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LTC2863IS8-1 - ±60V Fault-Protected RS485/RS422 Transceiver | ADI
The Analog Devices LTC2863IS8-1#PBF is a ±60V fault-protected, 3V to 5.5V supply, full-duplex RS485/RS422 transceiver housed in an 8-pin SOIC (IS8) package. Per the manufacturer datasheet, it integrates one driver and one receiver (1/1), supports data rates up to 20 Mbps, and tolerates ±60V on the bus pins without damage, a level that exceeds the typical RS485 common-mode range of -7V to +12V by a wide margin. A transceiver is a semiconductor device that bridges two distinct electrical interfaces, in this case translating between low-voltage CMOS logic on the controller side and the differential, bus-terminated signaling required by the RS485/RS422 standard. RS485/RS422 transceivers sit inside the broader interface-IC hierarchy: interface IC > line driver/receiver > differential transceiver > RS485/RS422 transceiver. The LTC2863 family is positioned for harsh industrial bus networks where hot-plug events, wiring faults, and surge exposure are routine. Key features include ±60V fault protection on driver outputs and receiver inputs, ±25V HBM ESD protection on the bus pins, 1/8 unit load (up to 256 nodes per bus), current-limited drivers with thermal shutdown, and a fully balanced differential receiver threshold that minimizes duty-cycle distortion. The -1 suffix denotes the full-duplex (no shared DE/RE control timing constraint) pinout variant in the 8-lead SOIC; the -2 variant differs in enable logic. Per the manufacturer datasheet, MP-grade (-55°C to 125°C) and DFN package options are also available in the LTC2863 family. Architecturally, the device combines a differential line driver with a wide-input-range differential receiver, both protected by on-chip TVS-style clamping structures. The 3V-5.5V VCC range allows direct connection to 3.3V or 5V microcontrollers without level shifters, simplifying BOM and reducing board area. Pin compatibility with the LT1785 and LT1791 families (per Analog Devices product page) means existing designs can be ruggedized against field faults with no layout rework. Typical applications include industrial fieldbus networks (Modbus, Profibus, BACnet), building automation, motor drive feedback links, smart-grid metering, and any long-cable RS485 link exposed to installation transients or mis-wiring. The ±60V tolerance protects against accidental AC mains contact on the bus. When laying out the LTC2863IS8-1, keep the bus traces short and matched, place the bus termination at the end nodes, and provide a solid ground plane; the IC's internal fault protection does not replace good EMC practice. Use a 100nF decoupling capacitor close to VCC and add a 10µF bulk capacitor if the supply is shared with switching regulators.
LTC2870IFE - RS232/RS485 Multiprotocol Transceiver | Analog Devices
The Analog Devices LTC2870IFE is a pin-configurable multiprotocol transceiver supporting RS232, RS485, and RS422 on shared I/O lines, operating from a single 3V to 5.5V supply in a 28-pin TSSOP-EP package. The device integrates switchable termination resistors, configurable as two single-ended RS232 transceivers or one differential RS485/RS422 transceiver, with 2/2 (driver/receiver) channel count. A multiprotocol transceiver is a mixed-standard interface IC that allows a single port to communicate over multiple physical-layer protocols (RS232 point-to-point, RS485/RS422 multi-drop differential). The LTC2870 belongs to the transceiver -> line driver/receiver -> interface IC -> integrated circuit hierarchy. This protocol flexibility reduces BOM count when a system must support both legacy RS232 equipment and modern differential RS485 industrial fieldbuses without two separate transceivers. Key features include ±15 kV ESD protection on the transceiver I/O pins (HBM), integrated switchable RS485 120 ohm termination, full-duplex and half-duplex RS485 modes, slew-rate-limited RS485 driver for low EMI, and a wide common-mode range exceeding the RS485 requirement. The exposed pad (TSSOP-EP) package improves thermal dissipation for high-load industrial environments. Logic inputs are 5V tolerant when operating from 3.3V supply, simplifying level shifting with MCUs and FPGAs. Technically, the LTC2870 uses charge-pump technology for RS232 ±5V drivers while running from a single low-voltage rail, and a precision differential line driver for RS485/RS422. Internal logic configures the protocol by setting mode pins; the shared bus pins are reorganized between single-ended and differential operation without external switching. The receiver features 25 mV typical hysteresis for noise immunity on long RS485 cables. Typical applications include industrial programmable logic controllers (PLCs) with mixed RS232/RS485 ports, point-of-sale (POS) terminals, building automation gateways, multi-protocol instrumentation, and HVAC controllers. The integrated termination eliminates external resistor networks and improves field reliability. When designing with this part, place 0.1uF decoupling capacitors close to VCC pins and connect the exposed pad to a low-impedance ground plane for thermal and EMI performance. Verify mode-pin logic levels match the selected protocol during firmware development to avoid bus contention.
