19-0162; Rev 2; 2/94
TION KIT
EVALUA INCLUDED
ATION
INFORM
+3V-Powered, Low-Power,
True RS-232 Transceiver
____________________________Features
SUPERIOR TO BIPOLAR:
o Operates from Single +3.0V to +3.6V Supply
o 24-Pin SSOP or Wide SO Packages
o Meets All EIA/TIA-232E & EIA/TIA-562
Specifications
o 3mA Max Supply Current (Unloaded)
o 1µA Low-Power Shutdown Mode
o All Receivers Active During Low-Power Shutdown
o Mouse Compatible at 3.0V
o Low-Cost, Surface-Mount External Components
o 120kbps Guaranteed Data Rate—LapLink™
Compatible
o Three-State Receiver Outputs
o Evaluation Kit Available
o Flow-Through Pinout
___________Typical Operating Circuit
________________________Applications
Computers
Notebooks/Palmtops/Subnotebooks
Printers
Peripherals
Instruments
23
+3.3V
V+
3 V
CC
1
LN
2
14
LP
V-
DC-DC CONVERTER
SHUTDOWN
4
MAX212
SD
11 T1IN
T1OUT 17
T1
_______________Ordering Information
12 T2IN
PART
TEMP. RANGE
MAX212CWG
0°C to +70°C
24 Wide SO
MAX212CAG
MAX212C/D
MAX212EWG
MAX212EAG
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
24 SSOP
Dice*
24 Wide SO
24 SSOP
T2OUT 16
T2
PIN-PACKAGE
13 T3IN
T3OUT 15
T3
6 R1OUT
R1
7 R2OUT
R2
R1IN 22
R2IN 21
* Dice are tested at TA = +25°C only.
8 R3OUT
EV KIT
TEMP. RANGE
BOARD TYPE
MAX212EVKIT-SSOP
0°C to +70°C
R3
R3IN 20
Surface Mount
9 R4OUT
R4
10 R5OUT
R5
EN
ENABLE
5
R4IN 19
R5IN 18
GND
24
™LapLink is a registered trademark of Traveling Software.
________________________________________________________________ Maxim Integrated Products
Call toll free 1-800-998-8800 for free samples or literature.
1
MAX212
________________General Description
The MAX212 RS-232 transceiver is intended for 3V-powered EIA/TIA-232E and V.28/V.24 communication interfaces 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 maintaining true RS-232 and EIA/TIA-562 voltage levels.
A 1µA typical shutdown mode reduces power consumption, 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 compatibility with popular software for communicating with personal computers.
Three-state drivers on all receiver outputs are provided
so that multiple receivers, generally of different interface 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.
