Interface ICs
Subcategories
Products (3,400+)
ADM3072EARZ - 3.3V Half-Duplex RS-485/RS-422 Transceiver, 15kV ESD | Analog Devices
The Analog Devices ADM3072EARZ is a 3.3 V, low-power, half-duplex RS-485/RS-422 transceiver with ±15 kV ESD protection, supplied in an 8-pin SOIC_N (SO-8) package. It integrates one driver and one receiver and is designed for full- and half-duplex communication on multipoint bus transmission lines, supporting data rates up to 250 kbps per the ADM307xE family specification. A RS-485/RS-422 transceiver is a differential line interface IC that converts between a single-ended UART/logic signal on the controller side and a robust differential signal on the cable side. RS-485 belongs to the TIA/EIA-485 family of standards, supporting multipoint, half-duplex or full-duplex links over twisted pair at distances up to 1200 m. Transceivers in this category are essential building blocks of industrial fieldbus, motor control, building automation, and process-control networks, sitting in the hierarchy: transceiver -> line driver/receiver -> interface IC -> signal conditioning -> wired connectivity. Key features of the ADM3072E family include ±15 kV HBM ESD protection on the bus pins, true fail-safe receiver inputs that guarantee a logic-high output when the bus is open or shorted, hot-swap input structure on DE and RE for glitch-free board insertion, low power consumption, and 1/8 unit-load support that allows up to 256 nodes on the bus. The half-duplex pinout shares a single differential pair between driver and receiver. The device operates from a single 3.0 V to 3.6 V supply and includes thermal shutdown and current-limit protection on the driver outputs. Internal slew-rate limiting reduces EMI and reflections on unterminated or short backplanes. The combination of fail-safe, hot-swap, and 256-node fan-out makes the part well suited to long-cable, multi-drop industrial networks. Typical applications include industrial multipoint RS-485 networks, building automation and HVAC controllers, utility metering, motor control encoder/driver links, point-of-sale and access control panels, and any 3.3 V MCU/UART-to-RS-485 bridge. Pairing with a 3.3 V Cortex-M MCU (e.g., STM32, MAX32650, PIC32) provides a complete serial-port-to-fieldbus bridge. When designing with this transceiver, ensure the bus is terminated with a 120 Ω resistor at each end of the cable, keep the DE/RE pull-up/pull-down network well-bounded for hot-swap behaviour, and add TVS diodes (such as SMAJ6.8CA) for surge protection beyond the built-in ±15 kV HBM ESD rating. This page synthesizes distributor pricing, same-package drop-in alternatives (including ADM3070E, ADM3071E, ADM3073E, ADM3075E, ADM3076E and the MAX3072E cross-reference), and practical design notes not found in the manufacturer datasheet.
ADM3202AN - 3.3V Dual RS-232 Transceiver | Analog Devices
Analog Devices ADM3202AN is a dual-channel RS-232 and CCITT V.28 interface transceiver operating from a single 3.3 V supply, with a data rate up to 230 kbps according to the manufacturer product page. The device integrates two RS-232 line drivers and two receivers and uses four external 0.1 µF charge-pump capacitors to generate the bipolar voltages required by the RS-232 interface. It is supplied in a 16-pin PDIP package. An RS-232 transceiver is an interface IC that translates between single-ended logic-level signals and the bipolar, single-ended signaling used by RS-232 equipment. Within the interface hierarchy, the ADM3202AN belongs to the RS-232 transceiver family of communication interface ICs. Its 3.3 V operation is useful for portable, battery-powered, industrial, and embedded systems where a higher-voltage RS-232 supply would increase power consumption or complicate system design. Key features include operation from one 3.3 V supply, support for data rates up to 230 kbps, compliance with the EIA-232E and CCITT V.28 specifications, and four external 0.1 µF charge-pump capacitors. The Analog Devices family also offers PDIP, SOIC, SSOP, and TSSOP package options. These characteristics make the ADM3202AN suitable for industrial data links, point-of-sale equipment, instrumentation, and other systems that need bidirectional serial communication over RS-232. The internal charge-pump and voltage-doubler circuitry lets the device operate without a separate negative supply. Designers must nevertheless preserve the required capacitor connections and provide suitable bypass capacitance close to the supply pins. Because an RS-232 receiver commonly includes hysteresis and threshold behavior, signal integrity depends on correct grounding, cable routing, and protection practices at the connector rather than on high-speed digital routing techniques. The ADM3202AN is appropriate for legacy serial-console connections, test and measurement control interfaces, payment terminals, industrial control panels, and communication links between a 3.3 V embedded controller and an RS-232 peripheral. The 16-pin PDIP package is also useful for prototypes, through-hole industrial products, and designs that favor inspection or socket assembly rather than a surface-mount layout. A critical design consideration is the availability of the obsolete ADM3202AN. The exact listed unit price is $1.75 as of 2026-10-28, but lifecycle status and sourcing should be confirmed before committing a new production design. Engineers should also verify charge-pump capacitor voltage ratings, provide adequate supply decoupling, and protect externally accessible RS-232 lines against electrostatic discharge. This page consolidates the verified manufacturer specifications, distributor pricing, package information, and available drop-in references for ADM3202AN. It also highlights the lifecycle risk, practical charge-pump requirements, and the exact application conditions under which each substitute should be selected.
