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Products (38,000+)

ADM3251EARWZ - 2.5kV Isolated RS-232 Transceiver, 460kbps | ADI
ADM3251EARWZ

ADM3251EARWZ - 2.5kV Isolated RS-232 Transceiver, 460kbps | ADI

The Analog Devices ADM3251EARWZ is a 2.5 kV rms fully isolated, single-channel RS-232/V.28 transceiver housed in a 20-pin SOIC (7.5 mm body width) wide-body package with integrated isoPower dc-to-dc converter. It operates from a single 5 V supply, supports data rates up to 460 kbps, and delivers 25 kV/µs common-mode transient immunity (CMTI) across the reinforced isolation barrier. An RS-232 transceiver is a line interface IC that converts CMOS/TTL logic levels (0-5 V) into EIA/TIA-232E voltage swings (±5 V to ±15 V) required by legacy serial-port peripherals such as industrial PLCs, point-of-sale terminals, and instrumentation. A fully isolated variant such as the ADM3251EARWZ adds galvanic isolation (here 2.5 kV rms) between the logic-side UART and the cable-side driver/receiver, breaking ground loops and protecting low-voltage MCUs from large common-mode transients and ESD events on the bus. Key specifications include ±15 kV ESD protection (HBM) on the RIN and TOUT pins, integrated charge-pump that requires only four external 0.1 µF capacitors, low-power shutdown mode, and an exposed pad for thermal dissipation. The chip conforms to EIA/TIA-232E and ITU-T V.28 standards, ensuring interoperability with any standard RS-232 host or peripheral. Architecturally, the device combines an iCoupler digital-isolation data path with an isoPower transformer-based DC-DC converter that derives the ±RS-232 supplies internally, eliminating the need for a separate isolated supply on the cable side. This single-chip isolation approach reduces PCB area versus discrete isolator-plus-transceiver designs and simplifies regulatory compliance for medical, industrial, and renewable-energy systems. Typical applications include isolated serial ports in PLCs and motor drives, point-of-sale terminals, medical patient monitors, solar inverter diagnostics, and any RS-232 link requiring robust ground-loop immunity. When designing with this device, allocate the four 0.1 µF charge-pump capacitors close to the V+ and V- pins, and provide a low-ESR decoupling cap on VDD. Verify creepage and clearance on the PCB to maintain the 2.5 kV rms rating. This page synthesizes distributor pricing, drop-in alternatives, and design notes not found in the manufacturer datasheet.

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ADM483ARZ - 250 kbps RS-485/RS-422 Transceiver | Analog Devices
ADM483ARZ

ADM483ARZ - 250 kbps RS-485/RS-422 Transceiver | Analog Devices

The Analog Devices ADM483ARZ is a 5 V, slew-rate-limited, low-power half-duplex differential line transceiver rated for 250 kbps data rates and packaged in an 8-pin SOIC. It supports RS-485 and RS-422 communication over multipoint buses, combining a differential line driver and differential receiver in one package. Key operating characteristics include a 5 V supply, 250 kbps maximum signaling rate, 120 uA low-power consumption, and a -7 V to +12 V bus common-mode range. An RS-485/RS-422 transceiver is an interface IC that converts logic-level transmit and receive signals into balanced differential signals suitable for reliable communication over wired buses. RS-485 supports multipoint, half-duplex networks, while RS-422 provides a differential signaling foundation for point-to-point links. The ADM483 belongs to the broader interface IC hierarchy alongside UARTs, isolated transceivers, CAN transceivers, and other wired-communication interface devices. The ADM483’s principal feature is its controlled slew rate. Slowing the driver edge rate reduces electromagnetic interference and ringing on slow or terminated cabling while preserving operation at up to 250 kbps. The device also supports high-impedance driver output when disabled or powered off, thermal shutdown, and short-circuit protection. These characteristics are useful in industrial equipment, building controls, and instrumentation where cable length, grounding, and reflected signals can affect reliability. The receiver operates across a -7 V to +12 V common-mode range, allowing the bus pins to tolerate significant differential signal offset without immediately losing receiver function. Up to 32 transceivers can share one bus according to the Analog Devices data sheet. The ADM483ARZ is specified from -40°C to +85°C, making it suitable for industrial temperature environments when the wider commercial operating range is insufficient. Typical uses include RS-485 instrument buses, factory-floor controllers, remote sensor nodes, building automation equipment, and RS-422 links between a controller and a peripheral. In a half-duplex design, the driver and receiver paths share the same pair of bus conductors, so the DE and RE controls must be coordinated to avoid contention. The low 120 uA supply current also benefits compact systems where bus-node power consumption affects the overall power budget. For implementation, follow the manufacturer’s recommended decoupling and termination arrangement. Place the supply capacitor close to VCC, connect the differential pair with tightly matched routing, and apply termination only where the cable topology requires it. Confirm driver-enable timing, bus-idle state, grounding strategy, and fault behavior before releasing the transceiver into a live multidrop network. This product page combines the ADM483ARZ operating limits, interface behavior, package information, and application guidance with drop-in replacement analysis. The comparison table highlights electrical and mechanical trade-offs so engineers can select a replacement based on verified similarity rather than package name alone.

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ADM483EAR - 250 kbps RS-485 Transceiver | Analog Devices
ADM483EAR

ADM483EAR - 250 kbps RS-485 Transceiver | Analog Devices

Analog Devices ADM483EAR is a low-power, slew-rate-limited RS-485/RS-422 half-duplex transceiver rated for 250 kbps data transmission, supplied from a single 5 V rail and offered in an 8-pin SOIC package. The device combines one differential driver and one differential receiver, supports balanced multipoint bus communication, and provides ±15 kV ESD protection on its bus-facing pins. Its reduced slew rate is intended to limit electromagnetic interference on long or poorly terminated interconnects. An RS-485 transceiver is an interface IC that converts logic-level serial data into a differential physical signal for communication over balanced cabling. It belongs to the transceiver hierarchy within RS-485 and RS-422 interface ICs, where a differential driver transmits logic states onto a twisted-pair bus and a differential receiver converts the returning differential signal into CMOS-compatible logic. The ADM483EAR is designed for half-duplex systems in which the same pair of conductors carries data in either direction, but only one transmitter is active at a time. The ADM483EAR supports operation from a single 4.5 V to 5.5 V supply, a 250 kbps maximum signaling rate, and a ±12 V common-mode range on the bus. These characteristics make it appropriate for industrial equipment, building controls, instrumentation, and embedded systems using balanced multipoint buses. Its ±15 kV ESD protection improves robustness at connector locations where cables can be attached or disconnected, while the reduced slew rate helps reduce edge-related EMI compared with unrestricted-speed line drivers. The receiver incorporates communication-rate and slew-rate limiting to control bus behavior. These functions are especially useful in multipoint networks because they reduce the amount of high-frequency energy placed onto the cable. The device can participate in buses containing up to 32 transceivers, according to the manufacturer datasheet. Because its driver is intended for half-duplex operation, the design must control the driver-enable and receiver-enable inputs so that the bus is not driven during reception. Typical applications include industrial RS-485 links between controllers and sensors, factory-floor equipment, remote I/O modules, building-automation nodes, and instrumentation connected over long shielded or unshielded twisted-pair cables. In these systems, the low 250 kbps rate provides useful tolerance for wiring, propagation delay, reflections, and electromagnetic coupling. The ±12 V bus common-mode capability also helps the receiver tolerate voltage differences between grounded systems connected through the communication cable. PCB design should provide a continuous return path between the transceiver ground and the system ground, keep the differential pair route short where possible, and place termination and protection components near the bus connector. A common-mode choke can reduce conducted emissions when required, but it should be selected for the actual data rate and cable impedance. The supply bypass capacitor should be placed close to the VCC and GND pins to minimize high-frequency supply impedance. This page combines the manufacturer’s electrical limits, interface guidance, verified lifecycle information, package details, drop-in alternatives, and application-oriented design notes. It is intended to help engineers assess protocol compatibility, bus topology, protection strategy, and PCB implementation before integrating the ADM483EAR into an RS-485 or RS-422 design.

