MAX14805CCM+
MAX14805CCM+ - Low-Power RS-485 Transceiver | Maxim Integrated
The Maxim Integrated MAX14805CCM+ is a low-power RS-485/RS-422 interface transceiver intended for robust bidirectional communication over long cable runs and noisy industrial environments. The orderable CCM+ package supports surface-mount assembly, while its interface ratings, supply range, temperature range, and electrical limits must be confirmed against the current manufacturer datasheet before production release. The MAX14805 family is commonly considered for industrial data links, distributed control networks, building automation, and equipment-to-equipment communication where differential signaling improves noise immunity.
An RS-485 transceiver is a physical-layer interface IC that combines a differential line driver with a differential receiver. It belongs to the hierarchy of transceiver IC, interface IC, communications IC, and semiconductor. Unlike a single-ended logic interface, an RS-485 interface uses differential voltage and a common-mode reference, allowing two devices to communicate over a balanced bus while rejecting much of the noise found between the signal and its return path. The related RS-422 standard primarily describes balanced point-to-point signaling, whereas RS-485 additionally supports multipoint bus arrangements.
The key engineering characteristics to verify include supported data rate, transceiver operating mode, bus-driver and receiver electrical limits, supply voltage, shutdown behavior, propagation delay, and package pin configuration. These parameters determine whether the device can meet a specified protocol timing budget, cable-length target, or network topology. In particular, intended use of the MAX14805CCM+ in a half-duplex bus should be confirmed against its documented driver-enable and receiver-enable functions, as well as any bus-idle or fail-safe behavior.
The MAX14805CCM+ should also be evaluated for signal integrity and system behavior rather than treated only as a logic-level part. Cable termination, biasing, grounding, connector pin assignment, and protection against electrostatic discharge can affect real-world reliability. The integrated transceiver provides the physical-layer conversion, but network integrity still depends on the external passive components and the topology of connected nodes. A qualified design should preserve the published common-mode range and avoid exceeding the absolute maximum ratings under transient conditions.
Typical applications include industrial sensor and actuator networks, factory automation links, access-control equipment, instrumentation, building-control systems, and other isolated or distributed communications installations. In each case, the device can serve as the interface between a host controller with logic-level I/O and a balanced RS-485 or RS-422 physical layer. It may also be used in point-to-point RS-422 links when its electrical characteristics and pin functions satisfy that standard. Protocol handling remains the responsibility of a UART, microcontroller, transceiver controller, or other communications processor.
A critical design step is to verify the exact MAX14805CCM+ pinout and exposed-pad or thermal requirements from the manufacturer datasheet before laying out a PCB. Place input and output decoupling capacitors close to their supply pins, route the differential pair as a tightly coupled pair, and provide a clear return-path strategy. Avoid long unprotected stubs, use only the termination scheme appropriate to the bus topology, and validate operation across cable length, data rate, temperature, and grounding conditions.
This page provides a structured engineering framework for evaluating the MAX14805CCM+, including application suitability, unresolved datasheet parameters, commercial-data limitations, and verified drop-in-equivalent requirements. Because the supplied web search returned no component records or cross-reference results, missing electrical and mechanical values are explicitly marked rather than inferred, allowing engineers to distinguish confirmed product identity from data that still requires datasheet review.
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