MAX3222ECAP+T

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Transceiver
Protocol:	RS232
Number of Drivers/Receivers:	2/2
Duplex:	Full
Receiver Hysteresis:	500mV
Data Rate:	1Mbps
Voltage - Supply:	3 V ~ 5.5 V
Operating Temperature:	0°C ~ 70°C
Mounting Type:	Surface Mount
Package / Case:	20-SSOP (0.209", 5.30mm Width)
Supplier Device Package:	20-SSOP
Base Part Number:	MAX3222

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MAX3222ECAP+T is an integrated, cost-optimized, ultra-low power transceiver IC for RS-232 communication that combines transmitter, receiver and Capacitively Coupled Transceiver functions. It is suitable for applications where power-saving is of critical importance, such as mobile devices.MAX3222ECAP+T is compliant with the EIA/TIA RS-232-C specification, and is optimized for +3.3V, +5V and +12V levels. It has an extended temperature range from -40C to +85C and features 3.0V to 5.5V operating voltage. It also features a low supply current of less than 1mA, providing excellent power saving capabilities while still delivering robust RS-232 signal levels.The integrated receiver and transmitter of the MAX3222ECAP+T can work in both full-duplex and half-duplex modes. The receiver provides two functions, Single Ended I/O and Differential I/O, allowing it to be used in a wide range of applications. Its Capacitively Coupled Transceiver pinouts allows the MAX3222ECAP+T to drive a variety of parasitic pair cables.The MAX3222ECAP+T also features a 3-state control input, allowing the Capacitively Coupled Transceiver functions to be disabled for certain applications, such as e-mail services or data base access, where only the TxD and RxD need to be enabled. This allows the MAX3222ECAP+T to be used in a wide variety of applications, including wireless products.The MAX3222ECAP+T is fabricated on a monolithic die and features exceptionally low power consumption and high reliability. This makes it an ideal choice for an always-on solution in applications where power-saving is a top priority.ApplicationsThe MAX3222ECAP+T has a wide variety of applications, including:• Mobile devices• Embedded systems• Portable instrumentation• Video systems• Medical equipment• Point-of-Sale systems• Industrial control systems• Automotive control systemsWorking principleThe MAX3222ECAP+T receives input signals and transmits data over the TxD and RxD lines. The transmitter has a maximum output voltage of +5V, which is typically enough for RS-232-compliant devices. It features a slew rate limitation circuit that limits data transmission speed. The MAX3222ECAP+T is also capable of adding Start and Stop bits to the transmitted data, allowing it to communicate with other RS-232 compliant devices.The receiver section of the MAX3222ECAP+T is configured as a differential amplifier and provides both Single Ended I/O and Differential I/O signals. The input is configured to accept a maximum input voltage of +9V, and the receiver also features input protection that prevents damage due to static discharge. The receiver section is capable of detecting data provided at up to 115 Kbps.The Capacitively Coupled Transceiver portion of the MAX3222ECAP+T allows it to drive a variety of parasitic pair cables. It also features an enabled/disabled control pin, allowing it to be used in applications where only the TxD and RxD signals need to be enabled.In order to maximize power savings, the MAX3222ECAP+T is fabricated on a single monolithic die. This allows for optimized power management and creates an ultra-low power solution for RS-232 communication.ConclusionThe MAX3222ECAP+T is an integrated, cost-optimized, ultra-low power transceiver IC for RS-232 communication. It is compliant with the EIA/TIA RS-232-C specification and features an extended temperature range from -40C to +85C. Its integrated receiver and transmitter are capable of working in both full-duplex and half-duplex modes and its Capacitively Coupled Transceiver pinouts allow it to drive a variety of parasitic pair cables. The MAX3222ECAP+T is also able to add Start and Stop bits to transmitted data, allowing it to communicate with other RS-232 compliant devices. Its exceptionally low power consumption and high reliability makes it an ideal choice for applications where power-saving is a top priority, such as mobile devices, embedded systems, portable instrumentation, medical equipment, and industrial control systems.

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