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ADM483EARZ-REEL - 5V ±15kV ESD RS-485 Transceiver | Analog Devices
ADM483EARZ-REEL

ADM483EARZ-REEL - 5V ±15kV ESD RS-485 Transceiver | Analog Devices

The Analog Devices ADM483EARZ-REEL is a 5 V, slew-rate-limited, half-duplex RS-485/RS-422 transceiver with ±15 kV ESD protection on the bus pins, supplied in an 8-pin SOIC_N (SO-8) package. It delivers 250 kbps data rate, supports up to 32 nodes on a single bus, and draws only 36 µA supply current, making it a low-power solution for industrial multipoint networks. A transceiver in the RS-485/RS-422 category is a differential line driver/receiver IC that converts a single-ended TTL/CMOS logic signal into a balanced differential signal (and vice versa) for transmission over twisted-pair media. RS-485 transceivers sit at the physical layer of multipoint fieldbus architectures and are widely used because they tolerate large common-mode voltages (-7 V to +12 V) and support long cable runs, with the TIA/EIA-485-A standard allowing up to 32 unit loads on a single bus. Key features include ±15 kV HBM ESD protection per IEC 61000-4-2 air-discharge testing on the bus pins, reduced slew rate to minimize EMI, a single 5 V ±10% supply, open-circuit fail-safe receiver design, thermal shutdown, short-circuit protection on the driver outputs, and a half-duplex (1/1) topology where driver and receiver share the same differential pair. The combination of low quiescent current and integrated ESD protection eliminates external TVS arrays in most designs. The device uses a BiCMOS process that integrates the differential driver, differential receiver, charge pump for fail-safe biasing, and ESD clamp structures on a single die. The reduced-slew-rate driver edges contain common-mode harmonics above 2 MHz, simplifying FCC Class B and EN 55022 EMI compliance on cables up to several hundred meters. Typical applications include industrial fieldbus nodes (Modbus, Profibus DP, BACnet), HVAC and building automation networks, motor and motion control links, smart-grid metering, point-of-sale terminals, and any 5 V MCU/UART-to-RS-485 interface requiring robust ESD protection. Designers should note that the ADM483E shares its bus pinout with industry-standard 8-pin half-duplex RS-485 pinouts such as the MAX485, LTC485, and SP485E, enabling direct footprint compatibility when migrating between families for ESD, speed, or supply current optimization.

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ADM483JR - 250kbps Low-Power RS-485/RS-422 IC | Analog Devices
ADM483JR

ADM483JR - 250kbps Low-Power RS-485/RS-422 IC | Analog Devices

The Analog Devices ADM483JR is a 5 V, low-power, slew-rate-limited half-duplex RS-485/RS-422 differential line transceiver rated for data rates up to 250 kbps and housed in an 8-lead SOIC package. Its principal specifications are 120 µA typical operating supply current, 100 nA shutdown supply current, and a -7 V to +12 V bus common-mode range. According to the manufacturer product page and datasheet information, the ADM483 family is designed for low-power multipoint bus communication. An RS-485/RS-422 transceiver is an interface IC that converts logic-level signals into balanced differential signals for reliable communication over longer cables and noisy environments. The ADM483 combines a differential line driver, differential receiver, and driver-enable control in one package. It sits within the hierarchy of interface IC, communications transceiver, differential line driver and receiver, and semiconductor. Its differential signaling improves noise immunity while supporting half-duplex operation on multipoint buses. The device supports EIA RS-485 and RS-422 operation, data rates to 250 kbps, and as many as 32 transceivers on one bus. Slew-rate limiting reduces electromagnetic interference, while high-impedance outputs when disabled or powered off help prevent bus contention. Thermal shutdown and short-circuit protection improve robustness, and the specified operating-temperature range is -40°C to +85°C. The ADM483 architecture supports low-power communication links where a lower data rate is acceptable and reduced switching activity is valuable. Its 120 µA supply current is suitable for low-power instrumentation and control links, while the 100 nA shutdown current supports power-sensitive systems. The 8-lead SOIC format supports conventional surface-mount assembly and easy transition from through-hole prototype boards to compact production designs. Typical uses include industrial control networks, building-automation equipment, instrumentation, low-speed data acquisition, and RS-485/RS-422 links between distributed modules. The device is particularly appropriate where low EMI, low standby consumption, and a moderate 250 kbps data rate are more important than maximum throughput. It is not intended as a substitute for a high-speed RS-485 transceiver when the application requires data rates above its stated limit. Designers should verify termination, biasing, protection, and grounding in the completed bus. Place the transceiver near the connector, provide a continuous ground reference, and use appropriate surge protection when cables leave the board. The 8-pin SOIC footprint allows straightforward layout, but input and output filtering should be evaluated alongside cable length and external transients. This page combines the verified ADM483 family specifications, sourcing links, practical design guidance, and same-package alternatives to help engineers evaluate a 250 kbps low-power RS-485/RS-422 transceiver.

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ADM483JRZ - 250 kbps RS-485/RS-422 Transceiver | Analog Devices
ADM483JRZ

ADM483JRZ - 250 kbps RS-485/RS-422 Transceiver | Analog Devices

The Analog Devices ADM483JRZ is a 5 V, low-power RS-485/RS-422 differential line transceiver supporting data rates up to 250 kbps in an 8-SOIC package. It combines one driver and one receiver for half-duplex multipoint communications, operates from a 4.75 V to 5.25 V supply, and uses slew-rate-limited edges to reduce electromagnetic interference. An RS-485/RS-422 transceiver is an interface IC that converts logic-level signals into balanced differential transmissions and receives differential signals back into logic-level outputs. The RS-485 standard supports multipoint, half-duplex buses, while RS-422 provides balanced point-to-point or multidrop signaling. These differential interface ICs belong to the broader transceiver and interface IC hierarchy used to connect controllers, sensors, meters, industrial equipment, and communications systems over cables longer than ordinary logic interconnects. Key features include a maximum data rate of 250 kbps, low shutdown supply current of 100 nA, and low operating supply current of 120 µA. The device provides a -7 V to +12 V bus common-mode range and can support up to 32 transceivers on one bus. Driver outputs become high impedance when disabled or powered off, while thermal shutdown and short-circuit protection improve robustness in demanding wired networks. The ADM483 is designed for balanced data transmission over multipoint bus lines and complies with EIA RS-485 and RS-422 interfaces. Its slew-rate-limited output reduces EMI by slowing edge transitions, an important consideration in industrial environments containing clocks, motors, switching supplies, and long cable runs. The receiver provides differential signaling, allowing common-mode voltage differences on the bus to be rejected rather than appearing as noise at the logic interface. Typical applications include industrial control networks, building automation, instrumentation, security equipment, industrial modems, and low-speed data acquisition systems. The 250 kbps rate is appropriate for supervisory communications and control traffic rather than high-bandwidth Ethernet or video transport. Half-duplex operation also requires the system controller to arbitrate bus direction so that only one transmitter drives the pair at a time. For PCB implementation, place the device near the connector and route the differential bus as a controlled-impedance pair. Keep the ground reference close to the signal path and provide low-ESR bypass capacitance at the supply pins. Confirm termination, biasing, protection, and cable-length requirements for the selected RS-485 network because the transceiver alone does not determine the completed bus topology. This page consolidates the ADM483JRZ electrical characteristics, verified package information, drop-in cross-references, interface selection guidance, and practical PCB considerations into a procurement-oriented engineering reference.

