MAX3380EEUP+ Maxim Integrated Products, MAX3380EEUP+ Datasheet

MAX3380EEUP+

Manufacturer Part Number

MAX3380EEUP+

Description

IC TXRX RS232 460KBPS 20TSSOP

Manufacturer

Maxim Integrated Products

Type

Transceiverr

Datasheet

1.MAX3380ECUP.pdf (14 pages)

Specifications of MAX3380EEUP+

Number Of Drivers/receivers

2/2

Protocol

RS232

Voltage - Supply

2.4 V ~ 5.5 V

Mounting Type

Surface Mount

Package / Case

20-TSSOP

Propagation Delay Time Ns

0.15 us

Operating Supply Voltage

2.5 V to 5 V

Supply Current

0.3 mA

Operating Temperature Range

- 40 C to + 85 C

Data Rate

460 Kbps

Mounting Style

SMD/SMT

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

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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

Related parts for MAX3380EEUP+

MAX3380EEUP+ Summary of contents

Page 1

... Cell Phone Data Lump Cables PDA Data Lump Cables GPS Receivers Digital Cameras AutoShutdown Plus is a trademark of Maxim Integrated Products Pin Configuration appears at end of data sheet. ________________________________________________________________ Maxim Integrated Products 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. ...

Page 2

RS-232 Transceivers with ±15kV ESD-Protected I/O and Logic Pins ABSOLUTE MAXIMUM RATINGS V to GND ...........................................................-0.3V to +6. GND..............................................................-0.3V to +6. GND .............................................................-0.3V to +7. GND ..............................................................+0.3V ...

Page 3

RS-232 Transceivers with ±15kV ESD-Protected I/O and Logic Pins ELECTRICAL CHARACTERISTICS (continued +2.35V to +5.5V +1.65V to +5.5V. When 0.33µ ...

Page 4

RS-232 Transceivers with ±15kV ESD-Protected I/O and Logic Pins TIMING CHARACTERISTICS (V = +2.35V to +5.5V +1.65V to +5.5V. When 0.33µ ...

Page 5

RS-232 Transceivers with ±15kV ESD-Protected I/O and Logic Pins ( +4.2V 0.22µ 1µ 0.1µF parallel with 47µ ...

Page 6

RS-232 Transceivers with ±15kV ESD-Protected I/O and Logic Pins PIN NAME 1 C1+ Positive Terminal of Voltage-Doubler Charge-Pump Capacitor 2 V+ +5.5V/+4.0V Generated by the Charge Pump 3 C1- Negative Terminal of Voltage-Doubler Charge-Pump Capacitor ...

Page 7

RS-232 Transceivers with ±15kV ESD-Protected I/O and Logic Pins Voltage Generation in the Switchover Region The MAX3380E/MAX3381E include a switchover circuit between RS-232-compliant and RS-232-compatible modes that has approximately 400mV of hysteresis around the switchover ...

Page 8

RS-232 Transceivers with ±15kV ESD-Protected I/O and Logic Pins Table 1. AutoShutdown Plus Truth Table OPERATION FORCEON STATUS Shutdown X (Forced Off) Normal Operation 1 (Forced On) Normal Operation (AutoShutdown 0 Plus) Shutdown (AutoShutdown 0 ...

Page 9

RS-232 Transceivers with ±15kV ESD-Protected I/O and Logic Pins EDGE T_IN FORCEOFF DETECT EDGE R_IN DETECT FORCEON Figure 2c. AutoShutdown Plus Logic TRANSMITTERS ENABLED, INVALID HIGH +2.7V INDETERMINATE +0.3V AutoShutdown, TRANSMITTERS DISABLED, 0 1μA SUPPLY ...

Page 10

RS-232 Transceivers with ±15kV ESD-Protected I/O and Logic Pins 1MΩ 1500Ω DISCHARGE CHARGE-CURRENT RESISTANCE LIMIT RESISTOR HIGH STORAGE VOLTAGE 100pF CAPACITOR DC SOURCE Figure 5a. Human Body ESD Test Model ...

Page 11

RS-232 Transceivers with ±15kV ESD-Protected I/O and Logic Pins to IEC 1000-4-2 are generally lower than that measured using the Human Body Model. Figure 6a shows the IEC 1000-4-2 model, and Figure 6b shows the ...

Page 12

RS-232 Transceivers with ±15kV ESD-Protected I/O and Logic Pins For Figure 9 and Figure 10, a single transmitter was dri- ven at 460kbps, and all transmitters were loaded with an RS-232 receiver in parallel with ...

Page 13

RS-232 Transceivers with ±15kV ESD-Protected I/O and Logic Pins V BATT CELL PHONE LOGIC LEVELS Tx RTS Rx CTS Figure 11. Typical Application Circuit Pin Configuration TOP VIEW C1 C1- ...

Page 14

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 14 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2001 Maxim Integrated Products Package Information (continued) PACKAGE OUTLINE, TSSOP 4 ...

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