MAX3221 Series

+3V to +5.5V RS-232 Transceivers with AutoShutdown

Catalog(18 parts)

Part	Receiver Hysteresis▲▼	Duplex	Voltage - Supply▲▼	Voltage - Supply▲▼	Data Rate▲▼	Operating Temperature▲▼	Operating Temperature▲▼	Supplier Device Package	Protocol	Mounting Type	Type	Package / Case▲▼	Package / Case	Package / Case▲▼	Package / Case▲▼	Package / Case▲▼
Texas Instruments MAX3221IPW 1/1 Transceiver Full RS232 16-TSSOP	0.5 V	Full	3 V	5.5 V	256000 bit/s	-40 °C	85 °C	16-TSSOP	RS232	Surface Mount	Transceiver	0.004394200164824724 m	16-TSSOP	0.004399999976158142 m
Texas Instruments MAX3221EIDBG4 1/1 Transceiver Full RS232 16-SSOP	0.5 V	Full	3 V	5.5 V	256000 bit/s	-40 °C	85 °C	16-SSOP	RS232	Surface Mount	Transceiver		16-SSOP		0.005308600142598152 m	0.0052999998442828655 m
Texas Instruments MAX3221ECPWE4 1/1 Transceiver Full RS232 16-TSSOP	0.5 V	Full	3 V	5.5 V	256000 bit/s	0 °C	70 °C	16-TSSOP	RS232	Surface Mount	Transceiver	0.004394200164824724 m	16-TSSOP	0.004399999976158142 m
Texas Instruments MAX3221ECPWR 1/1 Transceiver Full RS232 16-TSSOP	0.5 V	Full	3 V	5.5 V	256000 bit/s	0 °C	70 °C	16-TSSOP	RS232	Surface Mount	Transceiver	0.004394200164824724 m	16-TSSOP	0.004399999976158142 m
Texas Instruments MAX3221CDBRG4 1/1 Transceiver Full RS232 16-SSOP	0.5 V	Full	3 V	5.5 V	256000 bit/s	0 °C	70 °C	16-SSOP	RS232	Surface Mount	Transceiver		16-SSOP		0.005308600142598152 m	0.0052999998442828655 m
Texas Instruments MAX3221MDBREP 1/1 Transceiver Full RS232 16-SSOP	0.5 V	Full	3 V	5.5 V	256000 bit/s	-55 °C	125 °C	16-SSOP	RS232	Surface Mount	Transceiver		16-SSOP		0.005308600142598152 m	0.0052999998442828655 m
Texas Instruments MAX3221IDBR 1/1 Transceiver Full RS232 16-SSOP	0.5 V	Full	3 V	5.5 V	256000 bit/s	-40 °C	85 °C	16-SSOP	RS232	Surface Mount	Transceiver		16-SSOP		0.005308600142598152 m	0.0052999998442828655 m
Texas Instruments MAX3221EIPWE4 1/1 Transceiver Full RS232 16-TSSOP	0.5 V	Full	3 V	5.5 V	256000 bit/s	-40 °C	85 °C	16-TSSOP	RS232	Surface Mount	Transceiver	0.004394200164824724 m	16-TSSOP	0.004399999976158142 m
Texas Instruments MAX3221ECDB 1/1 Transceiver Full RS232 16-SSOP	0.5 V	Full	3 V	5.5 V	256000 bit/s	0 °C	70 °C	16-SSOP	RS232	Surface Mount	Transceiver		16-SSOP		0.005308600142598152 m	0.0052999998442828655 m
Texas Instruments MAX3221EIPWR 1/1 Transceiver Full RS232 16-TSSOP	0.5 V	Full	3 V	5.5 V	256000 bit/s	-40 °C	85 °C	16-TSSOP	RS232	Surface Mount	Transceiver	0.004394200164824724 m	16-TSSOP	0.004399999976158142 m
Texas Instruments MAX3221IDBE4 1/1 Transceiver Full RS232 16-SSOP	0.5 V	Full	3 V	5.5 V	256000 bit/s	-40 °C	85 °C	16-SSOP	RS232	Surface Mount	Transceiver		16-SSOP		0.005308600142598152 m	0.0052999998442828655 m
Texas Instruments MAX3221CPWR 1/1 Transceiver Full RS232 16-TSSOP	0.5 V	Full	3 V	5.5 V	256000 bit/s	0 °C	70 °C	16-TSSOP	RS232	Surface Mount	Transceiver	0.004394200164824724 m	16-TSSOP	0.004399999976158142 m
Texas Instruments MAX3221IPWRG4 1/1 Transceiver Full RS232 16-TSSOP	0.5 V	Full	3 V	5.5 V	256000 bit/s	-40 °C	85 °C	16-TSSOP	RS232	Surface Mount	Transceiver	0.004394200164824724 m	16-TSSOP	0.004399999976158142 m
Texas Instruments MAX3221ECPW 1/1 Transceiver Full RS232 16-TSSOP	0.5 V	Full	3 V	5.5 V	256000 bit/s	0 °C	70 °C	16-TSSOP	RS232	Surface Mount	Transceiver	0.004394200164824724 m	16-TSSOP	0.004399999976158142 m
Texas Instruments MAX3221EIPWG4 1/1 Transceiver Full RS232 16-TSSOP	0.5 V	Full	3 V	5.5 V	256000 bit/s	-40 °C	85 °C	16-TSSOP	RS232	Surface Mount	Transceiver	0.004394200164824724 m	16-TSSOP	0.004399999976158142 m
Texas Instruments MAX3221CDBR 1/1 Transceiver Full RS232 16-SSOP	0.5 V	Full	3 V	5.5 V	256000 bit/s	0 °C	70 °C	16-SSOP	RS232	Surface Mount	Transceiver		16-SSOP		0.005308600142598152 m	0.0052999998442828655 m
Texas Instruments MAX3221IDB 1/1 Transceiver Full RS232 16-SSOP	0.5 V	Full	3 V	5.5 V	256000 bit/s	-40 °C	85 °C	16-SSOP	RS232	Surface Mount	Transceiver		16-SSOP		0.005308600142598152 m	0.0052999998442828655 m
Texas Instruments MAX3221ECPWG4 1/1 Transceiver Full RS232 16-TSSOP	0.5 V	Full	3 V	5.5 V	256000 bit/s	0 °C	70 °C	16-TSSOP	RS232	Surface Mount	Transceiver	0.004394200164824724 m	16-TSSOP	0.004399999976158142 m

