF capacitors in 3.3V operation. The ESD toler-

ance of the these devices are over +/-15kV for both Human Body Model and IEC61000-4-2

Air discharge test methods. All devices have a low-power shutdown mode where the driver

outputs and charge pumps are disabled. During shutdown, the supply current falls to less

than 1µA.

FEATURES

■ Meets all EIA/TIA-232-F Standards

from a +3.0V to +5.5V power supply

• Interoperable with RS-232 and V.28 at +2.7V

■ Supports High Serial Data Rates:

• 120kbps SP3220E

• 250kbps SP3220EB

• 1Mbps SP3220EU

■ 1µA Low Power Shutdown Mode

■ Footprint Compatible with MAX3221E, ISL3221

■ 4 x 1.0µF External Charge Pump Capacitors

■ Improved ESD Specifications:

+15kV Human Body Model

+15kV IEC61000-4-2 Air Discharge

+8kV IEC61000-4-2 Contact Discharge

DESCRIPTION

SELECTION TABLE

Now Available in Lead Free Packaging

V-

1

2

3

4

13

14

15

16

5

6

7

12

11

10

C1+

V+

C1-

C2+

C2-

R1IN

GND

T1OUT

No Connect

8

9

SP3220

E/EB/EU

T1IN

No Connect

R1OUT

EN

SHDN

MODEL

Power

Supplies

RS-232

Drivers

RS-232

Receivers

External

Components

Shutdown

Data Rate

SP3220E

+3.0V to +5.5V

1

1

4 Capacitors

Yes

120kbps

SP3220EB

+3.0V to +5.5V

1

1

4 Capacitors

Yes

250kbps

SP3220EU +3.0V to +5.5V

1

1

4 Capacitors

Yes

1Mbps