The MAX3222E/M AX3232E are 2 driver, 2 receiver RS-232 transceiver solutions intended for
portable or hand-held applications, features low power consumption, high data-rate capabilities,
and enhanced ESD protection. The ESD tolerance of the MAX3222E/3232E devices is over
±15kV for both human body model and IEC1000-4-2 air discharge test methods.
A low-dropout transmitter output stage delivers true RS-232 performance from a +3.0V to +5.5V
power supply, using an internal dual charge pump. The charge pump requires only four small
0.1µF capacitors for operation from a +3.3V supply. Each device guarantees operation at data
rates of 250kbps while maintaining RS-232 output levels.
The MAX3222E features a 1µA shutdown mode that reduces power consumption in
battery-powered portable systems. The M AX3222E receivers remain active in shutdown mode,
allowing monitoring of external devices while consuming only 1µA of supply current. The
M AX3222E and MAX3232E are pin, package, and functionally compatible with the
industry-standard M AX242 and MAX232, respectively.
Applications
Notebook, Sub notebook, and Palmtop Computers
Battery-Powered / Hand-Held Equipment
POS terminal
/
Intelligent Network Switch
DMM / Printers
Smart Phones
xDSL Modems
Features
Meets true EIA/TIA-232-F Standards from a +3.0V to +5.5V power supply
Interoperable with EIA/TIA - 232 and adheres to EIA/TIA - 562
1µA Low-Power Shutdown (MAX3222E)
Enhanced ESD Specifications:
15kV Human Body Model
15kV IEC1000-4-2 Air Discharge
8kV IEC1000-4-2 Contact Discharge
250 kbps Minimum Transmission Rate
Ideal for Handheld, Battery Operated Applications
Latch up Free
Guaranteed 30V/µs Max Slew Rate
BiCMOS Technology
MAX3222/3232 Datasheet Rev. 0.1 , Sept 2005
Page 1 of 7
Anasys Semiconductor, Inc.
Ordering Information
PART
TEMP. RANGE PIN-PACKAGE
20 TSSOP
20 SSOP
18 Plastic DIP
16 SSOP
16 Narrow SO
16 Plastic DIP
20 TSSOP
MAX3222EEUP -40°C to +85°C
MAX3222EEAP -40°C to +85°C
MAX3222EEPN -40°C to +85°C
MAX3232EEAE
MAX3232EESE
MAX3232EEPE
MAX3232EEUP
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
Absolute Maximum Ratings
Ratings
Power Supply
V
CC
to GND
V
+
to GND
V
-
to GND
V
+
to V
-
-0.3 to +6
-0.3 to +7
-0.3 to +7
13
V
V
V
V
Range
Units
Input Voltages
-0.3 to +6
V
T_IN
,
EN
,
SHDN
R_IN to GND
±25
V
Output Voltages
T_OUT to GND
R_OUT to GND
Short-Circuit Duration, T_OUT
±13.2
-0.3 to (
V
CC
+0.3 )
V
V
Continuous
Continuous Power Dissipation (TA = +70°C)
16-Pin DIP (derate 10.53mW/°C above +70°C)
16-Pin NSO (derate 8.70mW/°C above +70°C)
16-Pin SSOP (derate 7.14 mW/°C above +70°C)
20-Pin TSSOP (derate 10.9 mW/°C above +70°C)
20-Pin SSOP (derate 8.00 mW/°C above +70°C)
842
696
571
879
640
mW
mW
mW
mW
mW
°C
°C
°C
°C
Operating Temperature Ranges
MAX32__EC__
MAX32__EE__
Storage Temperature Range
Lead
10sec)
Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
0 to 70
-40 to +85
-65 to +165
300
Temperature
(soldering,
MAX3222/3232 Datasheet Rev. 0.1 , Sept 2005
Page 2 of 7
Anasys Semiconductor, Inc.
Pin Description
PIN
MAX3222E
SO/DIP TSSOP/SSOP
1
2
3
4
5
6
7
8, 15
9, 14
10, 13
11, 12
16
17
18
1
2
3
4
5
6
7
8, 17
9, 16
10, 15
12, 13
18
19
20
MAX3232E
SO/DIP/SSOP TSSOP
—
1
2
3
4
5
6
7, 14
8, 13
9, 12
10, 11
15
16
—
—
2
3
4
5
6
7
8, 17
9, 16
12, 15
13, 14
18
19
—
NAME
FUNCTION
Receiver Enable. Active low.