Key Features

• Integrated Charge Pump Circuitry Simplifies Power RequirementsEliminates the Need for a ±12V SupplyOperation From a Single +3.3V or +5V Supply

• Eliminates the Need for a ±12V Supply

• Operation From a Single +3.3V or +5V Supply

• 1µA Supply Current in Shutdown Mode Saves PowerAutoShutdown Feature is Enabled After No Activity on Receiver Inputs for 30μsSoftware Control Option for Shutdown

• AutoShutdown Feature is Enabled After No Activity on Receiver Inputs for 30μs

• Software Control Option for Shutdown

Description

The MAX3221/MAX3223/MAX3243 achieve 1µA supply current with Maxim’s revolutionary AutoShutdown™feature. When the MAX3221/MAX3223/MAX3243 do not sense a valid signal level on their receiver inputs, the on-board power supply and drivers shut down. This occurs if the RS-232 cable is disconnected or if the transmitters of the connected peripheral are turned off. The system turns on again when a valid level is applied to any RS-232 receiver input.The MAX3221/MAX3223/MAX3243 require only 0.1µF capacitors in 3.3V operation, and can operate from input voltages ranging from +3.0V to +5.5V.A proprietary, high-efficiency, dual charge-pump power supply and a low-dropout transmitter combine to deliver true RS-232 performance from a single +3.0V to +5.5V supply.The MAX3221 is a 1-driver/1-receiver 16-pin SSOP version of the 20-pin 2-driver/2-receiver MAX3223.The MAX3243 is a 3-driver/5-receiver with a complementary always-active receiver for external monitoring in a variety of 28 pin packages. Please see order information table for package offerings.ApplicationsBattery-Powered EquipmentHand-Held EquipmentPeripheralsPortable Diagnostics Equipment