ADM3202ARNZ - 3.3V RS-232 2/2 Transceiver | Analog Devices (Tape & Reel)
The Analog Devices ADM3202ARNZ is a low-power, 2-driver/2-receiver RS-232 line transceiver that operates from a single +3.3 V supply, supports data rates up to 460 kbps, and uses four external 0.1 uF charge pump capacitors, housed in a 16-lead SOIC_N (3.90 mm width) package supplied on tape and reel. An RS-232 transceiver is an interface IC that converts logic-level UART signals (TTL/CMOS, typically 0 V to 3.3 V) into the wider voltage swings specified by the EIA-232E and CCITT V.28 standards, and vice versa. Within the signal chain hierarchy, it belongs to the transceiver class of drivers/receivers under Interface ICs, bridging microcontrollers, processors, or UARTs to legacy serial ports, industrial equipment, and point-of-sale hardware. Key features include single-supply 3.3 V operation with an on-chip charge pump voltage doubler/inverter, conformance to EIA-232E and V.28 specifications, high-speed operation up to 460 kbps, and small 0.1 uF external charge pump capacitors that reduce board area and bill-of-materials cost compared to older parts requiring 1 uF or larger capacitors. Technically, the ADM3202 integrates two charge pump stages (doubler and inverter) to generate approximately +/-6 V RS-232 rails from the 3.3 V supply. The drivers deliver guaranteed EIA-232E output levels, and the receivers include internal input pull-ups so that unconnected receiver inputs default to a known mark state. The ADM3202 variant has no shutdown pin; the related ADM3222 and ADM1385 add a low-power shutdown facility for battery applications. Typical applications include industrial equipment serial ports, embedded systems with RS-232 debug or console links, point-of-sale terminals, battery-powered portable instrumentation (with ADM3222 variants), and any 3.3 V microcontroller design interfacing to legacy RS-232 equipment. Design considerations: place the four 0.1 uF charge pump capacitors as close as possible to the device pins and observe datasheet polarity for the flying capacitors; ensure the supply can support the transient charge pump current during data transmission. This page synthesizes distributor pricing, drop-in alternatives, pinout, and practical design notes not found in a single manufacturer datasheet, as of 2026-09-13.
ADM3202ARNZ-REEL - 3.3V RS-232 2/2 Transceiver | Analog Devices
The Analog Devices ADM3202ARNZ-REEL is a low-power, 2-driver/2-receiver RS-232 line transceiver that operates from a single +3.3 V supply, supports data rates up to 460 kbps, and uses four external 0.1 uF charge pump capacitors, housed in a 16-lead SOIC_N (3.90 mm width) package supplied on tape and reel. An RS-232 transceiver is an interface IC that converts logic-level UART signals (TTL/CMOS, typically 0 V to 3.3 V) into the wider voltage swings specified by the EIA-232E and CCITT V.28 standards, and vice versa. Within the signal chain hierarchy, it belongs to the transceiver class of drivers/receivers under Interface ICs, bridging microcontrollers, processors, or UARTs to legacy serial ports, industrial equipment, and point-of-sale hardware. Key features include single-supply 3.3 V operation with an on-chip charge pump voltage doubler/inverter, conformance to EIA-232E and V.28 specifications, high-speed operation up to 460 kbps, and small 0.1 uF external charge pump capacitors that reduce board area and bill-of-materials cost compared to older parts requiring 1 uF or larger capacitors. Technically, the ADM3202 integrates two charge pump stages (doubler and inverter) to generate approximately +/-6 V RS-232 rails from the 3.3 V supply. The drivers deliver guaranteed EIA-232E output levels, and the receivers include internal input pull-ups so that unconnected receiver inputs default to a known mark state. The ADM3202 variant has no shutdown pin; the related ADM3222 and ADM1385 add a low-power shutdown facility for battery applications. Typical applications include industrial equipment serial ports, embedded systems with RS-232 debug or console links, point-of-sale terminals, battery-powered portable instrumentation (with ADM3222 variants), and any 3.3 V microcontroller design interfacing to legacy RS-232 equipment. Design considerations: place the four 0.1 uF charge pump capacitors as close as possible to the device pins and observe datasheet polarity for the flying capacitors; ensure the supply can support the transient charge pump current during data transmission. This page synthesizes distributor pricing, drop-in alternatives, pinout, and practical design notes not found in a single manufacturer datasheet, as of 2026-09-13.
