________________General Description

The MAX3384E is a 3V-powered EIA/TIA-232 and

V.28/V.24 communications interface with low power

requirements, high data-rate capabilities, and en-

hanced electrostatic discharge (ESD) protection. All

transmitter outputs and receiver inputs are protected to

±15kV using IEC 1000-4-2 Air-Gap Discharge, ±8kV

using IEC 1000-4-2 Contact Discharge, and ±15kV

using the Human Body Model.

The transceiver has a proprietary low-dropout transmit-

ter output stage, delivering true RS-232 performance

from a +3.0V to +5.5V supply with a dual charge pump.

The charge pump requires only four small 0.1µF capac-

itors for operation from a +3.3V supply. Each device is

guaranteed to run at data rates of 250kbps while main-

taining RS-232 output levels.

The MAX3384E has two receivers and two drivers. It

features a 1µA shutdown mode that reduces power con-

sumption and extends battery life in portable systems.

The MAX3384E is available in a space-saving SSOP

package in either the commercial (0°C to +70°C) or

extended temperature (-40°C to +85°C) range.

________________________Applications

Hand-Held Equipment

Battery-Powered

Peripherals

Equipment

Printers

PDAs

____________________________Features

o ESD Protection for RS-232 I/O Pins

±15kV—Human Body Model

±8kV—IEC 1000-4-2, Contact Discharge

±15kV—IEC 1000-4-2, Air-Gap Discharge

o Latchup Free

o 300µA Supply Current

o 1µA Low-Power Shutdown

o 250kbps Guaranteed Data Rate

o 250µs Time to Exit Shutdown with 3kΩ Load on V+

o 6V/µs Guaranteed Slew Rate

o Transmitter and Receiver Outputs High

Impedance in Shutdown

o Meets EIA/TIA-232 Specifications Down to 3.0V

±15kV ESD-Protected, 3.0V to 5.5V, Low-Power,

up to 250kbps, True RS-232 Transceiver

________________________________________________________________ Maxim Integrated Products

1

20

19

18

17

16

15

14

13

1

2

3

8

12

11

10

4

5

6

7

SHDN

GND

T1OUT

C1-

V+

C1+

N.C.

R1IN

R1OUT

T2IN

R2OUT

T2OUT

V-

C2-

C2+

9

R2IN

N.C.

SSOP

T1IN

N.C.

MAX3384E

TOP VIEW

MAX3384E

R2OUT

R1OUT

R2IN

GND

RS-232

OUTPUTS

TTL/CMOS

INPUTS

T2IN

T1IN

C2-

C2+

C1-

C1+

R1IN

T2OUT

T1OUT

V-

V+

C1

0.1

µF

C2

0.1

µF

+3.3V

RS-232

INPUTS

TTL/CMOS

OUTPUTS

5k

5k

SHDN

C3

*

0.1

µF

C4

0.1

µF

NOTE: SEE TABLE 2 FOR CAPACITOR SELECTION

Pin Configurations

19-1949; Rev 0; 1/01

Typical Operating Circuit

Ordering Information

PART

MAX3384ECAP

MAX3384EEAP

-40°C to +85°C

0°C to +70°C

TEMP. RANGE

PIN-PACKAGE

20 SSOP

20 SSOP

For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

MAX3384ECWN

0°C to +70°C

18 SO

Pin Configurations continued at end of data sheet.