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ADM4850AR - 115 kbps RS-485/RS-422 Transceiver | Analog Devices
ADM4850AR

ADM4850AR - 115 kbps RS-485/RS-422 Transceiver | Analog Devices

The Analog Devices ADM4850AR is a 5 V, slew-rate-limited differential line transceiver supporting RS-485 and RS-422 communication at data rates up to 115 kbps. The device is available in an 8-lead SOIC package and supports half-duplex and full-duplex line configurations. Its controlled output slew rate reduces electromagnetic interference, while the integrated receiver includes a true fail-safe function for improved bus behavior when the driver is disabled. A differential line transceiver converts between logic-level digital signals and balanced RS-485 or RS-422 signals. RS-485 is commonly used for multipoint industrial buses because differential signaling improves noise immunity and allows multiple nodes to share a two-wire bus when the system includes proper termination and biasing. RS-422 provides a balanced differential interface commonly used for point-to-point and legacy industrial communication links. The ADM4850AR belongs to the interface IC hierarchy and is positioned where a host UART or other controller must communicate over a physical bus. The principal feature of the ADM4850AR is its reduced slew rate. Slower signal-edge transitions lower the high-frequency content radiated by the driver and can reduce EMI problems in cables, connectors, and surrounding circuitry. The maximum data rate is 115 kbps, making the device appropriate for low- and moderate-speed factory automation, building-control, instrumentation, and embedded equipment links rather than high-speed backplane or storage networking. The ADM4850AR family includes multiple data-rate options, but the ADM4850 is the 115 kbps member. Half-duplex operation shares the driver and receiver path on the same bus pair, whereas full-duplex operation uses separate transmit and receive channels where the circuit topology permits it. Direction control and bus termination must be implemented correctly in the surrounding circuit, especially when the transceiver is used on a multipoint network with multiple drivers. Typical applications include industrial RS-485 links between controllers and sensors, building-automation equipment, remote instrumentation, and embedded data-acquisition systems. The limited data rate and slew rate are useful when long cables, modest connector spacing, and mixed industrial equipment make high-edge-rate drivers less attractive. Firmware should also avoid relying on the transceiver as a termination element because line termination belongs in the external network. For PCB design, place the transceiver close to the connector and bus interface, provide a solid ground reference, and keep differential traces routed as a closely coupled pair. The external network should follow the applicable RS-485 or RS-422 termination and biasing strategy. Confirm the complete pin assignment and operating limits in the manufacturer datasheet before finalizing a layout, especially when changing between half- and full-duplex configurations. This page combines the ADM4850AR interface description, verified product links, practical bus-layout guidance, and carefully scoped replacement criteria. It emphasizes the electrical roles that determine whether an RS-485 transceiver can be substituted without changing the PCB or degrading signal integrity.

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ADM4852AR - 2.5Mbps RS-485 Transceiver | Analog Devices
ADM4852AR

ADM4852AR - 2.5Mbps RS-485 Transceiver | Analog Devices

The Analog Devices ADM4852AR is a 5 V slew-rate-limited half-duplex and full-duplex RS-485/RS-422 differential line transceiver operating at data rates up to 2.5 Mbps. The device is offered in an 8-lead SOIC package and combines a differential driver, differential receiver, true fail-safe receiver behavior, and low-emissions operation for reliable data communication across multipoint bus transmission lines. An RS-485 transceiver is an interface IC that converts logic-level signals into balanced differential signals for transmission over long, noisy cables, then converts incoming differential signals back into receiver-compatible logic. RS-485 belongs to the differential line-interface class within interface ICs and is widely used for industrial communication. RS-422 provides a related point-to-point differential signaling method, allowing one ADM4852-family device to address both common multipoint and dedicated-driver communication needs. The ADM4852 family provides data-rate choices across multiple communication speeds, while the ADM4852 specifically supports operation up to 2.5 Mbps. Reduced slew rates are designed to limit high-frequency harmonics and electromagnetic interference, which is valuable when cables, connectors, or adjacent circuitry make EMI compliance difficult. The true fail-safe receiver feature improves behavior when the bus is idle, disconnected, or exposed to bus termination faults. The family supports half-duplex and full-duplex configurations, allowing the same transceiver technology to serve shared multidrop buses and dedicated point-to-point links. Half-duplex operation requires bus-direction control so that the driver and receiver do not contend simultaneously. Full-duplex operation uses separate differential data paths and can simplify communication timing when simultaneous transmission and reception are required. Typical uses include industrial control networks, building automation equipment, instrumentation links, factory data buses, and embedded systems communicating with remote sensors or controllers. The 2.5 Mbps rate is appropriate for moderately high-speed industrial links, while the slew-rate control helps suppress unwanted radiated emissions. Board-level implementation still requires correct termination, biasing, grounding, and protection according to the bus topology. Design around the supply range, driver output limits, receiver thresholds, and maximum cable length rather than treating the 2.5 Mbps figure as a universal bus rate. Keep the transceiver and protection components close to the connector, maintain a continuous return path, and validate the complete network under its worst-case cable length, topology, and loading. The manufacturer datasheet provides the authoritative pin assignment, timing limits, electrical characteristics, and application diagrams. This product page consolidates the manufacturer’s device description, exact-MPN pricing evidence, package information, pin-compatible replacement analysis, application guidance, and practical interface-design considerations into a focused engineering reference for evaluating the ADM4852AR in RS-485 and RS-422 systems.

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ADM485AN - 5V RS-485/RS-422 Transceiver | Analog Devices
ADM485AN

ADM485AN - 5V RS-485/RS-422 Transceiver | Analog Devices

The Analog Devices ADM485AN is a 5 V low-power EIA RS-485 and RS-422 differential line transceiver rated for data rates up to 5 Mbit/s, supplied in an 8-pin PDIP package. It combines one driver and one receiver for bidirectional communication on multipoint bus transmission lines, while low propagation-delay skew helps limit electromagnetic interference. An RS-485 transceiver is an interface IC that converts logic-level digital signals into balanced differential signals for reliable communication over longer cables and noisy industrial environments. Its differential signaling improves noise immunity, enables bidirectional half-duplex buses, and supports multiple nodes when the complete bus is properly terminated and biased. The RS-422 capability provides another balanced-line interface option for point-to-point or multidrop systems. The ADM485 family is specified for both commercial and industrial temperature operation. Key application benefits include a maximum data rate of 5 Mbit/s, low-power 5 V operation, and fast switching. The ADM485AN uses the N-tube PDIP-8 package identified in distributor data, making it suitable for conventional through-hole PCB assembly rather than surface-mount production. In a typical bus design, the transceiver connects a microcontroller UART to an A and B differential pair. The logic-side supply operates from 5 V, and a driver-enable signal controls whether the transmitter or receiver participates in bus communication. Receiver enable may be managed by the same control signal for half-duplex operation, or controlled separately where full-duplex behavior is required. Proper RS-485 implementation depends on more than substituting the IC. The differential pair should be routed as a controlled-impedance cable connection, the transceiver ground reference must be managed carefully, and only the intended endpoint terminations should be installed. External protection may be needed when exposed cables carry electrostatic discharge or surge events. This page combines verified manufacturer and distributor information with practical interface guidance, replacement criteria, and design cautions. The ADM485AN should be selected when an 8-pin through-hole RS-485/RS-422 transceiver is required and its documented 5 Mbit/s capability matches the intended bus length, topology, noise environment, and system timing.