LTC2870IFE#PBF - RS232/RS485 Multiprotocol Transceiver | Analog Devices
Analog Devices LTC2870IFE#PBF is a robust pin-configurable multiprotocol transceiver supporting RS232, RS485, and RS422 protocols from a single 3V to 5.5V supply, housed in a 28-pin TSSOP-EP (FE) package. The LTC2870 integrates one RS485 differential transceiver and two RS232 single-ended transceivers on shared I/O lines, with automatic integrated termination resistor selection. According to the Analog Devices LTC2870/LTC2871 datasheet, the device supports data rates up to 20 Mbps for RS485 and 500 kbps for RS232, with ±25 kV ESD (HBM) protection on the bus pins. An RS232/RS485 multiprotocol transceiver is an interface IC that bridges a UART, microcontroller, or processor to a physical serial bus. The RS232 standard uses single-ended signaling (logic-high and logic-low on separate lines with ±5V to ±15V swings) and is common in point-to-point links to legacy PCs and industrial controllers. The RS485 standard uses differential signaling (A-B differential voltage) and enables multipoint half-duplex or full-duplex networks up to 1200 m with up to 32 unit loads. Multiprotocol transceivers combine both physical layers on shared pins so a single PCB footprint can serve multiple end-equipment variants, reducing BOM and qualification cost. Key features of the LTC2870 include shared I/O lines between RS232 and RS485 modes, automatic or logic-controlled 120 ohm RS485 termination, ±25 kV ESD HBM on the bus I/O pins, hot-swap glitch protection, and a low-current shutdown mode. The integrated loopback mode allows self-test of the RS232 path without external cabling. The single 3V to 5.5V supply eliminates the negative charge pump traditionally required for RS232, simplifying power tree design. Typical applications include industrial multipoint fieldbus nodes, point-of-sale terminals, RS232-to-RS485 protocol converters, and any system that must communicate to both legacy RS232 equipment and modern RS485 networks. The TSSOP-EP package provides low thermal resistance for reliable operation at the extended industrial temperature range. When designing with the LTC2870, the shared I/O pins require careful PCB routing to avoid coupling between RS232 single-ended and RS485 differential traces; the exposed pad must be soldered to a thermal copper pour for specified thermal performance.
LTC2875HS8#PBF - 60V Fault-Protected CAN Transceiver | ADI
The Analog Devices LTC2875HS8#PBF is a robust, high-speed, low-power CAN (Controller Area Network) transceiver that operates from a 3.3V or 5V supply and features ±60V overvoltage fault protection on the bus pins during all modes of operation, including power-down. The device supports data rates up to 4 Mbps (CAN FD capable) and is housed in an 8-pin SOIC (HS8) package. Per the Analog Devices LTC2875 datasheet, the part is intended for 3.3V or 5V CAN networks requiring tolerance to large common-mode transients such as load-dump events in 12V/24V automotive or industrial systems. What is a CAN transceiver? A CAN transceiver is an interface IC that sits between a CAN protocol controller (typically a microcontroller) and the physical differential two-wire CAN bus (CANH/CANL). It converts the controller's CMOS/TTL TX/RX logic into the differential dominant/recessive signaling required by ISO 11898-2/ISO 11898-5, providing ESD and overvoltage robustness, common-mode rejection, and the bus-level protection that the controller itself cannot supply. The LTC2875 belongs to the interface IC -> transceiver IC -> CAN bus transceiver category inside the broader CAN bus driver / CAN FD transceiver family. Key features include ±60V bus fault protection, ±25kV ESD (HBM) on the CANH/CANL pins, ISO 11898-2 and ISO 11898-5 conformance, low current shutdown mode, SPLIT pin for recessive stabilization, and a wide supply range of 3V to 5.5V. The driver output stage is internally slew-rate limited and guarantees VSYM (driver symmetry) so the part can be used in CAN FD frames up to 4 Mbps. The LTC2875 combines an NPN/PNP bipolar bus driver with a precision differential receiver and a charge-pump-assisted protection rail that clamps bus voltages above and below the supply rails. The integrated ±60V fault path is active even in shutdown and power-off states, an important differentiator versus conventional CAN transceivers that lose protection when VCC collapses. Typical applications include automotive body and chassis ECUs, industrial CAN nodes with long cabling exposed to 24V/48V supply transients, building automation and HVAC CAN networks, and any 3.3V or 5V MCU-based system that must survive miswiring or load-dump events on the bus. When designing with this part, place 100nF supply decoupling as close as possible to VCC and add TVS diodes (or use the part's integrated ±60V clamp) to guarantee fault survival. The SPLIT pin typically requires a 10kΩ/1nF RC network to ground for proper recessive-bias stabilization per the datasheet typical application circuit. This page synthesizes distributor pricing, drop-in 8-SO alternatives, and practical fault-protection design notes that are not collected in any single manufacturer datasheet, helping engineers select, source, and lay out the LTC2875HS8#PBF with confidence.
M88RT61632 - 16-lane PCIe 6.x/CXL 3.x Retimer, 64 GT/s PAM4 | Montage Technology
The Montage Technology M88RT61632 is a high-performance 16-lane PCIe 6.x and CXL 3.x Retimer that complies with the PCIe 6.x and CXL 3.x specifications. It delivers data rates up to 64 GT/s per lane using Montage's proprietary PAM4 SerDes IP, achieving a link budget above 40 dB while maintaining low latency. The device is sampling as of January 2025 and is offered in a mainstream BGA package suitable for high-bandwidth AI and cloud-computing platforms. A retimer is a signal-conditioning device placed in the middle of a high-speed serial link to re-clock and equalize degraded signals, restoring signal integrity across long PCB traces, cables, or connector paths. The M88RT61632 sits in the PCI Express / Compute Express Link physical layer stack — PCIe 6.x uses PAM4 modulation at 64 GT/s, doubling the bandwidth of PCIe 5.0 NRZ 32 GT/s. Retimers are increasingly required in AI server fabrics where GPU-to-GPU and GPU-to-CXL-memory links traverse long channels inside the chassis. Key features include 16 lanes of PCIe 6.x/CXL 3.x with per-lane PAM4 64 GT/s operation, link budget above 40 dB, low-latency retransmission, and compatibility with mainstream industry packaging. Montage's proprietary SerDes IP supports the FLIT-mode framing and FEC structures defined in the PCIe 6.x specification, ensuring full compliance with the PCI-SIG and CXL-3.x standards. Architecturally, the chip integrates analog front-ends with CTLE, DFE, and adaptation engines, plus protocol-aware PCS layers for PCIe and CXL. The 40+ dB link budget enables signal recovery across long channels, connectors, and backplane routes typically encountered in AI accelerator trays, GPU risers, and CXL memory expansion boards. Typical applications include AI training and inference servers, CXL memory pooling and expansion, GPU-to-GPU and GPU-to-NVMe interconnects, PCIe switch fabrics, and cloud-computing accelerator sleds. It pairs naturally with leading-edge host processors and switching SoCs that expose PCIe 6.x or CXL 3.x ports. When designing with the M88RT61632, follow Montage's reference layout guidelines for the SerDes ball map and power-rail decoupling. Provide low-impedance supply rails and isolated analog/digital grounds to maintain the 64 GT/s link budget. Confirm firmware is loaded via the host BMC or system management interface during bring-up. This page synthesizes manufacturer specifications, distributor availability, and PCB design considerations for engineers evaluating the M88RT61632 in next-generation AI server and CXL memory platforms — information not consolidated in the manufacturer brief alone.
