MAXIM MAX3314 User Manual

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General Description

The MAX3314 is a ±5V powered EIA/TIA-232-compati­ble interface. It has one transmitter and one receiver in
a flow-through architecture. The transmitter has a low­dropout output stage providing minimum RS-232-com­patible ±3.7V output levels while driving 3kΩ and
1000pf at 460kbps. Both +5V and -5V are supplied
externally.

The MAX3314 has a SHDN function that reduces sup­ply current to 1µA. The transmitter is disabled and put
into 3-state mode while the receiver remains active.

The MAX3314 is available in 8-pin SOT23, µMAX and
SO packages.

________________________Applications

Digital Cameras

PDA

GPS

POS

Telecommunications

Handy Terminals

Set-Top Boxes

Features

♦ 1µA Low-Power Shutdown with Receiver Active

♦ 30µA Operating Supply Current

♦ 460kbps (min) Data Rate

♦ 8-Pin SOT23 Package

♦ RS-232-Compatible Levels

MAX3314

460kbps, 1µA, RS-232-Compatible Transceiver

________________________________________________________________ Maxim Integrated Products 1

Pin Configuration

C

BYPASS

0.1µF

2

7

1

8

5

5kΩ

6

4

3

SHDN

V-

TOUT

RIN

TIN

ROUT

V

CC

GND

+5V

MAX3314

CAPACITORS MAY BE POLARIZED OR UNPOLARIZED.

-5V

0.1µF

Typical Operating Circuit

19-1725; Rev 1a; 3/01

Ordering Information

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.

PART TEMP. RANGE PIN-PACKAGE
MAX3314CKA 0°C to +70°C 8 SOT23
MAX3314CUA 0°C to +70°C 8 µMAX

MAX3314CSA 0°C to +70°C 8 SO
MAX3314EKA -40°C to +85°C 8 SOT23
MAX3314EUA -40°C to +85°C 8 µMAX

MAX3314ESA -40°C to +85°C 8 SO

TOP VIEW

1

V

CC

2

3

ROUT

4

SOT23/µMAX/SO

MAX3314

87GND

6

5

V-SHDN

RIN

TOUTTIN

MAX3314

460kbps, 1µA, RS-232-Compatible Transceiver

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VCC= +5V, V- = -5V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.

Note 1: Not tested—guaranteed by design.

V

CC

to GND..............................................................-0.3V to +6V

V- to GND .................................................................+0.3V to -6V

Input Voltages

TIN, SHDN to GND ..............................................-0.3V to +6V

RIN to GND .....................................................................±25V

Output Voltages

TOUT to GND...............................................................±13.2V

ROUT .................................................…-0.3V to (V

CC

+ 0.3V)

Short-Circuit Duration

TOUT to GND ........................................................Continuous

Continuous Power Dissipation

8-Pin SOT23 (derate 9.7mW/°C above +70°C)...........777mW

8-Pin µMAX (derate 4.1mW/°C above +70°C) ............300mW

8-Pin SO (derate 5.88mW/°C above +70°C)...............471mW

Operating Temperature Ranges

MAX3314C_A.....................................................0°C to +70°C

MAX3314E_A..................................................-40°C to +85°C

Junction Temperature.....................................................+150°C

Storage Temperature Range ............................-65°C to +150°C

Lead Temperature (soldering, 10s) ................................+300°C

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

DC CHARACTERISTICS
Positive Supply Operating

Range

Negative Supply Operating

Range

Positive Supply Current SHDN = V
Negative Supply Current SHDN = V

V

CC

4.75 5 5.25 V

V- -4.75 -5 -5.25 V

CC

CC

Shutdown Supply Current SHDN = GND 1 10 µA
LOGIC INPUTS (TIN, SHDN)
Input Logic Threshold Low V
Input Logic Threshold High V

IL

IH

0.8 V

2.4 V
Transmitter Input Hysteresis 0.5 V
Input Leakage Current ±0.01 µA
RECEIVER OUTPUT
Output Voltage Low V

Output Voltage High V

OL

OH

I

= 1.6mA 0.4 V

OUT

I

= -1.0mA

OUT

RECEIVER INPUT
Input Threshold Low V
Input Threshold High V

IL

IH

0.8 V

2.4 V
Input Hysteresis 0.5 V
Input Resistance 5 kΩ
TRANSMITTER OUTPUT

Transmitter output loaded with 3kΩ to

Output Voltage Swing

Output Resistance (Note 1) V

ground

= V- = 0, transmitter output = ±2V 300 Ω

CC

Output Short-Circuit Current ±60 mA
Output Leakage Current V

= ±12V, transmitter disabled

OUT

, no load 30 100 µA
, no load 15 30 µA

V

CC

- 0.3

V

CC

- 0.1

V

±3.7 V

25

µA