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What is MAX3232CPE?

This electronic component, produced by the manufacturer "Maxim Integrated", performs the same function as "3.0V to 5.5V / Low-Power / up to 1Mbps / True RS-232 Transceivers Using Four 0.1F External Capacitors".


MAX3232CPE Datasheet PDF - Maxim Integrated

Part Number MAX3232CPE
Description 3.0V to 5.5V / Low-Power / up to 1Mbps / True RS-232 Transceivers Using Four 0.1F External Capacitors
Manufacturers Maxim Integrated 
Logo Maxim Integrated Logo 


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19-0273; Rev 5; 3/99
3.0V to 5.5V, Low-Power, up to 1Mbps, True RS-232
Transceivers Using Four 0.1µF External Capacitors
_______________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)
______________Ordering Information
PART
MAX3222CUP
MAX3222CAP
MAX3222CWN
MAX3222CPN
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
PIN-PACKAGE
20 TSSOP
20 SSOP
18 SO
18 Plastic DIP
Ordering Information continued at end of data sheet.
_________________Pin Configurations
TOP VIEW
EN 1
C1+ 2
V+ 3
C1- 4
C2+ 5
C2- 6
V- 7
T2OUT 8
R2IN 9
MAX3222
18 SHDN
17 VCC
16 GND
15 T1OUT
14 R1IN
13 R1OUT
12 T1IN
11 T2IN
10 R2OUT
Typical Operating Circuits appear at end of data sheet.
DIP/SO
Pin Configurations continued at end of data sheet.
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.
________________________________________________________________ Maxim Integrated Products 1
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.

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MAX3232CPE equivalent
3.0V to 5.5V, Low-Power, up to 1Mbps, True RS-232
Transceivers Using Four 0.1µF External Capacitors
_____________________________Typical Operating Characteristics (continued)
(VCC = +3.3V, 235kbps data rate, 0.1µF capacitors, all transmitters loaded with 3k, TA = +25°C, unless otherwise noted.)
MAX3241
TRANSMITTER OUTPUT VOLTAGE
vs. LOAD CAPACITANCE
7.5
VOUT+
5.0
MAX3241
SLEW RATE
vs. LOAD CAPACITANCE
24
22
20
MAX3241
SUPPLY CURRENT vs. LOAD
CAPACITANCE WHEN TRANSMITTING DATA
45
235kbps
40
35
2.5
1 TRANSMITTER AT 235kbps
2 TRANSMITTERS AT 30kbps
0
-2.5
-5.0 VOUT-
-7.5
0
1000 2000 3000 4000 5000
LOAD CAPACITANCE (pF)
18
-SLEW
16
14
12
+SLEW
10
8 ALL OUTPUTS LOADED WITH 3k+CL
6 0.1µF CHARGE-PUMP CAPACITORS
4 FOR ALL DATA RATES UP TO 235kbps
0 1000 2000 3000 4000 5000
LOAD CAPACITANCE (pF)
30
25
20
15
10
5
0
0
120kbps
20kbps
1000 2000 3000 4000 5000
LOAD CAPACITANCE (pF)
MAX3237
TRANSMITTER OUTPUT VOLTAGE
vs. LOAD CAPACITANCE (MBAUD = GND)
7.5
5.0
2.5
1 TRANSMITTER AT 240kbps
4 TRANSMITTERS AT 15kbps
0 3k+ CL LOADS
VCC = 3.3V
-2.5
-5.0
-7.5
0
1000 2000 3000 4000 5000
LOAD CAPACITANCE (pF)
MAX3237
SLEW RATE vs. LOAD CAPACITANCE
(MBAUD = VCC)
70
60
-SLEW, 1Mbps
50 +SLEW, 1Mbps
-SLEW, 2Mbps
40 +SLEW, 2Mbps
30
20
1 TRANSMITTER AT FULL DATA RATE
10
4 TRANSMITTERS AT 1/16 DATA RATE
3k+ CL LOAD EACH OUTPUT
0 VCC = 3.3V
0 500 1000 1500 2000
LOAD CAPACITANCE (pF)
MAX3237
TRANSMITTER OUTPUT VOLTAGE
vs. LOAD CAPACITANCE (MBAUD = VCC)
7.5
1Mbps
5.0
2Mbps
1.5Mbps
2.5
1 TRANSMITTER AT FULL DATA RATE
4 TRANSMITTERS AT 1/16 DATA RATE
0 3k+ CL LOAD, EACH OUTPUT
VCC = 3.3V
-2.5
2Mbps
1.5Mbps
-5.0
1Mbps
-7.5
0
500 1000 1500 2000
LOAD CAPACITANCE (pF)
MAX3237
SUPPLY CURRENT vs.
LOAD CAPACITANCE (MBAUD = GND)
60
50 240kbps
40 120kbps
30
20kbps
20
1 TRANSMITTER AT FULL DATA RATE
10
4 TRANSMITTERS AT 1/16 DATA RATE
3k+ CL LOADS
VCC = 3.3V
0
0 1000 2000 3000 4000 5000
LOAD CAPACITANCE (pF)
MAX3237
SLEW RATE vs. LOAD CAPACITANCE
(MBAUD = GND)
12
10 -SLEW
+SLEW
8
6
4
1 TRANSMITTER AT 240kbps
2
4 TRANSMITTERS AT 15kbps
3k+ CL LOADS
VCC = 3.3V
0
0 1000 2000 3000 4000
LOAD CAPACITANCE (pF)
MAX3237
SKEW vs. LOAD CAPACITANCE
(tPLH - tPHL)
70
1 TRANSMITTER AT 512kbps
60 4 TRANSMITTERS AT 32kbps
3k+ CL LOADS
50
VCC = 3.3V
MBAUD = VCC
40 MAX
AVERAGE; 10 PARTS
30
5000
20
10
0
0
MIN
500 1000 1500 2000 2500
LOAD CAPACITANCE (pF)
_______________________________________________________________________________________ 5


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Featured Datasheets

Part NumberDescriptionMFRS
MAX3232CPEThe function is 3.0V to 5.5V / Low-Power / up to 1Mbps / True RS-232 Transceivers Using Four 0.1F External Capacitors. Maxim IntegratedMaxim Integrated

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