MALD-37445 - Quad 25G/26G CDR VCSEL Driver | MACOM
MACOM MALD-37445 is a quad-channel 24.33 Gbps or 25.78 Gbps VCSEL driver with integrated clock-and-data recovery and input equalization, supplied as a 3 mm × 2 mm die. Its four transmit channels consolidate input equalization, CDR retiming, and laser-drive functions into one optical-transmit solution. Outputs are spaced at 250 µm centers to align with standard optical interfaces. The reference-free CDR supports 24.33 Gbps and 25.78 Gbps operation and can be bypassed for legacy or non-standard data rates. A clock-and-data recovery IC is a high-speed signal-conditioning device that extracts timing information from a serial data stream and reconstructs a clean data output. A VCSEL driver is a semiconductor interface that converts high-speed electrical data into modulation current for a vertical-cavity surface-emitting laser. Together, these functions form part of the optical communication hierarchy: optical transceiver → transmit signal chain → clock and data recovery → VCSEL driver → semiconductor. The primary verified features of MALD-37445 are four integrated CDR/VCSEL-driver channels, two supported retiming rates of 24.33 Gbps and 25.78 Gbps, an input equalizer, reference-free CDR operation, CDR bypass capability, and 250 µm output spacing. This combination is intended to reduce transmit-path component count while supporting both standardized and legacy interfaces. The equalizer addresses channel-loss impairments before data reaches the CDR, while retiming improves signal integrity by removing accumulated timing variation. Architecturally, the device is optimized as a complete one-chip transmit solution for optical modules. Each channel combines receive-side input conditioning with transmit-side laser drive, allowing an optical subsystem to process incoming high-speed data for re-timing and forwarding. The selectable CDR-bypass path is important when interoperability depends on legacy or non-standard data rates that the internal retiming loop should not process. Typical uses include 25G and 26G optical-module transmit sections, quad-lane optical links, high-speed backplane or data-communication equipment, and systems requiring coordinated equalization, retiming, and VCSEL-drive functions. The output pitch directly supports compact optical-interface assembly, although the die format requires assembly-level design rather than conventional leaded or packaged-component replacement. Designers must treat MALD-37445 as a bare-die RF and mixed-signal component. Its 3 mm × 2 mm form does not establish a pin-compatible drop-in footprint by itself. Board assembly must follow MACOM's die pad definitions, assembly process, thermal path, and high-speed layout guidance. Differential routing, impedance control, return paths, and laser-drive current settings must be validated in the complete channel rather than inferred only from aggregate data rate. This page consolidates the verified manufacturer information, source links, packaging facts, application context, and engineering cautions. It distinguishes a complete optical transmit IC from merely similar high-speed drivers and avoids inventing electrical limits, prices, pin assignments, or replacement parts that the supplied evidence does not establish.
MAP1602 - Gen4 x4 4-Channel NVMe Controller | Maxio
The Maxio MAP1602 is a DRAMless NVMe solid-state-drive controller with a PCI Express Gen4 x4 host interface and a four-channel NAND interface supporting up to four CE devices per channel. The supplied product information identifies Smart Cache architecture, multi-core Fusion technology, and hardware/firmware co-design as methods used to improve resource utilization, read/write performance, and power efficiency. It is intended for designers developing PCIe Gen4 M.2 solid-state drives rather than for a conventional discrete analog or logic circuit. An SSD controller is a semiconductor system that coordinates a host interface, NAND media, firmware, cache management, error handling, and data-transfer paths. In the storage hierarchy, the MAP1602 is a storage controller, then an NVMe controller, then a PCIe interface controller, and finally a semiconductor used in solid-state storage. Its DRAMless architecture means external DRAM support is not identified in the supplied MAP1602 description; firmware and on-controller resources therefore carry greater responsibility for mapping and cache behavior. The verified interface data supports PCIe Gen4 x4 connectivity and four NAND channels, each supporting up to four CE devices per channel. The related controller PDF also associates MAP1202-I and MAP1602-I families with DRAMless PCIe/NVMe designs, but the supplied snippets do not establish the exact package, pinout, operating voltage, NAND timing, ECC capability, endurance, power figures, or lifecycle status for MAP1602. Those parameters must be confirmed against the original manufacturer documentation before schematic release or production sourcing. Typical design targets include M.2 NVMe SSDs, client notebooks, compact desktops, and other systems with a PCIe Gen4 x4 storage slot. The referenced SSD listing reports densities of 1TB and 2TB, sequential reads up to 7000MB/s, writes up to 6000MB/s, and a 3.3V ±5% supply condition for a module built around this controller; these are module-level claims, not guaranteed MAP1602 IC ratings. PCB design should preserve the high-speed PCIe and NAND signal-integrity requirements, provide correct power sequencing, and follow the manufacturer’s reference layout and firmware requirements. Because the available evidence does not provide a complete pinout or electrical table, engineers should not infer package details from unrelated MAP1602 listings. The public datasheet URL supplied here is a retrieved PDF reference, while its manufacturer and revision metadata remain to be confirmed. This page consolidates the verified interface capabilities, module-level SSD claims, architecture descriptions, and engineering limitations for MAP1602. It also distinguishes useful design context from unverified controller-level specifications so procurement and hardware teams can request the correct manufacturer package data before committing a design.
