MAX3381EEUP-T Maxim Integrated, MAX3381EEUP-T Datasheet

MAX3381EEUP-T

Manufacturer Part Number

MAX3381EEUP-T

Description

RS-232 Interface IC

Manufacturer

Maxim Integrated

Series

MAX3380E, MAX3381Er

Datasheet

1.MAX3381EEUP-T.pdf (14 pages)

Specifications of MAX3381EEUP-T

Data Rate

250 Kbps

Operating Supply Voltage

2.35 V to 5.5 V

Supply Current

1 mA

Operating Temperature Range

0 C to + 70 C

Mounting Style

SMD/SMT

Function

Transceiver

Maximum Operating Temperature

+ 85 C

Minimum Operating Temperature

- 40 C

Number Of Drivers

Number Of I/os

Number Of Receivers

Propagation Delay Time Ns

0.15 us

Shutdown

Yes

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+2.35V to +5.5V, 1µA, 2Tx/2Rx RS-232 Transceivers

The MAX3380E/MAX3381E are +2.35V to +5.5V-pow-

ered EIA/TIA-232 and V.28/V.24 communication inter-

faces with low power requirements, high data-rate

capabilities, and enhanced electrostatic discharge

(ESD) protection on both the TTL and RS-232 sides.

The MAX3380E/MAX3381E have two receivers and two

transmitters. All RS-232 inputs, outputs, and logic input

pins are protected to ±15kV using IEC 1000-4-2 Air-

Gap Discharge method and the Human Body Model,

and ±8kV using IEC 1000-4-2 Contact Discharge

method.

The proprietary low-dropout transmitter output stage

enables true RS-232 performance from a +3.1V to

+5.5V supply with a dual charge pump. The parts

reduce the transmitter output levels to RS-232-compati-

ble levels with no increase in supply current for sup-

plies less than +3.1V and greater than +2.35V. The

+2.35V to +5.5V operating range is fully compatible

with lithium-ion (Li+) batteries. The charge pump

requires only four small 0.1µF capacitors for operation.

The MAX3380E/MAX3381E transceivers use Maxim’s

revolutionary AutoShutdown Plus™ feature to auto-

m a t i c a l l y e n t e r a 1 µ A s h u t d o w n m o d e . T h e s e

devices shut down the on-board power supply and

drivers when they do not sense a valid signal transi-

tion for 30 seconds on either the receiver or trans-

mitter inputs.

The MAX3380E is capable of transmitting data at

rates of 460kbps while maintaining RS-232 output

levels, and the MAX3381E operates at data rates up

to 250kbps. The MAX3381E offers a slower slew rate

for applications where noise and EMI are issues. The

MAX3380E/MAX3381E have a unique V

allows interoperation in mixed-logic voltage systems

down to +1.65V. Both input and output logic levels

are referenced to the V

are available in a space-saving TSSOP package.

19-2128; Rev 0; 8/01

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

Pin Configuration appears at end of data sheet.

AutoShutdown Plus is a trademark of Maxim Integrated Products

Cell Phone Data Lump Cables

PDA Data Lump Cables

GPS Receivers

Digital Cameras

with ±15kV ESD-Protected I/O and Logic Pins

________________________________________________________________ Maxim Integrated Products

General Description

pin. The MAX3380E/MAX3381E

Applications

pin that

♦ ±15kV ESD Protection on All CMOS and RS-232

♦ Operates Over Entire Li+ Battery Range

♦ Low Logic Threshold Down to +1.65V for

♦ 1µA Low-Power AutoShutdown Plus Mode

♦ Compatible with Next-Generation GSM Data Rates

♦ 20-Pin TSSOP Package

TTL/CMOS

MAX3380ECUP

MAX3380EEUP

MAX3381ECUP

MAX3381EEUP

TTL/CMOS

Inputs and Outputs (Except INVALID)

Compatibility with Cell Phone Logic Supply Voltages

OUTPUTS

+3.3V

INPUTS

±15kV Human Body Model

±15kV IEC 1000-4-2 Air-Gap Discharge

±8kV IEC 1000-4-2 Contact Discharge

0.1μF

PART

0.1μF

Typical Operating Circuit

T1IN

C1+

C1-

C2-

T2IN

C2+

R2OUT

R1OUT

-40°C to +85°C

TEMP. RANGE

Ordering Information

0°C to +70°C

MAX3380E/

MAX3381E

GND

T1OUT

T2OUT

5kΩ

R1IN

R2IN

V+

V-

PIN-PACKAGE

20 TSSOP

Features

0.1μF

RS-232

INPUTS

RS-232

OUTPUTS

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