1

Rev M 10/9/06

© Copyright 2006 Sipex Corporation

The SP3244E/3245E is a 3-driver/5-receiver device ideal for mobile phone, consumer and PDA

applications. These devices use an internal high-efficiency, charge-pump power supply that requires

only 0.1µF capacitors for 3.3V single-supply operation. This charge pump and Sipex’s driver archi-

tecture allow the SP3244E/3245E to deliver compliant RS-232 performance from a power supply

ranging from +3.0V to +5.5V. At voltages between +2.7V and +3.0V the driver outputs are compliant

with RS-562 and can interface to RS-232 in portable applications.

mode if all receiver and driver inputs have been idle for 30 seconds. The device will “wake-up” from

this automatic shutdown state upon detecting activity. This power saving feature functions without

system intervention or modifications to software or drivers.

SP3244E supports serial data rates of 250kbps minimum under full load and while maintaining

slew rates of less than 30V/µs. SP3245E is capable of high speed communication of up to 1Mbps.

DESCRIPTION

FEATURES

APPLICATIONS

• Portable RS-232

• Laptops and handheld PCs and PDA

• Cellular telephones, datacables, chargingcradles

• Diagnostic/upload ports on embedded applications

• Use in conjunction with low-voltage UART or

microcontroller

• SP3244E is cross-compatible with MAX3244E,

ICL3244E

• SP3245E is cross-compatible with MAX3245E,

ICL3245E

SP3244E-SP3245E

3.0V to 5.5V RS-232 Transceivers with Auto On-Line® Plus

• Contains 3-Drivers and 5-Receivers;

Single-chip DTE (PC or terminal) serial port transceiver

• SP3244E slew-controlled to 250Kbps under load

• SP3245E 1Mbps data rate for high-speed RS-232

• Meets true EIA/TIA-232-F and ITU V.28 standards

from a +3.0V to +5.5V power supply

• Adheres to EIA/TIA-562 for interoperability

with EIA/TIA-232 down to a +2.7V supply voltage

• Regulated charge pump yields stable RS-232

• ESD Specifications:

±

15KV Human Body Model

±

15KV IEC1000-4-2 Air Discharge

±

8KV IEC1000-4-2 Contact Discharge

SP3244E

SP3245E

1

2

3

4

5

6

7

8

9

10

11

12

13

14

28

27

26

25

24

23

22

21

20

19

18

17

16

15

C2+

C2-

V-

C1+

V+

GND

C1-

ONLINE

SHUTDOWN

STATUS