MAX3222ECPN+

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Introduction

The MAX3222ECPN+ is a low-power, low-voltage, full-duplex RS-232 transceiver for use in data communications between either a Data Terminal Equipment (DTE) or Data Communication Equipment (DCE) and a data communication line as specified in the EIA/TIA-232-F standard. It is a few millivolts above ground that saturates the output transistor, allowing the device to operate over a wide range of capacitive loads and maintain full RS-232 waveform performance in the process. The device typically is placed in-line between a conventional (DTE) and Data Communication Equipment (DCE) and it operates as an interface to transmit and receive data in the RS-232 protocol.

Application Field & Working Principle

The MAX3222ECPN+ is an EIA/TIA-232-F compatible transceiver/driver. It is designed primarily to transmit/receive NRZ/UART data from a data source to/from a peripheral device. It operates over a wide range of supply and signal voltage levels, and is designed for use in a variety of applications, including wireless and television data products, low-voltage systems, and high-speed data communication products. The device works on the principle of differential voltage transmission. It utilizes a pair of complementary metal-oxide-semiconductor (CMOS) transistors to separate the input from the output. A current over the transistor base junction generates a voltage drop to the collector. The collector voltage is then compared to the base voltage and a differential voltage is sensed.

The MAX3222ECPN+ includes both receiver and transmitter outputs on the same chip (integrated-receiver, transmitter (IRT) solution). This feature simplifies board layout with minimized trace lengths, since all functions are integrated onto the same IC. Since the IC has two transmitters, very short traces can be used. Also, since the two transmitter outputs are always "180o out of phase" with each other, this also reduces ringing on the output signals.

The MAX3222ECPN+ features a low power dissipation mode with capability to automatically enter the active or standby mode, so no external control or logic support is required for power management. By entering the active or standby mode, the MAX3222ECPN+ can reduce the power dissipation by more than 90%. The device has programmable slew rate on inputs and outputs to control the rise and fall times of the waveform, or to reduce the spectral content of the transmitted waveform.

The device supports 5V logic levels and is designed to perform best in low-voltage communication environments (1.8V to 5V). Its output levels are designed to provide full 2Vpp into an open circuit, while allowing the output voltage to drop as low as 0.8V under high capacitive loads, such as those encountered in compliance testing. This permits the device to maintain adequate link margin in the presence of excessive transmission line loading.

Benefits

The MAX3222ECPN+ is an ideal choice for applications where power consumption, noise immunity, and ease of use are critical. It also provides protection against overvoltage and short-circuit conditions. Furthermore, it is fully compliant with the standards set by EIA/TIA-232-F, RS-232, and RS-485, and is designed to work with the largest possible range of peripherals. The device has a fail-safe input and output, providing robust data protection and support for high-speed applications (up to 1 Mbps).

Conclusion

The MAX3222ECPN+ is a low-power, low-voltage, full-duplex RS-232 transceiver ideal for use in data communications between either a Data Terminal Equipment (DTE) or Data Communication Equipment (DCE) and a data communication line. It provides protection against overvoltage and short-circuit conditions and is designed to work with the largest possible range of peripherals. It also has programmable slew rate on inputs and outputs to control the rise and fall times of the waveform as well as reduce the spectral content of the transmitted waveform. The device has a fail-safe input and output, providing robust data protection and support for high-speed applications (up to 1 Mbps).

The specific data is subject to PDF, and the above content is for reference