Positive Terminal of
Voltage-Doubler
Charge-Pump Capacitor
+5.5V Generated by the
Charge Pump
Negative Terminal of
Voltage-Doubler
Charge-Pump Capacitor
Positive Terminal of Inverting
Charge-Pump Capacitor
Negative Terminal of Inverting
Charge-Pump Capacitor
-5.5V Generated by the
Charge Pump
RS-232 Transmitter Outputs
RS-232 Receiver Inputs
TTL/CMOS Receiver Outputs
TTL/CMOS Transmitter Inputs
Ground
+3.0V to +5.5V Supply
Voltage
Shutdown Control. Active low.
EN
C1+
V+
C1-
C2+
C2-
V-
T_OUT
R_IN
R_OUT
T_IN
GND
VCC
SHDN
MAX3222/3232 Datasheet Rev. 0.1 , Sept
Page 3 of 7
Anasys Semiconductor, Inc.
Electrical Characteristics
(VCC = +3V to +5.5V, C1-C4 = 0.1µF, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at
T
A
= +25°C.)
Parameter
Symbol
Conditions
Min
DC Characteristics (VCC = +3.3V or +5.5V, T
A
= +25°C )
V
CC
Supply Current
Shutdown
Current
Supply
I
CC
I
SHDN
Typ
0.3
1
1
Max
Units
mA
µA
SHDN
= V
CC
,No
Load, T
A
=+25°C
SHDN
=GND,
Load, T
A
=+25°C
No
10
Logic
Input
Current
Leakage
VIL
VIH
VOH
VOL
T_IN,
SHDN
,
EN
T_IN,
SHDN
,
EN
T_IN,
SHDN
,
EN
R_OUT; IOUT=3.2mA
R_OUT; IOUT=-1.0mA
2.0
0.4
VCC-0.6
-25
0.6
0.1
3
±5
300
VCC-0.1
25
1.1
1.5
5
±5.4
500
±60
RL=3 kΩ to 7 kΩ, CL=
50pF to 1000pF, one
transmitter switching
t
PLHR
,
t
PHLR
t
PLHT
,
t
PHLT
CL= 150pF
RL=3 kΩ, CL= 2500pF
all transmitters loaded
T
A
=+25°C, V
CC
= 3.3V
RL=3 kΩ to 7 kΩ, CL=
50pF
to
1000pF,
measured from -3V to
+3V or +3V to -3V,
Human Body Model
IEC1000-4-2, Contact
Discharge
IEC1000-4-2, Air-Gap
Discharge
2.4
0.2
7
±1
0.8
µA
V
V
V
V
V
V
V
V
kΩ
V
Ω
mA
Input Threshold Low
Input Threshold High
Output Voltage Low
Output Voltage High
Input Voltage Range
Input Threshold Low
Input Threshold High
Input Hysteresis
Input Resistance
Output
Voltage
Swing
Output Resistance
Output Short Circuit
Current
EIA/TIA-232E Receiver Inputs
T
A
=+25°C, V
CC
= 3.3V
T
A
=+25°C, V
CC
= 3.3V
V
CC
= 3.3V
T
A
=+25°C, V
CC
= 3.3V
All drivers loaded with
3kΩ to ground
EIA/TIA-232E Transmitter Outputs
TIMING CHARACTERISTICS
Maximum Data Rate
Receiver Propagation
Delay
Transmitter
Propagation Delay
Transition-Region
Slew rate
250
0.15
0.1
kbps
µs
µs
3
6
30
V/µs
ESD & Latch up Performance
±15
±8
±15
±200
kV
kV
kV
mA
ESD
Voltage
Protection
Latch
Performance
up
MAX3222/3232 Datasheet Rev. 0.1 , Sept 2005
Page 4 of 7
Anasys Semiconductor, Inc.
Typical Operating Characteristics
(VCC = +3.3V, 250kbps data rate, 0.1µF capacitors, all transmitters loaded with 3kΩ and CL, TA
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