MAX13085EESA+ - 500kbps Fail-Safe RS-485/RS-422 | Analog Devices
The Analog Devices MAX13085EESA+ is a 5.0 V RS-485/RS-422 transceiver with one driver, one receiver, 500 kbps data rate, and ±15 kV ESD protection in an 8-pin SOIC package. It supports half-duplex communications and includes fail-safe receiver circuitry plus hot-swap capability. The verified material also reports a 1/8-unit-load receiver input impedance and up to 256 transceivers on the bus. Its low 1.2 mA unloaded or driver-disabled supply current suits power-conscious field-bus equipment. An RS-485/RS-422 transceiver is an interface IC that converts logic-level UART or controller signals into balanced differential bus signals, then converts received differential signals back into CMOS-compatible logic. RS-485 supports multipoint, half-duplex buses, while RS-422 commonly emphasizes point-to-point or driver-receiver links. The MAX13085E family belongs to the transceiver hierarchy: interface transceiver, wired communication interface, and semiconductor. The MAX13085E provides one driver and one receiver, 500 kbps operation, ±15 kV ESD protection, and fail-safe behavior that forces a logic-high receiver output when inputs are open, shorted, or all bus transmitters are disabled. Its hot-swap capability helps maintain predictable operation during connector mating. The 1/8-unit receiver loading lowers input impedance so as many as 256 compatible transceivers can share one bus. Its half-duplex architecture requires control of driver enable and receiver enable according to the selected bus topology. Supply filtering, protected cable routing, and correct termination are essential because a compliant transceiver alone does not guarantee an immune field connection. The stated 5 V operating range also requires systems to regulate the device from compatible rail voltages. Typical uses include industrial sensor buses, building automation, factory equipment, telecom racks, and remote monitoring links. It is particularly useful when a compact bus node needs one bidirectional half-duplex channel, robust electrostatic protection, and deterministic behavior during disabled-driver or hot-plug conditions. Designers should confirm the manufacturer pinout and enable polarity before routing the PCB, and should not infer RS-485 network performance from the 500 kbps device rate alone. Cabling, topology, termination, grounding, and transceiver matching determine practical range and reliability. This page combines verified manufacturer data, distributor availability information, and application-oriented engineering guidance. It also separates documented drop-in alternatives from unverified substitutions, helping engineers compare procurement and design options without treating merely similar interface ICs as pin-compatible replacements.
MAX13487EESA+ 500kbps RS-485/RS-422 Transceiver
The Analog Devices MAX13487EESA+ is a 5 V, half-duplex, 500 kbps RS-485/RS-422-compatible interface IC with one driver, one receiver, automatic direction control, and ±15 kV ESD protection in an 8-SOIC package. Designed for industrial data links, it combines differential bus communication with automatic transmitter-receiver switching, reducing the need for a separate isolated direction-control channel. An RS-485/RS-422 transceiver is an interface IC that converts between single-ended logic signals used by a controller or MCU and differential signals carried across a noisy, long-distance bus. It belongs to the communications-interface hierarchy: interface IC → differential transceiver → RS-485/RS-422 interface. One transceiver supports bidirectional half-duplex communication, so the same pair of bus conductors carries traffic in either direction, but only one side transmits at a time. The MAX13487EESA+ provides 500 kbps operation, a +5 V supply, automatic direction control, hot-swap capability, and ±15 kV ESD protection according to the manufacturer datasheet. AutoDirection control is particularly useful when the system has no convenient GPIO for asserting driver enable. Hot-swap capability helps prevent false bus transitions during startup and live insertion, while ESD protection improves robustness against electrostatic discharge encountered in industrial environments. The MAX13487EESA+ is suited to RS-485-compatible multidrop networks, RS-422-compatible point-to-point links, industrial control systems, instrumentation, building automation, and communications equipment where a compact 500 kbps half-duplex transceiver is required. The device is available in an 8-SOIC package, making it appropriate for conventional PCB assembly and replacement workflows. When designing around the MAX13487EESA+, verify the complete datasheet pinout, termination requirements, bus topology, grounding, and supply decoupling before production release. The automatic direction-control architecture should be reviewed for compatibility with the system’s bus timing and fault-recovery expectations. This page combines verified manufacturer and distributor information with package, application, and replacement-oriented engineering guidance.
