Date: 8/30/05

SP3220E/EB/EU High ESD RS-232 Driver/Receiver

© Copyright 2005 Sipex Corporation



1

Date: 8/22/05

SP3220E/EB/EU High ESD RS-232 Driver/Receiver

© Copyright 2005 Sipex Corporation

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

SP3220E/EB/EU

DESCRIPTION

®

Available in Lead Free Packaging

■

Meets All EIA-232 and ITU V.28 Specifications

from a wide +3.0V to +5.5V power supply

●

Interoperable with RS232 and V.28 at 2.7V

■

Supports High Serial DataRates:

●

120 kbps SP3220E

●

250 kbps SP3220EB

●

1 Mbps

SP3220EU

■

1µA Low Power Shutdown Mode

■

Footprint Compatible with MAX3221E, ISL3221

■

4 x 0.1µF External Charge Pump Capacitors

■

Tri–State/Receiver Enable

■

Improved ESD Specifications:

●

+15kV Human Body Model

●

+15kV IEC1000-4-2 Air Discharge

●

+8kV IEC1000-4-2 Contact Discharge

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

applications such as palmtop computers, instrumentation 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

tolerance of these devices is over ±15kV for both Human Model and IEC1000-4-2 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.

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

SP3220

E/EB/EU

2

4

6

5

3

7

15

GND

T1IN

T1OUT

C1+

C1-

C2+

C2-

V+

V-

11

0.1µF

0.1µF

0.1µF

+

C2

C5

C1

+

+

*C3

C4

+

+

0.1µF

0.1µF

13

RS-232

OUTPUTS

RS-232

INPUTS

LOGIC

INPUTS

14

5k

R1IN

R1OUT

9

8

LOGIC

OUTPUTS

*can be returned to

EN

1

SHDN 16