RS422/RS485 transceiver GX3490 can replace MAX3490 widely used in communication

In the field of communication, RS-485/RS-422 transceiver can be used to realize the communication connection between devices. It is capable of converting and transmitting digital voice signals, control signals, etc. generated by different devices to ensure the normal operation of communication networks and provide users with high-quality data communication services.

GX3490 is a low-power, high-performance RS-485/RS-422 device in an 8-pin SOIC package that supports a maximum data rate of 10Mbps, and has been widely used in communications, industrial control LANs, and EMI-sensitive application transceivers. The transceiver‘s slew rate-limiting feature effectively reduces electromagnetic interference, and reduces reflections caused by improperly terminated matching cables. The transceiver‘s slew rate limiting features effectively minimize electromagnetic interference, reduce reflections caused by improperly terminated matching cables, and ensure the accuracy and reliability of data transmission to meet the stringent requirements of communication quality and electromagnetic compatibility in these special applications.

The GX3490 is rated at 3.3 V. The analog bus pins are protected against ESD events up to ±10 kV HBM, and the RX common-mode voltage range is from -7 V to 12 V. It supports full-duplex operation, and the analog bus Y/Z pins can withstand direct short-circuit withstand voltages ranging from 0-28 V. The analog bus A/B pins can withstand direct short-circuit withstand voltages ranging from ±40 V. The GX3490 is also protected against direct short-circuit withstand voltages of ±40 V. The GX3490 is also designed to be used in a variety of other applications. The analog bus A/B pins can withstand ±40V direct short-circuit voltage protection.

The GX3490 receiver includes complete fail-safe circuitry to ensure a logic-high receiver output if the receiver input is open, shorted, or not driven.The GX3490 receiver input impedance is at least 120k (1/10 unit load), allowing more than 320 devices on the bus. The driver is protected by short-circuit detection as well as thermal shutdown, allowing high impedance to be maintained during shutdown or power loss.

Performance Description:

- 3.0V to 5.5V operating range

- Reliable ESD protection

- ±10kV HBM (bus pin); ±5kV HBM (non-bus pin)

- Enhanced receiver fail-safe protection for disconnection, short-circuiting or termination of all but idle data lines

- Driver short-circuit current limit and thermal shutdown overload protection

- Ambient operating range of -40°C to 105°C