ADM3202ARNZ-REEL7 - 3.3V RS-232 2/2 Transceiver 460kbps | ADI
The Analog Devices ADM3202ARNZ-REEL7 is a low-power, 2-driver/2-receiver RS-232/V.28 line transceiver that operates from a single +3.3 V supply, supports data rates up to 460 kbps, and uses only four external 0.1 uF charge pump capacitors, housed in a 16-pin SOIC (0.154 in / 3.90 mm width) package supplied on tape and reel. An RS-232 transceiver is an interface IC that converts logic-level UART signals (TTL/CMOS, typically 0 V to 3.3 V) to the higher voltage swings defined by the EIA-232E and ITU V.28 standards, and vice versa. Within the signal-chain hierarchy, it belongs to the interface IC family alongside RS-485, CAN and USB transceivers, and sits between a microcontroller UART and a physical D-sub serial port. Because RS-232 rails can swing to +/-5 V or more, an integrated charge pump (voltage doubler and inverter) is required when only a single low-voltage supply is available. Key features of the ADM3202 include guaranteed 460 kbps operation for high-speed serial links, operation from a 3 V to 5.5 V supply range per distributor parametric data, EIA-232E/V.28 conformance, and a small external capacitor requirement of only 4 x 0.1 uF, which reduces board area and BOM cost. The complementary ADM3222/ADM1385 family members add a low-power shutdown facility for battery-powered portable instruments. Technically, the device uses CMOS charge-pump technology with integrated driver and receiver channels. The charge doubler generates V+ and the inverter generates V- from the 3.3 V rail, enabling true RS-232 output levels without a dual supply. Receivers incorporate hysteresis and tolerate input voltages up to +/-30 V, improving noise immunity on long cables. Typical applications include industrial point-of-sale equipment, networking and communication equipment serial management ports, embedded systems console/debug ports, and battery-powered portable instruments with RS-232 connectivity. Design considerations: place the four 0.1 uF charge pump capacitors as close as possible to pins 1-6, and use at least 0.1 uF of supply decoupling on VCC; note the ADM3202 itself lacks the shutdown pin available on the ADM3222 variant. This page synthesizes distributor availability, drop-in alternatives, pinout detail and design notes beyond what a single datasheet provides.
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.
ADM3491AN - 3.3V 20Mbps RS-485 Transceiver | Analog Devices
The Analog Devices ADM3491AN is a 3.3 V, full-duplex differential line transceiver capable of 20 Mbps data rates, with 840 µA supply current and a 12-pin PDIP package. Designed for multipoint transmission lines, it supports EIA RS-485 and RS-422 communication while providing short-circuit protection, thermal shutdown, and interoperability with 5 V logic. An RS-485 transceiver is an interface integrated circuit that converts logic-level signals into balanced differential signals for reliable communication over longer cables and electrically noisy environments. The differential signaling method improves noise immunity by comparing the two conductors rather than relying on a single-ended voltage. The ADM3491AN belongs to the RS-485 transceiver category, where it combines a transmitter, receiver, and bus-driver circuitry in one low-power device for industrial and embedded data links. Low power consumption is central to the ADM3491AN design. Its 840 µA operating supply current suits battery-powered and power-sensitive instruments, while the shutdown mode reduces supply current to 2 nA. A 20 Mbps maximum data rate supports high-speed point-to-point or multipoint links, and the receiver input impedance of 19 kΩ permits up to 50 transceivers on a bus. Interoperability with 5 V logic allows the device to connect to controllers operating above its nominal 3.3 V supply level. The ADM3491 family provides a combination of low-power operation, common-mode range, and transient robustness. Analog Devices specifies operation with a 3.3 V supply across a ±0.3 V tolerance. Its electrical characteristics are specified over the full device temperature range, and the integrated thermal shutdown mechanism provides protection when the output driver is subjected to fault conditions. An 8 ns transmitter skew specification helps preserve timing relationships between complementary differential outputs. Typical uses include industrial RS-485 links, instrumentation equipment, building controls, factory automation networks, and low-power embedded communications. The device is particularly appropriate where a compact multipoint bus must operate from a 3.3 V supply and where low standby current matters. Its transmitter can also be used in full-duplex point-to-point configurations when separate differential pairs are available. The principal design consideration is that the 12-pin PDIP package occupies more board area than leadless surface-mount alternatives. Place the transceiver close to the connector and bus interface, maintain the differential pair as a tightly coupled route, and provide the termination and biasing required by the RS-485 network. Keep the logic side and cable-side return paths separated to avoid introducing ground potential differences into the differential receiver. This page combines the manufacturer's key electrical ratings with practical guidance for RS-485 bus implementation, package selection, transient protection, and power management. It also identifies the temperature-grade ADM3491AN-1 as a same-package option for design continuity when its specified operating grade matches the system requirements.
