MAX3223EAP

Introduction

MAX3223EAP is a bi-direction RS-232 driver/receiver designed for portable and battery-operated applications. It incorporates a low-dropout (LDO) voltage regulator and is available in a small 6-pin SOT23 package. The MAX3223EAP is well suited for operating devices such as barcode scanners, industrial and medical equipment, card readers, and point-of-sale terminals.

Application Field and Working Principle

The MAX3223EAP are members of the MAX3223 family of monolithic RS-232 driver/receivers, which combine all the necessary functions required by any serial communications device. The devices provide a true RS-232 signal with input and output transition levels of +8V and -8V from a single 5V or higher supply. The MAX3223EAP is designed to operate over a -40°C to +85°C temperature range without requiring additional active cooling. Furthermore, the device is designed for operation in both full-duplex and half-duplex modes with data rates up to 200kbps. Its low quiescent current of 10μA in Shutdown mode, enables long battery life and sustains low power consumption.

The MAX3223EAP contains two drivers, two receivers and charge pumps. The drivers are capable of driving up to 16 lines. The MAX3223EAP drivers and receivers feature disabled drivers, high-impedance receiver inputs, and low receive idle current in power-down mode. The devices are optimized for full and half-duplex applications. In half duplex mode, the MAX3223EAP supports data rates up to 200kbps.

In addition, the MAX3223EAP includes a low-dropout (LDO) voltage regulator, which can provide up to 500mA output current (typ.), with a dropout voltage of 1V typical, and is available in a 6-pin SOT23 package. The device enables higher data rates with minimal current consumption and supports applications that need a low power consumption and/or require low EMI (RFI) emissions for both transmit and receive.

Conclusion

In conclusion, the MAX3223EAP is the ideal choice for applications that need a low power consumption and/or require low EMI (RFI) emissions for both transmit and receive. It can be used for portable and battery-operated applications, barcode scanners, industrial and medical equipment, card readers and point-of-sale terminals. The device is also well suited for operating devices with data rates up to 200kbps. With its low quiescent current of 10μA in Shutdown mode, the device enables long battery life and is available in a 6-pin SOT23 package.