MAX3243IDBR

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Transceiver
Protocol:	RS232
Number of Drivers/Receivers:	3/5
Duplex:	Full
Receiver Hysteresis:	500mV
Data Rate:	250kbps
Voltage - Supply:	3 V ~ 5.5 V
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Surface Mount
Package / Case:	28-SSOP (0.209", 5.30mm Width)
Supplier Device Package:	28-SSOP
Base Part Number:	MAX3243

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Introduction:

The MAX3243IDBR is a single-channel data transceiver that combines the function of a line driver and an RS232 receiver. It operates at interfaces up to 12MHz and provides a low-cost solution for high-speed RS232 communications. The device features an input signal range of -7V to +12V and an output signal range of -12V to +7V. This allows the MAX3243IDBR to be used in applications that require a low power output. The MAX3243IDBR also offers a wide supply voltage range from 4.5V to 13.2V and a symmetrical receiver input current range from 1.6mA to 16mA, for improved noise immunity.

Application Field:

The MAX3243IDBR is designed for use in applications that require reliable, low-hassle communications. Applications where the MAX3243IDBR may be used include:- Point-of-sale and cash register equipment- Telecommunications equipment- Industrial control systems- Medical monitoring/analyzing equipment- Modem and fax machines- Networked computing systemsThe large signal range of the MAX3243IDBR also makes it suitable for automotive applications.

Working Principle:

The MAX3243IDBR combines the function of both a line driver and receiver. The device utilizes the RS232 voltage level, which is a variation of the EIA-485 standard. This voltage range is nominally 12V, but the maximum swing depends on the value of the pull-up and pull-down resistors. The device features an input signal range of -7V to +12V, and an output signal range of -12V to +7V. This allows the MAX3243IDBR to be used in applications that require a low power output.The device is designed to be used with a low-to-positive voltage supply and a negative-to-positive voltage supply. The supply voltage range is 4.5V to 13.2V, with a nominal input current of 600uA. The MAX3243IDBR is a unidirectional driver that provides full-range control and accuracy. When the driver is turned off, it draws no current, so it does not interfere with the system\'s data line.The MAX3243IDBR also features an on-board receiver that can detect voltages, up to 16mA, from the transmission line. The receiver output is inverted from the input signal, so it can be used as an indicator for determining when a transmission has been sent.

Conclusion:

The MAX3243IDBR is an ideal solution for high speed RS232 communications. It offers a wide supply voltage range and a symmetrical receiver input current range, for improved noise immunity. The device is designed to be used with a low-to-positive voltage supply and a negative-to-positive voltage supply, and can detect voltages, up to 16mA, from the transmission line. The MAX3243IDBR is suitable for applications in point-of-sale and cash register equipment, industrial control systems, telecommunications equipment, medical monitoring/analyzing equipment, modem and fax machines, networked computing systems, and automotive applications.

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