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.
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.
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.
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.
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.
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.
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.
ADM4853AR - 10Mbps RS-485/422 Transceiver | Analog Devices
The Analog Devices ADM4853AR is a 5 V, slew-rate-limited RS-485/RS-422 differential line transceiver rated for data rates up to 10 Mbps and offered in an 8-lead SOIC package. The ADM4853 family provides half-duplex and full-duplex options for balanced communication over multipoint bus transmission lines, with reduced slew rates intended to limit electromagnetic interference. An RS-485 transceiver is an interface IC that converts single-ended logic signals into balanced differential signals and receives differential bus signals back into CMOS-compatible logic. The broader hierarchy is transceiver → differential line transceiver → RS-485/RS-422 interface IC → integrated circuit. Analog Devices describes the ADM4853 family as compliant with EIA RS-485 and RS-422 standards, making it suitable for industrial equipment, instrumentation, and other balanced data links. The ADM4853 provides a 10 Mbps data-rate option, making it the highest-rate member of the ADM4850 through ADM4857 grouping shown in the manufacturer documentation. Slew-rate limiting reduces high-frequency harmonics that can couple into adjacent circuitry. The interface also features true fail-safe receiver behavior and is specified for a 1/8-load transceiver application, supporting practical RS-485 bus loading. Half-duplex operation uses shared differential bus conductors, allowing a node to transmit and receive over the same pair. The manufacturer lists the ADM4853 among devices suitable for high-speed bidirectional communication on multipoint bus transmission lines. Differential signaling improves noise immunity by receiving the difference between two conductors rather than relying on a single conductor referenced to ground. Typical uses include industrial control networks, factory automation links, instrumentation buses, industrial Ethernet gateways with RS-485 interfaces, and embedded systems that need reliable communication over cable runs. The 10 Mbps capability is useful when a bus combines substantial data volume with short physical links or demanding throughput requirements. Designers should use the manufacturer pin-description table and recommended circuit in the ADM4853 Data Sheet before assigning PCB nets. Bus termination, fail-safe biasing, isolation, grounding, and driver-enable timing depend on topology and cable length. The reduced slew rate should be considered when balancing EMI performance against the required data rate. This page consolidates the manufacturer device classification, verified package information, functional distinctions, application guidance, and drop-in comparison information. It also highlights the engineering checks needed to determine whether a same-package substitute preserves speed, supply voltage, receiver behavior, and transceiver mode.
ADM4855AR - 500 kbps RS-485/RS-422 Transceiver | Analog Devices
The Analog Devices ADM4855AR is a 5 V, slew-rate-limited differential line transceiver for RS-485 and RS-422 communication systems, supporting data rates up to 500 kbps. The device is packaged in an 8-lead SOIC and supports half-duplex operation on multipoint bus transmission lines. Its reduced slew rate limits electromagnetic interference, while true fail-safe receiver behavior improves system reliability when the bus is idle. An RS-485 transceiver is a physical-layer interface device that converts logic-level signals into balanced differential voltages and receives those differential signals back into CMOS-compatible logic. Within the interface hierarchy, the ADM4855AR is a differential line transceiver, an RS-485/RS-422 interface IC, and ultimately a communications semiconductor. Balanced signaling improves noise immunity and allows reliable data transfer over longer cable runs than a single-ended interface. Key features include a 500 kbps data-rate capability, half- and full-duplex family options, reduced slew rates for low EMI, and true fail-safe reception. The 5 V supply architecture integrates a driver, receiver, and bus-control functions in one compact package. These characteristics suit industrial control, instrumentation, building automation, and data-acquisition networks where predictable line transitions and noise immunity are important. The ADM4855 family combines a transmit driver with a differential receiver capable of monitoring bus activity. Its controlled output transitions reduce radiated emissions and ringing on terminated cables. The receiver also provides fail-safe behavior for the condition in which the bus is undriven, helping a system avoid interpreting an open or idle bus as invalid logic activity. Exact drive strength, receiver thresholds, and timing values should be confirmed against the manufacturer datasheet for the selected orderable variant. Typical uses include industrial RS-485 field buses, remote sensor nodes, programmable-logic-controller interfaces, industrial motor and process-control equipment, and building-automation controllers. The device is especially useful where cable length, ground offsets, or nearby switching equipment make single-ended signaling unreliable. Termination, biasing, and protection components must be selected from the cable length, data rate, and topology. For PCB implementation, place the transceiver close to the bus connector, route the differential pair as a tightly coupled pair, and provide a solid ground reference. Add surge protection for cables leaving an enclosure, and follow the manufacturer guidance for bus termination and fail-safe biasing. Verify that the transceiver mode configuration matches the intended half-duplex or full-duplex topology.
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.
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.
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.
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.
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.
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.
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.
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.