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ADM485ANZ - 5V 5Mbps RS-485 Transceiver | Analog Devices
ADM485ANZ

ADM485ANZ - 5V 5Mbps RS-485 Transceiver | Analog Devices

The Analog Devices ADM485ANZ is a 5 V low-power differential line transceiver for bidirectional multipoint bus communications, supporting both EIA RS-485 and RS-422 in an 8-pin PDIP package. It combines one differential line driver with one differential receiver, and the manufacturer specifies operation at data rates up to 5 Mbit/s with low skew to minimize EMI interference. An RS-485 transceiver is an interface IC that converts single-ended logic signals into balanced differential signals for reliable communication over longer, noisy cables. It belongs to the communication-interface hierarchy that includes RS-422 and RS-232 interface ICs, with the differential driver and receiver providing noise immunity, common-mode rejection, and multipoint-bus capability. The ADM485ANZ is suited to industrial, instrumentation, and embedded systems requiring bidirectional data transfer. The ADM485 family supports independently controlled driver and receiver sections, allowing the transmitter and receiver to be disabled for low-power operation or configured for bus applications. Key characteristics include a 5 V supply, data rates up to 5 Mbit/s, and support for both RS-485 and RS-422. Its differential signaling reduces sensitivity to externally coupled noise compared with single-ended digital communication. The small-signal architecture requires careful treatment of supply bypassing, grounding, and high-speed transmission lines. Because the ADM485ANZ supports data rates up to 5 Mbit/s, PCB trace impedance, connector geometry, cable characteristics, termination, and common-mode behavior can materially affect signal integrity. The 8-pin PDIP package is also easy to prototype and inspect, although it occupies more board area than surface-mount alternatives. Typical applications include industrial process-control links, factory automation equipment, data acquisition systems, building-control networks, instrumentation buses, and embedded host interfaces. The device can support bidirectional communication when the driver and receiver are enabled together, or half-duplex bus operation when local bus management is required. Designers should place the supply bypass capacitor close to the VCC pin, route the differential pair as a tightly coupled pair, and avoid placing high-current return paths beneath the transceiver. External termination, biasing, protection, and galvanic isolation should be selected from the cable length, baud rate, topology, and environmental conditions rather than applied unconditionally. This product page combines the manufacturer's core ADM485 specifications with practical interface-design guidance, package details, sourcing information, and verified cross-reference candidates. The comparison material focuses on pin compatibility, data-rate support, supply requirements, and application fit so engineers can evaluate replacements without confusing merely similar RS-485 devices with true board-level alternatives.

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ADM485AQ - 5 V Low-Power RS-485/422 Transceiver | Analog Devices
ADM485AQ

ADM485AQ - 5 V Low-Power RS-485/422 Transceiver | Analog Devices

The Analog Devices ADM485AQ is a 5 V low-power differential line transceiver for balanced RS-485 and RS-422 communication, with data rates up to 5 Mbit/s and an 8-pin ceramic DIP package. It combines one line driver and one receiver for bidirectional multipoint-bus links, industrial control, instrumentation, and data acquisition. An RS-485 transceiver is an interface IC that converts single-ended logic signals into a differential signal and receives differential signals back into logic levels. Its differential signaling improves noise immunity and allows reliable communication over longer cable runs. The ADM485 belongs to the RS-485/RS-422 transceiver family within interface ICs and the broader industrial-communications semiconductor hierarchy. Key verified features include support for both EIA RS-485 and RS-422, operation from a single 5 V supply, extremely fast switching speeds, minimal driver propagation delay, and operation over the commercial and industrial temperature range. The analog.devices.com product description specifically highlights data rates up to 5 Mbit/s and low skew for reduced EMI interference. The AQ package designation identifies the ceramic-DIP ordering option represented by the verified distributor listings. The device is intended for balanced data transmission on multipoint bus transmission lines. Its driver and receiver architecture supports robust two-wire RS-485 networks as well as compatible RS-422 point-to-point or multidrop arrangements, subject to the system-level termination and biasing requirements specified in the manufacturer documentation. The 5 V supply simplifies interfacing with conventional digital logic systems. Typical uses include industrial automation controllers, sensor and instrumentation links, factory data buses, laboratory equipment, and embedded control systems. For a new board, verify the exact ceramic-DIP footprint, pin orientation, supply decoupling, cable termination, and protection requirements before layout release. ADM485AQ is not an automotive-qualified transceiver in the verified data. This page combines the verified ADM485 product-page information, distributor pricing references, package details, and replacement guidance for engineers evaluating an 8-pin ceramic-DIP RS-485 interface. Because the supplied source excerpts do not expose the complete electrical tables, pin names, lifecycle statement, or certified drop-in replacement list, missing values remain explicitly marked as data-needed rather than inferred.

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ADM485AR - Low-Power RS-485/RS-422 Transceiver | Analog Devices
ADM485AR

ADM485AR - Low-Power RS-485/RS-422 Transceiver | Analog Devices

The Analog Devices ADM485AR is a 5 V low-power differential line transceiver for high-speed bidirectional communication over multipoint RS-485 and RS-422 bus lines, supplied in an 8-pin SOIC package. The verified source material identifies the device as a one-driver, one-receiver RS-422/RS-485 transceiver; detailed drive rate, receiver sensitivity, common-mode limits, supply-current limits, and package dimensions were not provided in the supplied snippets and remain to be confirmed from the manufacturer datasheet. An RS-485 transceiver is an interface IC that combines a differential line driver, differential receiver, and bidirectional bus-control logic. It converts logic-level signals between a host or controller and a balanced cable, allowing noise rejection and reliable communication over longer distances than an unbalanced interface. In the system hierarchy, the ADM485AR belongs to interface ICs and transceiver ICs, where differential signaling supports multipoint industrial, instrumentation, and automation buses. The verified Analog Devices description confirms that the ADM485 is intended for balanced data transmission and complies with EIA RS-485 and RS-422 standards. Both the driver and receiver can be enabled according to the manufacturer result, which supports controlled bus operation and integration with external direction-control logic. The ADM485AR part number is associated with an 8-SOIC package in the DigiKey result. Applications include industrial control systems, factory automation equipment, instrumentation, building-control networks, and other balanced multipoint communication links. The differential architecture helps reject common-mode noise, while the external bus transceiver architecture makes cable termination, biasing, grounding, and protection important design considerations. For a new board, use the official manufacturer datasheet to verify the complete pinout, electrical limits, recommended circuit, and package dimensions before layout. This page distinguishes verified facts from parameters that require confirmation and does not infer unprovided ratings or timing values. The useful comparison point is not merely the RS-485 label: check driver and receiver enable behavior, bus direction control, fail-safe behavior, ESD protection, common-mode range, propagation delay, and package pin compatibility. Those details determine whether another part is a true drop-in replacement.

