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

SP3203E_00_2080

SP3203E

3V RS-232 Serial Transceiver with Logic

Selector and 15kV ESD Protection

FEATURES

• 3 Driver / 2 Receiver Architecture

• Logic selector function (V

input/output levels for mixed logic

systems

• 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

• Minimum 250Kbps data rate under load

• 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

• Applications

• Palmtops

• Cell phone Data Cables

• PDA's

DESCRIPTION

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-

T

GND

Vcc

T

R

8

9

10

11

12

13

R

R

SP3203E

T

R

V

L

T

T

T

The

SP3203E provides a RS-232 transceiver solution for portable and hand-held applications

such as palmtops, PDA's and cell phones. The

SP3203E uses an internal high-efficiency,

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

charge pump and

Exar's driver architecture allow the SP3203E to deliver compliant RS-232

performance from a single power supply ranging from +3.0V to +5.5V.

The

SP3203E is a 3-driver/2-receiver device, with a unique V

and output logic levels to allow inter operation in mixed-logic voltage systems such as PDA's

and cell phones. Receiver outputs will not exceed V

are scaled by the magnitude of the V