MAX14131FAEE+ - 4-Ch 1kVrms 150Mbps Digital Isolator | Maxim Integrated
The Analog Devices / Maxim Integrated MAX14131FAEE+ is a 4-channel digital isolator rated for 1 kVrms isolation and 150 Mbps data rate, housed in a 16-pin SSOP (3.90 mm) package. It uses Maxim's proprietary capacitive isolation technology to deliver 25 kV/µs typical common-mode transient immunity (CMTI) while operating from 1.71 V to 5.5 V on both sides of the isolation barrier. A digital isolator is an IC that transmits digital signals across an isolation barrier (galvanic isolation) using capacitive, inductive, or optical coupling, while blocking DC and high-voltage transients. Digital isolators sit within the signal-chain hierarchy alongside op-amps, level translators, and isol gate drivers, and are commonly used in place of optocouplers where higher speed, lower propagation delay, and tighter channel-to-channel matching are required. The MAX14131 belongs to the broader category of ICs > Interface ICs > Digital Isolators. Key features include four unidirectional channels in a 3/1 (3 forward + 1 reverse) configuration, default-low output state, 8 ns typical propagation delay, and 1000 Vrms withstand voltage for 60 seconds per UL 1577. The wide 1.71 V to 5.5 V supply range on both VDDA and VDDB allows direct interfacing with 1.8 V, 3.3 V, and 5 V logic without level shifters, simplifying multi-rail designs. Internally, the MAX14131 uses Maxim's proprietary silicon-based capacitive coupling, which avoids the LED aging and current-transfer-ratio degradation inherent to optocouplers. Each channel is implemented as a differential capacitive link with on-chip encoding/decoding, achieving 150 Mbps NRZ signaling with low pulse-width distortion. Typical applications include isolated SPI / UART / I2C data links, industrial field-bus isolation (RS-485, CAN, Profibus), isolated gate-drive signaling, medical patient-isolation interfaces, and battery-management systems that require galvanic separation between high-voltage stacks and low-voltage MCUs. When designing with the MAX14131, place 0.1 µF bypass capacitors on each VDD pin within 2 mm of the package, and keep the channel trace lengths matched. The device dissipates negligible power across the barrier, but the SSOP theta_JA of around 110 °C/W should be respected at extreme ambient temperatures. This page synthesizes distributor pricing, drop-in cross-reference alternatives, and practical design notes not found in the standalone manufacturer datasheet, providing engineers with a single source for parametric comparison and PCB-level replacement decisions.
MAX14431CAEE+ - 4-Channel 200Mbps Digital Isolator | ADI
Analog Devices MAX14431CAEE+ is a four-channel, low-power digital galvanic isolator rated for 3000 Vrms isolation, data rates up to 200 Mbps, and typical common-mode transient immunity of 50 kV/us. It is packaged in a narrow 16-SSOP measuring approximately 0.154 inch, or 3.90 mm, in body width. The device accepts 1.71 V to 5.5 V supplies and is designed to transfer digital signals across circuits operating in different power domains while limiting conduction through the isolation barrier. According to the manufacturer datasheet, the MAX14431 family can operate with as little as 0.58 mW per channel at 1 Mbps when powered from 1.8 V. A digital isolator is a signal-conditioning semiconductor that provides electrical separation between two circuits while allowing data to pass between them. Digital isolators belong to the interface IC and power-management-adjacent categories of semiconductor components. Unlike ordinary buffers or drivers, a galvanic isolator prevents ground potential differences, switching transients, and high-voltage events from being directly conveyed through the signal path. This makes digital isolators especially useful in industrial automation, communications, medical equipment, and other systems where functional isolation protects both equipment and users. The MAX14431CAEE+ supports four isolated channels, configurable channel direction, and high-speed operation up to 200 Mbps. Verified distributor listings identify SPI digital isolation, 3000 Vrms withstand voltage, and typical CMTI of 50 kV/us as headline features. The narrow SSOP-16 package supports compact layouts, while the specified -40 C to +125 C operating range permits deployment across industrial temperature environments. Its low-power operation is useful when isolation must be maintained without allowing the isolator itself to dominate system energy use. The MAX14431 family is based on proprietary process technology intended to combine low power, fast data transfer, and reinforced isolation behavior. Exact propagation-delay, pulse-width-distortion, channel-direction, and timing values must be confirmed from the applicable manufacturer datasheet before final timing-budget design. The narrow package also makes isolation-capacitor placement, creepage, clearance, and PCB contamination control important engineering concerns; isolation is not achieved simply by inserting the IC into the signal path. Typical applications include isolated SPI links, industrial control and instrumentation, isolated data acquisition, power-conversion feedback, medical monitoring interfaces, and communication equipment. For these applications, the four-channel structure can reduce the number of discrete isolation components required. The combination of low supply voltage, fast digital transfer, and narrow package dimensions is valuable when the board area and standby power budget are constrained. Designers should verify the complete pinout, input and output supply arrangement, channel-direction configuration, isolation capacitance, timing limits, and recommended PCB layout against the MAX14430-MAX14432 manufacturer datasheet. Decoupling capacitors should be placed near the relevant supply pins, and the isolation barrier should not be bridged by copper, solder mask contamination, or high-current return paths. This page combines verified distributor data, manufacturer documentation, practical design guidance, and sourcing information to support engineering selection.