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ADM485ARZ - 5V 5Mbps Half-Duplex RS-485/RS-422 Transceiver | Analog Devices (Tape & Reel)
ADM485ARZ

ADM485ARZ - 5V 5Mbps Half-Duplex RS-485/RS-422 Transceiver | Analog Devices (Tape & Reel)

The Analog Devices ADM485ARZ is a 5 V low-power EIA RS-485/RS-422 differential line transceiver in an 8-pin SOIC (SO-8) package, supporting half-duplex communication at data rates up to 5 Mbps. It provides one driver and one receiver per channel, with dedicated differential line driver outputs and receiver inputs that comply with both EIA RS-485 and RS-422 standards for balanced multipoint bus transmission. An RS-485 transceiver is a physical-layer interface IC that converts a single-ended TTL/CMOS logic signal into a differential signal transmitted across a twisted-pair cable, then converts the differential signal back into a single-ended logic signal at the receiver. This differential signaling rejects common-mode noise and allows reliable communication over cable lengths up to 1200 m, making RS-485 the most common wired bus for industrial multipoint networks. RS-485 transceivers fall under the broader category of interface ICs in the data-communication PHY layer. Key features of the ADM485ARZ include 5 Mbps signaling rate, low power consumption suitable for 5 V single-supply operation, independent driver/receiver enable pins, thermal-shutdown protection, current limiting on the driver outputs, and receiver fail-safe for an open, shorted, or idle bus. The wide common-mode range of -7 V to +12 V exceeds the EIA-485 requirement of -7 V to +12 V, allowing robust operation in electrically noisy industrial environments. Technically, the ADM485 uses a bipolar CMOS process with a 1 driver + 1 receiver half-duplex topology. Minimal driver propagation delays permit high-speed transmission while low skew minimizes EMI emissions - a key consideration when the part is placed near sensitive analog circuits inside PLCs and motor drives. Designed for industrial multipoint bus transmission, telematics, and embedded networking, the ADM485ARZ fits any application where multiple nodes must communicate reliably over a single twisted pair: factory-floor PLC links, building-automation networks, security and surveillance panels, and HVAC fieldbus nodes. The 8-pin SOIC footprint is industry-standard for RS-485 PHYs, simplifying PCB layout and second-sourcing. A key design tip: place 100 ohm termination only at the two physical ends of the bus; stub lengths must be kept short to suppress signal integrity issues at 5 Mbps. The RE/DE pins allow hardware-driven direction control; tie RE high and use DE to switch direction if the host UART does not natively manage bus direction. This page synthesizes distributor pricing, drop-in same-package alternatives, and SOIC-8 PCB layout guidance not aggregated into the manufacturer datasheet.

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ADM485ARZ-REEL - 5V 5Mbps Half-Duplex RS-485/RS-422 Transceiver | Analog Devices
ADM485ARZ-REEL

ADM485ARZ-REEL - 5V 5Mbps Half-Duplex RS-485/RS-422 Transceiver | Analog Devices

The Analog Devices ADM485ARZ-REEL is a 5 V low-power EIA RS-485/RS-422 differential line transceiver in an 8-pin SOIC (SO-8) package, supporting half-duplex communication at data rates up to 5 Mbps. It provides one driver and one receiver per channel, with dedicated differential line driver outputs and receiver inputs that comply with both EIA RS-485 and RS-422 standards for balanced multipoint bus transmission. An RS-485 transceiver is a physical-layer interface IC that converts a single-ended TTL/CMOS logic signal into a differential signal transmitted across a twisted-pair cable, then converts the differential signal back into a single-ended logic signal at the receiver. This differential signaling rejects common-mode noise and allows reliable communication over cable lengths up to 1200 m, making RS-485 the most common wired bus for industrial multipoint networks. RS-485 transceivers fall under the broader category of interface ICs in the data-communication PHY layer. Key features of the ADM485ARZ-REEL include 5 Mbps signaling rate, low power consumption suitable for 5 V single-supply operation, independent driver/receiver enable pins, thermal-shutdown protection, current limiting on the driver outputs, and receiver fail-safe for an open, shorted, or idle bus. The wide common-mode range of -7 V to +12 V exceeds the EIA-485 requirement of -7 V to +12 V, allowing robust operation in electrically noisy industrial environments. Technically, the ADM485 uses a bipolar CMOS process with a 1 driver + 1 receiver half-duplex topology. Minimal driver propagation delays permit high-speed transmission while low skew minimizes EMI emissions - a key consideration when the part is placed near sensitive analog circuits inside PLCs and motor drives. Designed for industrial multipoint bus transmission, telematics, and embedded networking, the ADM485ARZ-REEL fits any application where multiple nodes must communicate reliably over a single twisted pair: factory-floor PLC links, building-automation networks, security and surveillance panels, and HVAC fieldbus nodes. The 8-pin SOIC footprint is industry-standard for RS-485 PHYs, simplifying PCB layout and second-sourcing. A key design tip: place 100 ohm termination only at the two physical ends of the bus; stub lengths must be kept short to suppress signal integrity issues at 5 Mbps. The RE/DE pins allow hardware-driven direction control; tie RE high and use DE to switch direction if the host UART does not natively manage bus direction. This page synthesizes distributor pricing, drop-in same-package alternatives, and SOIC-8 PCB layout guidance not aggregated into the manufacturer datasheet.

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ADM485JN - 5V 5Mbps RS-485 Transceiver | Analog Devices
ADM485JN

ADM485JN - 5V 5Mbps RS-485 Transceiver | Analog Devices

Analog Devices ADM485JN is a 5 V, low-power differential RS-485 and RS-422 transceiver capable of operation at data rates up to 5 Mbit/s, supplied in an 8-pin PDIP package. The device combines a differential line driver and a differential line receiver, supporting balanced transmission over multipoint bus systems. Its principal specifications include a single +5 V supply, a ±12 V bus common-mode range, 10 ns driver propagation delay, short-circuit protection, and thermal shutdown protection. An RS-485 transceiver is an interface IC that converts logic-level signals into balanced differential signals for reliable communication over longer distances and noisy environments. It belongs to the EIA RS-485 and RS-422 interface hierarchy, where differential signaling improves noise immunity by comparing the voltage between two conductors rather than referencing the signal to ground. The ADM485JN supports both receiver and driver enable control, allowing a node to transmit, receive, or remain in a high-impedance state. Key features include a maximum data rate of 5 Mbit/s, zero-skew driver propagation delay, and a +12 V bus common-mode range. These characteristics suit communication links where low signal distortion, high bus speed, or recovery from an electrical fault matters. The receiver and driver are independently enabled, supporting multidrop bus arrangements and designs in which a shared transceiver must avoid contending with other transmitters. The BiCMOS implementation combines bipolar input and output characteristics with CMOS power efficiency. According to the Analog Devices product page, minimal driver propagation delay permits data rates up to 5 Mbit/s, while low skew minimizes EMI interference. The device also provides short-circuit protection and thermal shutdown, helping contain fault conditions when the bus driver drives into a low-impedance or shorted network. Typical applications include industrial RS-485 buses, building-automation networks, instrumentation links, data acquisition systems, telecommunications equipment, and embedded serial networks. The balanced differential interface is particularly useful where cables run near motors, switching power supplies, or other sources of electromagnetic interference. Multi-drop communication requires careful termination, biasing, grounding, and node-enable sequencing to prevent multiple drivers from simultaneously driving the bus. For implementation, place input and output bypassing capacitors close to the supply pins, use a proper termination network at each end of the bus, and verify the common-mode range under worst-case ground-potential differences. The 8-pin PDIP package facilitates through-hole construction and prototyping, although modern production designs may favor a smaller surface-mount package. Engineers should also confirm cable length, topology, data rate, and grounding against the system’s RS-485 implementation requirements. This page combines verified manufacturer and distributor information with practical bus-design guidance, side-by-side replacement analysis, pin-package constraints, and application-focused engineering context. The comparisons and recommendations are limited to evidenced drop-in candidates so that PCB compatibility is not confused with merely similar functionality.

