Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsInterface ICsInterface IC - transceivers RS232 1/1 SOIC 8 N

General Description

The MAX3314 is a ±5V powered EIA/TIA-232-compati-

ble interface. It has one transmitter and one receiver in

a flow-through architecture. The transmitter has a low-

dropout output stage providing minimum RS-232-com-

patible ±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 sup-

ply 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

RIN

TOUTTIN

GND

V-SHDN

ROUT

SOT23/µMAX/SO

TOP VIEW

MAX3314

Pin Configuration

BYPASS

0.1µF

5kΩ

SHDN

V-

TOUT

RIN

TIN

ROUT

GND

+5V

MAX3314

CAPACITORS MAY BE POLARIZED OR UNPOLARIZED.

-5V

0.1µF

Typical Operating Circuit

19-1725; Rev 1a; 3/01

Ordering Information

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

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.

Summary of content (6 pages)

PAGE 1
9-1725; Rev 1a; 3/01 460kbps, 1µA, RS-232-Compatible Transceiver Features ♦ 1µA Low-Power Shutdown with Receiver Active ♦ 30µA Operating Supply Current ♦ 460kbps (min) Data Rate ♦ 8-Pin SOT23 Package ♦ RS-232-Compatible Levels Ordering Information Digital Cameras PART MAX3314CKA MAX3314CUA MAX3314CSA MAX3314EKA MAX3314EUA TEMP.
PAGE 2
MAX3314 460kbps, 1µA, RS-232-Compatible Transceiver ABSOLUTE MAXIMUM RATINGS VCC 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.........................................................
PAGE 3
460kbps, 1µA, RS-232-Compatible Transceiver (VCC = +5V, V- = -5V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) PARAMETER SYMBOL Maximum Data Rate CONDITIONS MIN RL = 3kΩ, CL =1000pf, transmitter switching TYP UNITS kbps tPLH Receiver input to receiver output, CL = 150pF 0.15 tPHL Receiver input to receiver output, CL = 150pF 0.
PAGE 4
MAX3314 460kbps, 1µA, RS-232-Compatible Transceiver Detailed Description RS-232-Compatible Drivers The transmitter is an inverting level translator that converts CMOS-logic levels to EIA/TIA-232-compatible levels. It guarantees data rates up to 460kbps with worst-case loads of 3kΩ in parallel with 1000pF. When SHDN is driven low, the transmitter is disabled and put into 3-state mode. The transmitter input does not have a pull-up resistor. Connect to ground if unused. 5V/div 0 SHDN TIN = GND 1.
PAGE 5
460kbps, 1µA, RS-232-Compatible Transceiver Figure 3. Loopback Test Results at 120kbps TIN TOUT TOUT ROUT ROUT MAX3314 5µs/div TIN 2µs/div Figure 4.
PAGE 6
MAX3314 460kbps, 1µA, RS-232-Compatible Transceiver SOT23, 8L.EPS SOICN.EPS Package Information (continued) 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.