MAX1480BCPI+ - Isolated RS-485/RS-422 Transceiver, 28-PDIP | Analog Devices
The Analog Devices (formerly Maxim Integrated) MAX1480BCPI+ is a complete, electrically isolated RS-485/RS-422 data-communications interface IC housed in a 28-pin PDIP wide-body package. It integrates a half-duplex 1/1 transceiver with on-chip transformer-based galvanic isolation, allowing a single +5V supply on the logic side to power both sides of the interface while eliminating the need for an external DC/DC isolation supply. An RS-485/RS-422 transceiver is a differential line driver/receiver IC that converts a single-ended TTL/CMOS UART signal into a balanced differential signal transmitted over a twisted pair, providing high noise immunity and multi-drop capability over distances up to 1200 meters. The MAX1480BCPI+ belongs to the interface IC product hierarchy (interface IC > transceiver > RS-485/RS-422 transceiver > isolated transceiver) within Analog Devices' communication interface portfolio. Key features include 250 kbps maximum data rate with reduced-slew-rate drivers that minimize EMI and reflections on unterminated or improperly terminated buses, 70 mV receiver hysteresis for noise rejection on slow edges, and 1/1 driver/receiver count configured for half-duplex operation. The device operates from a single 5V supply, supports up to 32 transceivers on the bus, and meets all RS-485/RS-422 electrical specifications through its isolated outputs. The MAX1480BCPI+ uses a hybrid microcircuit construction combining CMOS logic with pulse transformers to deliver 1000 Vrms (per datasheet) of galvanic isolation between the logic and bus sides, eliminating ground loops and protecting sensitive logic from bus-side faults. This integrated approach removes the need for designers to qualify discrete optocouplers and isolated DC/DC converters, reducing BOM count and PCB area. Typical applications include industrial fieldbus networks (Modbus, PROFIBUS), isolated point-to-point data links between PLCs and motor drives, building automation HVAC controllers, and any system requiring robust, isolated RS-485 communication across a high-voltage barrier. The wide-body 28-PDIP footprint is designed for through-hole assembly in industrial environments. When designing with this part, observe proper PCB layout for isolation barrier creepage and clearance, and note that the bus-side supply is internally derived - only the logic-side +5V needs to be provided externally. The MAX1480BCPI+ is the slower, lower-EMI variant compared to the MAX1480A; choose the MAX1480C variant for higher data rates when EMI is managed externally. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
MAX1480BEPI+ - 250kbps Isolated RS-485/RS-422 | Maxim
The Maxim Integrated MAX1480BEPI+ is a complete electrically isolated RS-485/RS-422 transceiver with one driver and one receiver, a 250 kb/s data rate, and a 28-pin PDIP package. It is designed for half-duplex industrial data links where galvanic isolation and controlled-edge driver performance are required. The MAX1480B reduced-slew-rate driver is intended to minimize EMI and reduce reflections on longer or noisier bus interconnects. An isolated RS-485/RS-422 transceiver is an interface IC that combines differential bus-driver and receiver functions with an isolation barrier between the logic side and cable side. This class of transceiver belongs to the broader hierarchy of RS-485 transceivers, wired interface ICs, communication interfaces, and semiconductors. The MAX1480 family provides a practical way to connect a digital controller to a long, potentially noisy industrial bus without allowing ground currents or fault energy to cross the isolation boundary. Verified product information identifies the MAX1480BEPI+ as a 1/1 half-duplex RS-422/RS-485 transceiver in a 28-pin PDIP package. The manufacturer describes the isolated outputs as meeting RS-485 and RS-422 specifications. Search results also identify the MAX1480B reduced-slew-rate driver, a 250 kb/s data rate, and a 70 mV receiver hysteresis. The hybrid-microcircuit implementation provides integrated isolation rather than requiring separate optocouplers and isolated transceiver packages on the PCB. Typical uses include automated test equipment, HVAC and building-control networks, industrial-control links, local-area networks, and isolated RS-485/RS-422 data interfaces. The 250 kb/s rate makes the device suitable for low- and moderate-speed supervisory or control communications rather than high-rate storage networking. Half-duplex operation means that transmit and receive directions share the same differential pair, so the bus driver must be disabled while receiving. The principal design consideration is bus implementation. Differential pair routing should use a controlled-impedance, symmetrical layout where practical, with grounding and shielding selected according to the cable environment and installation requirements. Isolation is valuable, but it does not replace correct termination, common-mode protection, or surge suppression. The MAX1480BEPI+ should be selected only when its exact electrical ratings, isolation behavior, and pinout are verified against the manufacturer datasheet for the final design. This product page combines the verified manufacturer description, distributor listings, package identity, application context, and available comparison data for MAX1480 family variants. It also distinguishes exact family options from options whose electrical differences require engineering review before substitution.
MAX14821ETG+ - IO-Link Device Transceiver, 24-TQFN | Analog Devices
The Analog Devices MAX14821ETG+ is an IO-Link device transceiver in a 24-pin TQFN (4x4 mm) package designed for industrial sensor and actuator networks operating on the 24V IO-Link standard. It supports all IO-Link data rates (COM1/COM2/COM3 at 4.8/38.4/230.4 kbps), operates from a 9V to 36V supply range, and integrates C/Q and DO drivers that are independently configurable for push-pull, high-side (PNP), or low-side (NPN) operation. The device detects the IO-Link C/Q wake-up condition and generates a wake-up signal on the active-low WU output for microcontroller power management. Two internal linear regulators (3.3V and 5V) generate common sensor and microcontroller supply rails from the 24V bus, reducing BOM count in industrial sensor heads. An IO-Link device transceiver is a physical-layer interface IC that bridges a microcontroller (running the data-link layer protocol) to the 24V IO-Link master port on the fieldbus. In the broader taxonomy, it belongs to sensor interface ICs, then industrial interface ICs, then interface ICs, and ultimately the integrated circuits family. IO-Link (IEC 61131-9) is a point-to-point, bidirectional digital communication standard that replaces traditional 4-20 mA and binary 24V signaling with a single standardized cable carrying both power and process data, enabling predictive maintenance and rich diagnostic data on factory floors. Key features of the MAX14821ETG+ include 1/1 transceiver topology, integrated surge protection for industrial 24V lines, selectable C/Q and DI current loads for actuator use, and a wide -40C to +85C industrial operating temperature range. The C/Q driver is rated for the high-current switching demanded by industrial actuators, while the DI (digital input) and DO (digital output) channels support legacy 24V binary sensor and actuator signaling. The integrated 5V/3.3V LDO outputs eliminate the need for external regulators in most sensor head designs, while the WU output pin enables ultra-low-power sleep modes for IO-Link-compliant wake-up sequences. From an architectural standpoint, the MAX14821ETG+ integrates the 24V physical layer, two LDO regulators, surge/transient protection, and configurable driver stages into a single die. This level of integration allows a complete IO-Link device node to be built with the MAX14821ETG+, a microcontroller, and minimal external passives. The device is designed to meet IEC 61131-9 IO-Link specifications and the IEC 61000-4-2 ESD and surge immunity requirements typical of industrial 24V environments. Typical applications include IO-Link smart sensors (photoelectric, inductive, capacitive, pressure), IO-Link valve manifolds and binary actuators, industrial 24V binary sensors with wake-up capability, and factory automation I/O modules. It is also well-suited for distributed I/O blocks, proximity switches, and condition-monitoring sensor heads where the 24V bus doubles as both power supply and communication line. When designing with this transceiver, ensure that the C/Q and DO driver configurations match the connected load (sink vs source) before commissioning, and place the bulk 24V decoupling capacitor close to the VSUP pin to ride through industrial surge events. Designers should also account for the thermal dissipation of the integrated LDOs when sourcing 100 mA continuously to the microcontroller rail. This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes that go beyond what is reproduced in the manufacturer datasheet, helping engineers accelerate their IO-Link device development and source decisions.
