MAX3243ECWI Maxim, MAX3243ECWI Datasheet
MAX3243ECWI
Manufacturer Part Number
MAX3243ECWI
Description
15kV ESD-Protected / 1A / 3.0V to 5.5V / 250kbps / RS-232 Transceivers with AutoShutdown
Manufacturer
Maxim
Datasheet
1.MAX3243ECWI.pdf
(16 pages)
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The MAX3221E/MAX3223E/MAX3243E are 3V-powered
EIA/TIA-232 and V.28/V.24 communications interfaces
with automatic shutdown/wakeup features, high data-
rate capabilities, and enhanced electrostatic discharge
(ESD) protection. All transmitter outputs and receiver
inputs are protected to ±15kV using IEC 1000-4-2 Air-
Gap Discharge, to ±8kV using IEC 1000-4-2 Contact
Discharge, and to ±15kV using the Human Body Model.
The MAX3221E/MAX3223E/MAX3243E achieve a
1µA supply current with Maxim’s revolutionary
AutoShutdown™ feature. They save power without
changes to the existing BIOS or operating system by enter-
ing low-power shutdown mode when the RS-232 cable is
disconnected, or when the transmitters of the connected
peripherals are off.
The transceivers have a proprietary low-dropout trans-
mitter output stage, delivering true RS-232 performance
from a +3.0V to +5.5V supply with a dual charge pump.
The charge pump requires only four small 0.1µF capaci-
tors for operation from a +3.3V supply. Each device is
guaranteed to run at data rates of 250kbps while main-
taining RS-232 output levels.
The MAX3221E contains just one driver and one receiver,
making it the smallest single-supply RS-232 transceiver.
The MAX3223E has two drivers and two receivers. The
MAX3243E is a complete 3-driver/5-receiver serial port
ideal for notebook or subnotebook computers. It also
includes two noninverting receiver outputs that are always
active, allowing external devices to be monitored without
forward biasing the protection diodes in circuitry that may
be powered down.
The MAX3221E, MAX3223E, and MAX3243E are avail-
able in space-saving SSOP packages.
19-1283; Rev 2; 1/98
AutoShutdown is a trademark of Maxim Integrated Products.
†
±15kV ESD-Protected, 1µA, 3.0V to 5.5V, 250kbps,
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.
Covered by U.S. Patent numbers 4,636,930; 4,679,134; 4,777,577; 4,797,899; 4,809,152; 4,897,774; 4,999,761; 5,649,210; and other patents pending.
Notebook, Subnotebook, and Palmtop Computers
Cellular Phones
Battery-Powered Equipment
Hand-Held Equipment
Peripherals
Printers
RS-232 Transceivers with AutoShutdown
________________________________________________________________ Maxim Integrated Products
General Description
Applications
Pin Configurations appear at end of data sheet.
Typical Operating Circuits appear at end of data sheet.
MAX3221ECAE
MAX3221EEAE
MAX3223ECPP
MAX3223ECAP
MAX3223EEPP
MAX3223EEAP
MAX3243ECWI
MAX3243ECAI
MAX3243EEWI
MAX3243EEAI
MAX3221E
MAX3223E
MAX3243E
ESD Protection for RS-232 I/O Pins:
Latchup Free
1µA Supply Current
250kbps Guaranteed Data Rate
6V/µs Guaranteed Slew Rate
Meets EIA/TIA-232 Specifications Down to 3.0V
Smallest Single-Supply RS-232 Transceiver
(MAX3221E)
Guaranteed Mouse Driveability (MAX3243E)
Small 0.1µF Capacitors
PART
±15kV—Human Body Model
±8kV—IEC1000-4-2, Contact Discharge
±15kV—IEC1000-4-2, Air-Gap Discharge
PART
RECEIVERS
DRIVERS/
NO. OF
1/1
2/2
3/5
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
Ordering Information
V
CC
3.0 to 5.5
3.0 to 5.5
3.0 to 5.5
RANGE
(V)
Selector Guide
16 SSOP
16 SSOP
20 Plastic DIP
20 SSOP
20 Plastic DIP
20 SSOP
28 Wide SO
28 SSOP
28 Wide SO
28 SSOP
PIN-PACKAGE
AUTOSHUTDOWN
Features
1
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