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MAX3232CPE Datasheet(PDF) 1 Page - Maxim Integrated Products

Part No. MAX3232CPE
Description  3.0V to 5.5V, Low-Power, up to 1Mbps, True RS-232 Transceivers Using Four 0.1uF External Capacitors
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Maker  MAXIM [Maxim Integrated Products]
Homepage  http://www.maxim-ic.com
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 1 page
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For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
_______________General Description
The MAX3222/MAX3232/MAX3237/MAX3241 trans-
ceivers have a proprietary low-dropout transmitter out-
put stage enabling true RS-232 performance from a
3.0V to 5.5V supply with a dual charge pump. The
devices require only four small 0.1µF external charge-
pump capacitors. The MAX3222, MAX3232, and
MAX3241 are guaranteed to run at data rates of
120kbps while maintaining RS-232 output levels. The
MAX3237 is guaranteed to run at data rates of 250kbps
in the normal operating mode and 1Mbps in the
MegaBaud™ operating mode, while maintaining RS-232
output levels.
The MAX3222/MAX3232 have 2 receivers and 2
drivers. The MAX3222 features a 1µA shutdown mode
that reduces power consumption and extends battery
life in portable systems. Its receivers remain active in
shutdown mode, allowing external devices such as
modems to be monitored using only 1µA supply cur-
rent. The MAX3222 and MAX3232 are pin, package,
and functionally compatible with the industry-standard
MAX242 and MAX232, respectively.
The MAX3241 is a complete serial port (3 drivers/
5 receivers) designed for notebook and subnotebook
computers. The MAX3237 (5 drivers/3 receivers) is ideal
for fast modem applications. Both these devices feature
a shutdown mode in which all receivers can remain
active while using only 1µA supply current. Receivers R1
(MAX3237/MAX3241) and R2 (MAX3241) have extra out-
puts in addition to their standard outputs. These extra
outputs are always active, allowing external devices
such as a modem to be monitored without forward bias-
ing the protection diodes in circuitry that may have VCC
completely removed.
The MAX3222, MAX3237, and MAX3241 are available
in space-saving TSSOP and SSOP packages.
________________________Applications
Notebook, Subnotebook, and Palmtop Computers
High-Speed Modems
Battery-Powered Equipment
Hand-Held Equipment
Peripherals
Printers
____________________________Features
o Low Supply Current:
300µA (MAX3222/MAX3232/MAX3241)
500µA (MAX3237)
o Guaranteed Data Rate:
120kbps (MAX3222/MAX3232/MAX3241)
250kbps (MAX3237—Normal Operation)
1Mbps (MAX3237—MegaBaud Operation)
o 1µA Low-Power Shutdown with Receivers Active
(MAX3222/MAX3237/MAX3241)
o Flow-Through Pinout (MAX3237)
o Meets EIA/TIA-232 Specifications Down to 3.0V
o Guaranteed Mouse Driveability (MAX3241)
o Pin Compatible with Industry-Standard MAX232
(MAX3232)
Pin Compatible with Industry-Standard MAX242
(MAX3222)
o Guaranteed Slew Rate:
6V/µs (MAX3222/MAX3232/MAX3237/MAX3241)
24V/µs (MAX3237—MegaBaud Operation)
3.0V to 5.5V, Low-Power, up to 1Mbps, True RS-232
Transceivers Using Four 0.1µF External Capacitors
________________________________________________________________
Maxim Integrated Products
1
18
17
16
15
14
13
12
11
1
2
3
4
5
6
7
8
SHDN
VCC
GND
T1OUT
C1-
V+
C1+
EN
TOP VIEW
R1IN
R1OUT
T1IN
T2IN
T2OUT
V-
C2-
C2+
10
9
R2OUT
R2IN
DIP/SO
MAX3222
_________________Pin Configurations
______________Ordering Information
19-0273; Rev 5; 3/99
PART
TEMP. RANGE
PIN-PACKAGE
MegaBaud is a trademark of Maxim Integrated Products.
*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; and other patents pending.
Typical Operating Circuits appear at end of data sheet.
Pin Configurations continued at end of data sheet.
Ordering Information continued at end of data sheet.
MAX3222CUP
0°C to +70°C
20 TSSOP
MAX3222CAP
0°C to +70°C
20 SSOP
MAX3222CWN
0°C to +70°C
18 SO
MAX3222CPN
0°C to +70°C
18 Plastic DIP




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