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ADM485JNZ - 5V 5Mbps RS-485/422 Transceiver | Analog Devices
ADM485JNZ

ADM485JNZ - 5V 5Mbps RS-485/422 Transceiver | Analog Devices

Analog Devices ADM485JNZ is a 5 V low-power EIA RS-485 and RS-422 differential line transceiver with one driver and one receiver, a maximum data rate of 5 Mbps, and an 8-pin PDIP package. It is designed for balanced, high-speed, bidirectional data communication over multipoint bus transmission lines. The 5 V single-supply operating range of 4.75 V to 5.25 V supports conventional industrial and communications equipment. A differential line transceiver is an interface IC that combines a transmit driver and receive comparator for balanced communication links. Within the hierarchy of interface ICs, the ADM485JNZ belongs to the RS-485/RS-422 transceiver class and converts logic-level signals into noise-resistant differential bus signals. This category supports communication between distributed nodes over longer cables than ordinary single-ended logic interfaces. Key features include a 5 Mbps maximum data rate, low-power BiCMOS construction, fast switching behavior, a +12 V bus common-mode range, and protection against short-circuit and thermal overload. The device provides separate driver-enable and receiver-enable control, allowing the transmitter and receiver to be switched independently. These characteristics suit industrial control, instrumentation, factory automation, and other multidrop systems where reliable signaling and controlled bus contention are important. The ADM485 uses differential signaling to improve noise immunity and reduce electromagnetic-interference emissions relative to a single-ended interface. Minimal driver propagation delay permits high-speed transmission, while low skew helps reduce EMI interference between transitions. Because the verified product description identifies one transmitter and one receiver, systems requiring multiple bus nodes must add additional transceivers rather than treating the part as a multi-drop controller. Typical applications include RS-485 industrial networks, RS-422 point-to-point links, programmable logic controller and sensor interfaces, building-automation equipment, and factory data buses. In these systems, the ADM485JNZ can sit between a host UART or microcontroller and a twisted-pair bus. Termination, biasing, grounding, and protocol-level turnaround control remain important system-level considerations. When implementing the interface, verify the 4.75 V to 5.25 V supply requirement and design the bus network with appropriate termination at the physical endpoints. Avoid relying on the transceiver alone for surge, ground-offset, or isolated protection. The 8-pin PDIP package is also mechanically incompatible with the SOIC and MSOP versions of the ADM485 family, making package selection critical during replacement. This product analysis consolidates verified manufacturer information, distributor pricing, package details, lifecycle data, and pin-to-pin replacement guidance. It also distinguishes the available same-footprint alternatives from surface-mount and cross-package family variants so engineers can make a replacement decision without assuming electrical equivalence implies mechanical compatibility.

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ADM485JR - 5Mbps RS-485/422 Transceiver | Analog Devices
ADM485JR

ADM485JR - 5Mbps RS-485/422 Transceiver | Analog Devices

The Analog Devices ADM485JR is a 5 V low-power differential line transceiver supporting RS-485 and RS-422 communication at data rates up to 5 Mbit/s, packaged in an 8-pin SOIC. It combines an RS-485 driver and differential receiver with independently controlled driver and receiver enables for full-duplex or half-duplex bus designs. An RS-485 transceiver is an interface IC that converts logic-level digital signals into balanced differential signals for reliable communication over noisy or long cable runs. In the signal-chain hierarchy, it belongs to the RS-485/RS-422 interface transceiver category within integrated interface circuits. Its differential signaling improves noise immunity by representing the transmitted signal as the voltage difference between two conductors. Key features include support for data rates up to 5 Mbit/s, a 5 V supply, low-power operation, and independently enabled driver and receiver sections. The fast switching performance minimizes propagation-delay mismatch and skew, helping reduce EMI on high-speed buses. The device is also specified over commercial and industrial temperature ranges and is available in an 8-pin DIL or SOIC package family. The ADM485 architecture includes a differential line driver with dedicated outputs and a differential line receiver with dedicated inputs. Independent enable control allows a node to remain transparent, transmit only, receive only, or support half-duplex bus operation. This flexibility makes the transceiver suitable for multipoint communication where bus direction and node participation must be controlled independently. Typical uses include industrial automation equipment, building-control networks, instrumentation, data acquisition, computer interfaces, and communication links between distributed modules. At 5 Mbit/s, the part can support high-speed balanced data transfer, while the 8-pin SOIC package simplifies assembly on conventional surface-mount PCB designs. Designers should pay attention to termination, biasing, common-mode range, and transceiver enable timing. The manufacturer datasheet also discusses excessive power dissipation caused by bus contention or output shorting, making it important to prevent multiple enabled drivers from driving the bus at the same time. Cable length, topology, and transceiver speed must be considered together because high data rates generally require shorter, better-controlled buses. This page consolidates the verified manufacturer information, distributor pricing, replacement considerations, and application-specific engineering guidance into one practical reference for engineers evaluating the ADM485JR.

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ADM485JRZ - 5V 5Mbps RS-485 Transceiver | Analog Devices
ADM485JRZ

ADM485JRZ - 5V 5Mbps RS-485 Transceiver | Analog Devices

Analog Devices ADM485JRZ is a 5 V low-power half-duplex RS-485 and RS-422 transceiver with a maximum data rate of 5 Mbits/s, supplied in an 8-pin SOIC package. The device supports balanced differential data transmission over multipoint bus lines, with independently controlled driver and receiver sections for flexible half-duplex communication. An RS-485 transceiver is a physical-layer interface IC that converts logic-level signals into differential bus signals and receives differential bus signals back into logic-level outputs. In the product hierarchy, it is a differential line transceiver within interface ICs and a semiconductor. Its differential signaling improves common-mode noise immunity, while the RS-485 standard supports communication over shared multipoint cabling when correctly terminated and biased. The ADM485 family combines a 5 Mbit/s data rate with low-power operation and short propagation delays. These characteristics suit industrial communication links where low channel skew and rapid switching help reduce timing margins and electromagnetic-interference concerns. Its 8-pin SOIC package also provides a small surface-mount footprint for compact interface sections in control systems, instrumentation, and communications equipment. The architecture includes dedicated differential driver outputs and receiver inputs, and both functions can be enabled independently according to the cited component description. Independent control supports bus designs that need to listen without actively driving the line, as well as arrangements where transmit and receive timing is managed by external control logic. Exact propagation-delay, slew-rate, and power-consumption values are not supplied in the verified excerpts and should be taken from the manufacturer datasheet. Typical uses include industrial RS-485 buses, RS-422 point-to-point links, factory data acquisition, building-control networks, instrumentation, and data communications between embedded controllers and peripheral modules. For multipoint RS-485 networks, cable length, topology, termination, biasing, and common-mode limits must be evaluated together; the transceiver alone does not determine reliable maximum bus distance. The primary design consideration is verifying pin functions, supply sequencing, signal polarity, and transceiver-enable timing against the exact ADM485JRZ datasheet. Designers should also use the manufacturer-specified protection and bypass strategies, provide a clean 5 V supply, and validate termination and fail-safe behavior across cable lengths and system grounding conditions. This page consolidates the verified manufacturer and distributor information, compares potential SOIC-8 replacements, and adds application guidance and design checks that help engineers evaluate ADM485JRZ beyond a basic distributor specification table.

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ADM488AN - 250kbps Full-Duplex RS-485 IC | Analog Devices
ADM488AN

ADM488AN - 250kbps Full-Duplex RS-485 IC | Analog Devices

The Analog Devices ADM488AN is a 5V, low-power, full-duplex, slew-rate-limited EIA RS-485 transceiver rated for data rates up to 250kbps, supplied in an 8-pin PDIP package. It combines one differential driver and one differential receiver, supports ±12V bus common-mode range, and provides 12kΩ receiver input impedance. According to the manufacturer ADM488 data sheet, the device is intended for balanced data transmission and complies with EIA RS-485 and RS-422 interfaces. An RS-485 transceiver is an interface IC that converts logic-level signals into balanced differential signals for reliable communication over long, multipoint copper buses. The differential signal helps reject common-mode noise, while the receiver converts the differential bus voltage back into a logic-level output. The ADM488 belongs to the broader RS-485 transceiver, communications interface, interface IC, and semiconductor hierarchy. Key features include a maximum 250kbps data rate, a single 5V supply, low power operation, and slew-rate-limited outputs that reduce unwanted high-frequency EMI. The receiver's 12kΩ input impedance supports practical bus loading, while the ±12V common-mode range accommodates signaling variations in industrial environments. The device also meets the EIA RS-485 standard and includes 2kV EFT protection according to the cited manufacturer and datasheet listings. The ADM488 and ADM489 family is designed for balanced differential communication on multipoint bus transmission lines. Full-duplex operation supports separate transmit and receive paths, which is useful when a node must communicate while monitoring another channel. Slew-rate limiting helps control edge rates and reduce electromagnetic emissions, although cable length, termination, biasing, and grounding remain application-level requirements. Typical applications include industrial control networks, building automation, instrumentation, factory equipment, and isolated or non-isolated RS-485 data links. The 8-pin PDIP package is suitable through-hole assembly where a robust, inspectable package is preferred. The manufacturer lists the ADM488 as a production device, but exact stock, lead time, and price are not available in the supplied data. For a new design, verify the complete pinout, receiver enable or shutdown behavior, bus termination, fail-safe biasing, and isolation strategy against the exact datasheet revision before layout. Do not substitute a part solely by function; the alternative must use the same package footprint and be pin-to-pin compatible. This page combines manufacturer information, distributor availability, and verified cross-reference results into a practical sourcing and design reference.

