MAX212EAG-T Maxim Integrated, MAX212EAG-T Datasheet

MAX212EAG-T

Manufacturer Part Number

MAX212EAG-T

Description

RS-232 Interface IC

Manufacturer

Maxim Integrated

Series

MAX212r

Datasheet

1.MAX212EWG-T.pdf (8 pages)

Specifications of MAX212EAG-T

Data Rate

120 Kbps

Operating Supply Voltage

3.3 V

Supply Current

1.5 mA

Operating Temperature Range

0 C to + 70 C

Mounting Style

SMD/SMT

Number Of I/os

3/5

Propagation Delay Time Ns

300 ns, 800 ns

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The MAX212 RS-232 transceiver is intended for 3V-pow-

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

faces where 3 drivers and 5 receivers are needed with

minimum power consumption. The operating voltage

range extends from 3.6V down to 3.0V while still main-

taining true RS-232 and EIA/TIA-562 voltage levels.

A 1µA typical shutdown mode reduces power con-

sumption, extending battery life in portable systems.

While shut down, all receivers can remain active or can

be disabled under logic control. This enables a system

incorporating the CMOS MAX212 to be in low-power

shutdown mode and monitor incoming RS-232 activity.

A guaranteed data rate of 120kbps provides compati-

bility with popular software for communicating with per-

sonal computers.

Three-state drivers on all receiver outputs are provided

so that multiple receivers, generally of different inter-

face standards, can be wire-ORed at the UART.

The MAX212 is available in both small-outline (SO) and

shrink-small-outline (SSOP) packages. The SSOP

package occupies less than half of the board area

required by the equivalent SO package.

________________________Applications

_______________Ordering Information

19-0162; Rev 2; 2/94

________________General Description

* Dice are tested at T

™LapLink is a registered trademark of Traveling Software.

Call toll free 1-800-998-8800 for free samples or literature.

MAX212CWG

MAX212CAG

MAX212C/D

MAX212EWG

MAX212EAG

MAX212EVKIT-SSOP

PART

Computers

Printers

Peripherals

Instruments

EV KIT

Notebooks/Palmtops/Subnotebooks

________________________________________________________________ Maxim Integrated Products

-40°C to +85°C

= +25°C only.

TEMP. RANGE

0°C to +70°C

TEMP. RANGE

0°C to +70°C

PIN-PACKAGE

24 Wide SO

24 SSOP

Dice*

24 Wide SO

24 SSOP

BOARD TYPE

Surface Mount

+3V-Powered, Low-Power,

True RS-232 Transceiver

____________________________Features

SUPERIOR TO BIPOLAR:

___________Typical Operating Circuit

Operates from Single +3.0V to +3.6V Supply

24-Pin SSOP or Wide SO Packages

Meets All EIA/TIA-232E & EIA/TIA-562

Specifications

3mA Max Supply Current (Unloaded)

1µA Low-Power Shutdown Mode

All Receivers Active During Low-Power Shutdown

Mouse Compatible at 3.0V

Low-Cost, Surface-Mount External Components

120kbps Guaranteed Data Rate—LapLink™

Compatible

Three-State Receiver Outputs

Evaluation Kit Available

Flow-Through Pinout

SHUTDOWN

+3.3V

ENABLE

V+

OUT

DC-DC CONVERTER

MAX212

GND

OUT

V-

Related parts for MAX212EAG-T

MAX212EAG-T Summary of contents

Page 1

... TEMP. RANGE MAX212CWG 0°C to +70°C MAX212CAG 0°C to +70°C MAX212C/D 0°C to +70°C MAX212EWG -40°C to +85°C MAX212EAG -40°C to +85°C * Dice are tested +25°C only KIT TEMP. RANGE MAX212EVKIT-SSOP 0°C to +70°C ™LapLink is a registered trademark of Traveling Software. ...

Page 2

Low-Power, True RS-232 Transceiver ABSOLUTE MAXIMUM RATINGS Supply Voltages V .....................................................................-0.3V to +4. ............................................................(V V- ........................................................................-7.4V to +2.0V LN ..............................................................-0.3V to (V+ + 1.0V) LP.......................................................(V- - 1.0V) to (V+ + 0.3V) Input Voltages – — ...

Page 3

TIMING CHARACTERISTICS (V = 3.0V to 3.6V unless otherwise noted MIN MAX PARAMETER SYMBOL Data Rate Receiver Output Enable Time t ER Receiver Output Disable Time t DR Transmitter Output Enable Time ...

Page 4

Low-Power, True RS-232 Transceiver ____________________________Typical Operating Characteristics (continued 3.3V +25°C, unless otherwise noted SUPPLY POWER vs. SUPPLY VOLTAGE 180 120kbps 160 ALL TRANSMITTERS AT SPECIFIED DATA RATES w/ 2500pF AND 3k LOADS 140 ...

Page 5

1N6050 15 H 1N6050 0. +3. +3.3V TO ±6.5V C3 DC-DC CONVERTER 0. MAX212 SHUTDOWN ...

Page 6

Low-Power, True RS-232 Transceiver Operating Modes – — and EN determine the operation of the MAX212 as follows: – — RECEIVER DRIVER DC- OUTPUTS OUTPUTS CONVERTER L L High-Z High Enabled High-Z ...

Page 7

TRANSMITTER OUTPUT VOLTAGE vs. LOAD CURRENT PER TRANSMITTER 6 T1 AND T2 OUT OUT 4 T1 AND T2 = GND 3.0V OUT OUT OUT ALL LOADED ...

Page 8

... 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. 8 ___________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 © 1993 Maxim Integrated Products ...

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