MAX14850ASE+ - 6-Channel 600Vrms Digital Isolator | Analog Devices
The Analog Devices (formerly Maxim Integrated) MAX14850ASE+ is a six-channel digital isolator in a 16-pin SOIC (NSOIC) package that delivers up to 50 Mbps signaling and 600 Vrms isolation voltage across a monolithic silicon-dioxide barrier. It supports 3 V to 5.5 V power domains on both sides of the isolation barrier, a 1.5 kV/us minimum common-mode transient immunity (CMTI), and 30 ns typical propagation delay. A digital isolator is a semiconductor device that transfers logic signals across an isolation barrier using capacitive or magnetic coupling rather than opto-coupling or transformer coupling. Isolators sit in the system hierarchy between level shifters (which do not provide galvanic isolation) and reinforced safety isolators (which add redundant barriers for medical and high-voltage applications). The MAX14850 family uses Maxim's proprietary monolithic process technology to integrate the isolation barrier and transceivers onto a single die, reducing BOM cost versus traditional optocoupler or discrete transformer solutions. Key features include 600 Vrms working voltage rating, 2.5 kVrms surge capability per IEC 61000-4-5 referenced in the manufacturer datasheet, six independent unidirectional channels configured as 3 forward / 3 reverse, low power consumption of 2.5 mA per channel at 1 Mbps, 25 kV/us typical CMTI, and a wide operating temperature range of -40 C to +105 C. The device requires no external components other than standard bypass capacitors on each supply pin. The MAX14850 architecture combines on-chip transformers or capacitive couplers with Manchester-style or pulse-encoded data transmission to achieve robust common-mode rejection. Its monolithic integration eliminates the LED aging and CTR degradation that affect optocouplers, yielding stable performance over temperature and end-product lifetime. Typical applications include isolated RS-485/RS-232 transceivers, industrial fieldbus (Modbus, Profibus), isolated SPI and GPIO interfaces for microcontroller I/O expansion, medical patient-monitoring equipment requiring 1 x MOPP, solar inverter gate-drive signal isolation, and battery management systems in electric vehicles. When designing with this part, ensure each VDD pin is bypassed with a 0.1 uF ceramic capacitor placed within 2 mm of the IC body, and route high-speed signal traces on the inner PCB layers using a controlled-impedance stack-up to maintain signal integrity across the isolation barrier. Confirm that the board-level creepage and clearance distances for the 600 Vrms rating meet the application's pollution-degree and altitude derating requirements per IEC 60664-1.
MAX14851AEE+ - 6-Ch 600Vrms Digital Isolator, 2Mbps/50Mbps | Analog Devices
The Analog Devices (formerly Maxim Integrated) MAX14851AEE+ is a six-channel digital isolator delivering 600Vrms isolation with 2Mbps default data rate and a 50Mbps high-speed option in a 16-pin SSOP (QSOP) package. It features monolithic Maxim process technology providing compact, low-cost isolation between circuits operating from independent 3V to 5.5V supplies on each side of the barrier. The device provides a minimum common-mode transient immunity (CMTI) of 3.2 kV/us and is the industry first monolithic 600Vrms digital isolator. A digital isolator is an integrated circuit that transfers logic signals between two voltage domains while maintaining galvanic isolation - a safety barrier that blocks DC and low-frequency AC while allowing high-frequency digital edges to pass. Isolators belong to the signal isolation family, which sits between interface ICs and power management in the broader semiconductor hierarchy. They are essential for breaking ground loops, protecting low-voltage logic from high-voltage transients, and meeting safety standards such as IEC 60747-17 / UL 1577 for reinforced insulation. Key features of the MAX14851AEE+ include six unidirectional channels configurable as forward/reverse combinations, 11.8 ns typical propagation delay, 3V to 5.5V independent supply on each side (suitable as a level translator), 600Vrms working voltage per UL 1577, and an extended -40C to +125C operating temperature range. Independent supply ranges also make the device suitable as a logic-level translator between 3.3V and 5V systems without external circuitry. The MAX14851 uses Maxim's proprietary monolithic isolation process, embedding the isolation barrier on the same silicon die rather than relying on transformer or optical coupling. This monolithic approach achieves lower power consumption and higher channel density than multi-chip alternatives while eliminating the discrete transformer or optocoupler BOM. Typical applications include isolating SPI buses between an MCU and a sensor front-end, isolating I2C and RS-232/RS-485/RS-422 transceivers in industrial fieldbus nodes, general-purpose GPIO isolation in PLC and motor-drive digital interfaces, and level translation between mixed-voltage MCUs and 5V peripherals. Six channels are well matched to 4-wire SPI plus chip-select and one extra GPIO for fault or reset signaling. When designing with the MAX14851AEE+, route the four inner ground pins (GND1/GND2) carefully to maintain barrier creepage and clearance. Place 0.1 uF + 10 uF decoupling on both VDDA and VDDB as close to the IC as possible. Avoid running high-speed traces under the device to preserve creepage on the SSOP body. This page synthesizes distributor pricing, drop-in alternatives, and design notes that are not consolidated in the manufacturer datasheet, including a side-by-side comparison with same-package isolators.