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ADM488ANZ - 250 kbps RS-485 Transceiver | Analog Devices
ADM488ANZ

ADM488ANZ - 250 kbps RS-485 Transceiver | Analog Devices

The Analog Devices ADM488ANZ is a 5 V, full-duplex RS-422/RS-485 interface transceiver with one driver and one receiver, a 250 kbps data rate, and an 8-pin PDIP package. Its supply-voltage range is 4.5 V to 5.5 V, making it suitable for conventional 5 V industrial, instrumentation, and embedded communications systems. An RS-485 transceiver is an interface IC that combines a differential line driver and differential receiver on a communications bus. In the hierarchy of electronic components, the ADM488ANZ is a line-interface transceiver, a type of interface IC and semiconductor. RS-422 supports point-to-point differential signaling, while RS-485 supports multipoint buses with more stringent driver-enable and grounding considerations. The ADM488ANZ can address both applications in one 8-pin device. The ADM488ANZ provides a 250 kbps maximum data rate, low-power operation, and slew-rate-limited outputs. Full duplex permits simultaneous transmission and reception, unlike half-duplex transceivers that require a shared driver and receiver bus. The 4.5 V to 5.5 V operating range also simplifies connection to 5 V digital logic when its interface levels are compatible with the host device. According to the Analog Devices manufacturer datasheet, the ADM488ANZ meets EIA RS-485 and RS-422 standards. The device uses a differential data path to support noise-resistant communications over cables and longer interconnects. Its slew-rate-limited driver helps control the transition rate on the bus, reducing high-frequency EMI compared with an unrestricted driver while maintaining a useful 250 kbps operating rate. Typical uses include industrial control links, laboratory instrumentation, building automation, data-acquisition systems, and embedded equipment requiring full-duplex RS-422 or RS-485 communication. The device can also participate in networks using protocol converters, sensor interfaces, or remote monitoring units. Its 8-pin PDIP package favors through-hole construction and easy prototype replacement rather than high-density automated assembly. For reliable bus operation, confirm the cable length, topology, termination strategy, grounding method, and driver-enable behavior for the selected protocol. Keep differential traces closely coupled where practical, route the pair away from switching nodes and high-current paths, and follow the manufacturer pin-description table when making PCB assignments. Do not assume that a full-duplex RS-422 connection can be replaced directly with a half-duplex RS-485 topology. This page combines the ADM488ANZ device specifications, package information, sourcing guidance, comparison criteria, and practical interface-design notes. It helps engineers distinguish protocol, speed, package, and bus-topology differences before selecting a replacement or laying out a new communication interface.

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ADM488AR - 250kbps Low-Power RS-485 Transceiver | Analog Devices
ADM488AR

ADM488AR - 250kbps Low-Power RS-485 Transceiver | Analog Devices

The Analog Devices ADM488AR is a 5 V, low-power, full-duplex, slew-rate-limited EIA RS-485/RS-422 differential line transceiver rated for data rates up to 250 kbps in an 8-lead SOIC package. It supports multipoint balanced data transmission while limiting bandwidth to reduce unwanted high-frequency harmonics and reflections. Key verified features include a ±12 V bus common-mode range, 12 kΩ input impedance, and 2 kV EFT protection. The device is intended for industrial, commercial, and instrumentation networks requiring robust differential communications. An RS-485 transceiver is an interface IC that combines a differential driver and receiver, converting logic-level signals into balanced bus signals and restoring weak or noisy bus logic levels at the receiving endpoint. In the component hierarchy, the ADM488AR is an RS-485 transceiver, an interface IC, a communications semiconductor, and a physical-layer device supporting EIA RS-485 and RS-422 networks. Full duplex provides separate transmit and receive paths, allowing a node to send and receive independently when its bus architecture supports that operation. The verified electrical features emphasize low power, controlled edges, and multipoint-bus robustness. A single 5 V supply with ±10% tolerance simplifies interface design, while 12 kΩ receiver loading permits more devices on a bus than lower-impedance receivers. The ±12 V common-mode range covers a substantial portion of industrial ground-offset conditions. Slew-rate limiting is particularly useful when slower, rounded edges reduce EMI and ringing, although cable length, topology, termination, and data rate remain system-level constraints. The ADM488AR family is specified for EIA RS-485 and RS-422 communication, as described by Analog Devices. The AR ordering code identifies the verified surface-mount package configuration, while the manufacturer product page identifies the family as a production product. Exact pin names, temperature range, supply-current limits, receiver thresholds, driver-output levels, package dimensions, and absolute maximum ratings were not available in the supplied excerpts and therefore must be confirmed from the manufacturer datasheet before layout or qualification. Typical uses include industrial automation links, building-control networks, instrumentation buses, factory equipment, remote sensor interfaces, and embedded data links. The 250 kbps ceiling favors moderate-speed control and monitoring rather than high-bandwidth Ethernet or very fast storage interfaces. In a full-duplex design, pair the driver and receiver with the bus transceiver's specified pins, route differential traces as a controlled impedance pair, and apply termination and biasing only where required by the network architecture. The principal design consideration is that slew-rate limiting is a system tradeoff rather than a universal solution. Rounded transitions can reduce high-frequency content, but overly slow edges consume signal rise-time budget and may prevent reliable operation at the maximum 250 kbps rate over long cables. PCB symmetry, connector return paths, grounding, cable type, node spacing, common-mode behavior, and protection placement must be validated together. This page combines verified Analog Devices family information, distributor evidence, sourcing status, interface-application guidance, and a strict drop-in comparison framework. It also distinguishes confirmed specifications from unavailable values, helping engineers identify which details require direct review of the official ADM488 datasheet and package drawings before release to production.

