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

SP385E_100_030811

1

SP385E

Enhanced +3V or +5V RS-232 Line Driver/Receiver

Exar's SP385E is an enhanced version of the SP200 family of RS-232 line drivers/receivers. The

SP385E offers +3.3V operation for EIA-562 and EIA-232 applications. The SP385E features offered

maintains the same performance features offered in its predecessors. The SP385E is available in

plastic SOIC or SSOP packages operating over the commercial and industrial temperature ranges.

The SP385E is pin compatible to the LTC1385 EIA-562 transceiver with the exception that the drivers

are disabled with the ON/OFF pin.

FEATURES

■ Operates from 3.3V or 5V Power Supply

■ Meets all EIA-232D and V.28 Specifica-

tions at 5V.

■ Meets EIA-562 Specifications at 3.3V

■ Two Drivers and Receivers

■ Operates with 0.1µF to 10µF Capacitors

■ High data rate - 120kbps Under Load

■ Low Power Shutdown ≤ 1µA

■ 3-State TTL/CMOS Receiver Outputs

■ Low Power CMOS - 5mA Operation

■ Improved ESD Specifications:

+15kV Human Body Model

+15kV IEC61000-4-2 Air Discharge

+8kV IEC61000-4-2 Contact Discharge

DESCRIPTION

TyPICAL APPLICATION CIRCUIT

Now Available in Lead Free Packaging

ON/OFF

V

GND

T OUT

R IN

R OUT

T IN

T IN

R OUT

N/C

C +

V+

C -

C +

C -

V-

T OUT

R IN

2

1

2

3

4

5

6

7

8

9

18

17

16

15

14

13

12

11

10

1

1

CC

2

2

2

1

2

2

1

1

1

TTL/CMOS INPUTS

RS232 OUTPUTS

TTL/CMOS OUTPUTS

RS232 INPUTS

Charge

Pump