Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50)668-707 • www.exar.com

SP3223E/EB/EU_0_06272

SP3223E/EB/EU

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

FEATURES

• Meets true EIA/TIA-232-F Standards

from a +3.0V to +5.5V power supply

• Interoperable with EIA/TIA-232 and

adheres to EIA/TIA-562 down to a +2.7V

power source

wakes up from a µA shutdown

• Minimum 250Kbps data rate under load

(EB)

•  Mbps data rate for high speed RS-232

(EU)

• Regulated Charge Pump Yields Stable

RS-232 Outputs Regardless of V

CC

Variations

• ESD Specifications:

+5KV Human Body Model

+5KV IEC6000-4-2 Air Discharge

+8KV IEC6000-4-2 Contact Discharge

DESCRIPTION

SELECTION TABLE

Now Available in Lead Free Packaging

V-

1

2

3

4

17

18

19

20

5

6

7

16

15

14

SHUTDOWN

C1+

V+

C1-

C2+

C2-

ONLINE

EN

R

GND

Vcc

T

STATUS

8

9

10

11

12

13

R

R

SP3223E

T

T

T

R

The

SP3223 products are RS-232 transceiver solutions intended for portable applications

such as notebook and hand held computers. These products use an internal high-efficiency,

charge-pump power supply that requires only 0.µF capacitors in 3.3V operation. This charge

pump and

Exar's driver architecture allow the SP3223 series to deliver compliant RS-232

performance from a single power supply ranging from +3.3V to +5.0V. The

SP3223 is a 2-

driver/2-receiver device ideal for laptop/notebook computer and PDA applications.

down state when an RS-232 cable is connected and a connected peripheral is turned on.

Otherwise, the device automatically shuts itself down drawing less than µA.

Device

Power

Supplies

RS- 232

Drivers

RS-232

Receivers

AUTO ON-LINE ®

TTL

3-state

Data Rate

(kbps)

SP3223E

+3.0V to +5.5V

2

2

YES

YES

20

SP3223EB +3.0V to +5.5V

2

2

YES

YES

250

SP3223EU +3.0V to +5.5V

2

2

YES

YES

000