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ADM489AN - Low-Power RS-485/RS-422 Transceiver | Analog Devices
ADM489AN

ADM489AN - Low-Power RS-485/RS-422 Transceiver | Analog Devices

The Analog Devices ADM489AN is a low-power differential line transceiver designed for RS-485 and RS-422 communication over multipoint bus transmission lines. The device combines one transmitter and one receiver in a 14-pin PDIP package and operates from a 4.5 V to 5.5 V supply. Its differential signaling supports balanced data transmission while slew-rate limiting helps control unwanted reflections and ringing on terminated communication buses. The ADM489AN is intended for industrial, instrumentation, communications, and embedded systems that require an EIA RS-485 or RS-422 interface. An RS-485/RS-422 transceiver is an interface integrated circuit that converts between single-ended logic signals and differential line signals. The differential receiver evaluates the voltage difference between the positive and negative bus conductors, improving noise immunity and allowing reliable data transmission over longer cable runs. In a multipoint network, multiple transceivers can share the same bus when the network is properly terminated and configured. The ADM489 family combines this physical-layer signaling function with low-power operation and slew-rate-controlled outputs. The verified product information identifies the ADM489 as a single RS-422/RS-485 transceiver with one driver and one receiver. Its 4.5 V to 5.5 V supply range is suitable for conventional 5 V digital systems, while the 14-pin PDIP package supports through-hole PCB assembly and prototype development. The product is suitable for industrial control equipment, data acquisition systems, instrument interfaces, building automation equipment, and other balanced communication links. The ADM489AN designation identifies the Analog Devices PDIP-14 version of the ADM489 family. The differential bus interface allows the transmitter and receiver to share the same physical cable pair. In a transmitting state, the driver produces a differential voltage across the bus. In a receiving state, the receiver converts that differential voltage into a logic-level output for the host controller or digital interface. This arrangement reduces sensitivity to common-mode voltage and electrical noise relative to single-ended signaling. Proper cable length, termination, grounding, and transceiver configuration remain important because the transceiver does not remove the need for correct network design. A typical RS-485 application connects the transceiver between a microcontroller or programmable logic controller and a field bus. The microcontroller drives the transmitter input and receives the receiver output, while the transceiver connects to the A and B differential conductors. An RS-422 point-to-point system can also use the same type of balanced interface. Because the ADM489AN operates from a 4.5 V to 5.5 V supply, the surrounding logic must use compatible voltage levels and provide suitable input and output interfacing. For PCB layouts using the PDIP-14 version, place decoupling capacitors close to the supply pins and route the differential bus with matched, symmetric geometry wherever practical. Keep the transceiver-side bus traces away from noisy switching nodes and high-current return paths. Termination should be placed at the physical ends of the bus rather than at every node. The receiver and driver enable functions should be controlled so that the bus is not driven in an unintended state during reset or power sequencing. This product page combines the verified Analog Devices product information, distributor package details, pricing availability, and cross-reference findings for the ADM489AN. It also highlights the practical RS-485/RS-422 design considerations that are not apparent from the part number alone: the 4.5 V to 5.5 V supply range, the 14-pin PDIP package, the single-driver/single-receiver architecture, and the requirement to validate each candidate replacement against the original datasheet before PCB substitution.

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ADM489ANZ - 250kbps RS-485/RS-422 Transceiver | Analog Devices
ADM489ANZ

ADM489ANZ - 250kbps RS-485/RS-422 Transceiver | Analog Devices

The Analog Devices ADM489ANZ is a full-duplex, low-power, slew-rate-limited differential line transceiver designed for EIA RS-485 and RS-422 communication networks. It provides one driver and one receiver, operates from a 4.5 V to 5.5 V supply, supports data rates up to 250 kbps, and is packaged in a 14-pin PDIP. The device also provides a ±10% supply variation tolerance for the ADM489ANZ grade. An RS-485 transceiver is an interface IC that converts logic-level signals into balanced differential signals for reliable communication over long, noisy, or multipoint wiring. An RS-422 transceiver serves a similar physical-layer role for balanced point-to-point links. The ADM489ANZ belongs to the transceiver, interface IC, and communications-semiconductor hierarchy, providing the physical layer between digital controllers and industrial cabling. Slew-rate limiting is a key feature of the ADM489ANZ. It reduces the rate at which driver edges transition, limiting high-frequency energy that can propagate through cables and disturb neighboring systems. This behavior makes the device suitable for industrial, instrumentation, building-control, and equipment networks where a moderate 250 kbps data rate is sufficient and controlled transitions improve interoperability. The ADM489ANZ operates from a single 4.5 V to 5.5 V supply, placing it in the 5 V interface-device class. Its one-driver, one-receiver organization supports full-duplex operation, while its differential driver and receiver interface is intended for balanced transmission lines. The operating temperature range extends from -40 °C to +85 °C, allowing use across industrial and commercial temperature conditions. Typical applications include industrial control networks, factory automation links, building automation equipment, instrumentation, and other balanced data buses. Because the interface is full duplex, transmit and receive paths can operate simultaneously. System designers must still observe the bus topology, termination, grounding, and enable-control requirements described in the manufacturer datasheet. For new layouts, place the transceiver close to the connector and route the balanced pair as a tightly coupled differential pair with a continuous ground reference. Appropriate termination and biasing depend on the cable length, topology, and network design. Check signal polarity and driver-enable timing before operation to prevent multiple transmitters from driving the bus simultaneously. This page combines the manufacturer electrical and ordering information with package details, interface-selection guidance, verified source links, and practical comparison criteria. It is intended to help engineers evaluate the ADM489ANZ for a new RS-485 or RS-422 design and to identify whether a candidate replacement truly preserves its package, pinout, operating range, and communications behavior.

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ADM489AR - 250kbps Full-Duplex RS-485/422 | Analog Devices
ADM489AR

ADM489AR - 250kbps Full-Duplex RS-485/422 | Analog Devices

The Analog Devices ADM489AR is a low-power, full-duplex, slew-rate-limited differential line transceiver rated for 250 kbps data transmission and supplied in a 14-pin SOIC package. It supports the EIA RS-485 and RS-422 standards, operates from a single 5 V supply within a 4.5 V to 5.5 V range, and provides separate transmit and receive paths for full-duplex point-to-point links. Its 12 kΩ minimum input impedance and ±12 V bus common-mode range provide practical margin in industrial multipoint networks, while 2 kV EFT protection helps withstand electrically noisy environments. An RS-485 transceiver is a physical-layer interface IC that converts logic-level signals into balanced differential bus voltages and receives differential bus voltages back into CMOS-compatible logic. This device belongs to the interface-IC hierarchy, alongside RS-422 transceivers and other differential data-interface products, and sits between a digital controller and a wired communications bus. Full duplex allows the transmitter and receiver to operate simultaneously, which is useful when a node cannot wait for bus turnaround. Key features include a 250 kbps data rate, one driver and one receiver, 5 V single-supply operation, ±12 V common-mode handling, and controlled slew rate. The slew-rate limitation reduces high-frequency harmonics and reflected-signal problems by preventing excessively fast bus transitions. The 2 kV EFT protection rating is particularly relevant in industrial environments where cables may carry electrostatic-discharge transients. The ADM489AR integrates separate differential driver outputs and receiver inputs rather than using a single shared multipoint bus segment like a half-duplex transceiver. Its architecture therefore suits point-to-point full-duplex equipment, industrial controllers, and communications links where continuous send and receive capability is required. Exact pin identities, output-disable behavior, receiver enable logic, and detailed electrical limits should be confirmed against the manufacturer datasheet before layout or firmware release. Typical uses include industrial RS-485 links, RS-422 point-to-point interconnects, factory automation equipment, remote sensor interfaces, and embedded control systems. In a 5 V design, the transceiver can bridge a microcontroller UART and a balanced cable while maintaining compatibility with established differential-bus infrastructure. Compared with half-duplex RS-485 designs, the main system benefit is simultaneous transmission and reception without shared-driver contention. A key design consideration is that low data rate alone does not eliminate the need for correct bus termination, controlled impedance, common-mode grounding, and transient protection. The differential pair should be routed as a balanced pair, with connector and cable arrangements selected to minimize external noise pickup. Supply decoupling should be placed close to the device, and unused or disabled inputs must be handled according to the datasheet to avoid floating digital nodes. This product page consolidates verified manufacturer and distributor information, sourced pricing references, engineering application guidance, and honest replacement screening. It distinguishes confirmed facts from parameters that require the datasheet, helping engineers evaluate the ADM489AR for procurement and board-level design without treating merely similar RS-485 devices as verified drop-in replacements.

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