The MAX491CPD+ is an integrated-circuit (IC) component that serves as a single-driver/single-receiver RS-485/RS-422 transceiver. It incorporates several key features that make it a versatile and reliable choice for industrial communication systems.
One of the standout features of the MAX491CPD+ is its wide supply voltage range, which spans from 4.75V to 5.25V. This allows it to be powered by a variety of sources, providing flexibility in different application scenarios. Additionally, the IC has a low quiescent supply current, which minimizes power consumption and ensures efficient operation.
In terms of communication capabilities, the MAX491CPD+ offers excellent data rates, supporting up to 250kbps transmission speeds. It can be used in multidrop configurations, enabling communication with multiple nodes in a network. Furthermore, the device has high common-mode voltage range of -7V to +12V, which ensures reliable data transmission in noisy industrial environments.
The IC features a fail-safe receiver that ensures a high-impedance output state in the absence of input signals. This prevents bus contention issues and guarantees proper bus termination even when the transmitter is inactive. The MAX491CPD+ is also equipped with thermal shutdown circuitry, protecting the device from potential damage caused by excessive temperatures.
In terms of physical characteristics, the MAX491CPD+ comes in a 14-pin plastic dual in-line package (PDIP)