MAX14852GWE+ - 2.75kV Isolated RS-485/RS-422 Transceiver | Maxim Integrated
The Maxim Integrated (now Analog Devices) MAX14852GWE+ is a 2.75kVRMS isolated, full-duplex RS-485/RS-422 transceiver housed in a 16-pin wide-body SOIC (WSOIC) package. It supports data rates of 500 kbps (low-speed mode) and 25 Mbps (high-speed mode), operates from a 1.71V to 5.5V supply on both the UART and cable-side domains, and provides 35 kV ESD protection (HBM) on the bus pins per the Maxim datasheet. An isolated RS-485 transceiver is a bus interface IC that combines a standard differential line transceiver with on-chip galvanic isolation. Isolation breaks ground loops, eliminates common-mode voltage damage, and rejects large ground-potential differences between system nodes. Within a typical industrial system, the MAX14852 sits between a microcontroller UART and the RS-485 bus, sitting in the signal-chain layer between the controller SoC and the field wiring. Key features of the MAX14852GWE+ include integrated transformer-driver isolation (no external transformers or optocouplers required), 1 driver / 1 receiver full-duplex configuration, true fail-safe receiver inputs, hot-swap capability on the bus side, and a low supply current that suits battery-backed or always-on industrial nodes. The wide-body SOIC package provides the minimum 8 mm of creepage/clearance required for 2.75 kVRMS reinforced isolation per IEC 60950 / IEC 62368. Technically, the MAX14852 uses Maxim's proprietary iso-loop isolation technology to embed an isolation barrier and DC-DC drive directly inside the IC, eliminating the need for an external isolated power supply on the cable side. The 2.75 kVRMS rating is verified for 60 seconds and the part is rated for -40 °C to +105 °C operation, suitable for outdoor cabinet and industrial-control environments. Typical applications include isolated Modbus RTU links in PLCs, RS-485 repeaters/bridges, solar inverter monitoring, building automation gateways, and any industrial node requiring robust ground isolation. Compared with optocoupler-plus-isolated-DC/DC discrete implementations, the MAX14852 reduces BOM count, PCB area, and design time. When designing with this device, allocate the WSOIC-16 footprint on the PCB with adequate clearance under the package to preserve the 2.75 kV rating, and bypass both VDD pins with 0.1 µF + 10 µF capacitors placed within a few millimeters of the pins. Note that the MAX14852GWE+ and MAX14854GWE+ differ in data-rate grade (500 kbps/25 Mbps vs 25 Mbps fixed). This page synthesizes drop-in alternatives in the WSOIC-16 package, distributor pricing tiers, and practical PCB layout/design notes that go beyond what is shown on Maxim/Analog Devices product pages.
MAX14854GWE+ - 25Mbps Isolated RS-485/RS-422 | Analog Devices
The Analog Devices MAX14854GWE+ is a 25Mbps isolated full-duplex RS-485/RS-422 transceiver with 2.75kV RMS galvanic isolation, 35kV ESD protection, and a 16-pin wide SOIC package. It supports a 1.71V to 5.5V supply range and integrates one driver and one receiver for robust point-to-point or multipoint serial links. The isolation barrier separates the cable-side driver and receiver from the UART-side circuitry. An isolated RS-485/RS-422 transceiver is an interface IC that translates logic-level signals into differential cable signals while providing galvanic isolation between equipment domains. Galvanic isolation breaks ground loops, reduces common-mode noise, and protects low-voltage UART electronics from cable-side transients. This makes the MAX14854GWE+ suitable for industrial communication, test equipment, building controls, and systems where the host and cable grounds may be at different potentials. The device supports operation from 1.71V to 5.5V, data rates up to 25Mbps in the high-speed mode, and lower-rate operation down to 500kbps according to the manufacturer product description. Its full-duplex architecture supports separate transmit and receive paths, while the integrated isolation barrier provides 2750V RMS for 60 seconds. The cable interface includes ±35kV ESD protection, a significant advantage in connector environments where electrostatic discharge is a recurring threat. The MAX14854 family is designed for robust differential serial communication where isolated voltage levels and high data throughput are both important. The MAX14854GWE+ combines an integrated isolation barrier with RS-485/RS-422 driver and receiver functions, reducing the number of external isolation components required. Its wide-body SOIC package is intended for surface-mount industrial equipment and is compatible with automated assembly. Typical applications include industrial RS-485 links, isolated UART bridges, factory equipment interfaces, building automation, instrumentation, and communications between controllers and remote sensors. The full-duplex configuration is especially useful when simultaneous transmit and receive operation is required, while the isolation rating supports dependable communication across equipment boundaries. Designers should verify supply voltage, baud-rate mode, termination, fail-safe biasing, isolation requirements, and cable-side protection before layout. Place the isolation-related components and differential traces according to the manufacturer datasheet, and keep the logic-side and cable-side ground domains physically separated. The MAX14854GWE+ is an active, leaded surface-mount device identified by the GWE+ ordering suffix.
MAX14882AWE - 5kVRMS Isolated CAN Transceiver, 1Mbps, 16-SOIC
The Analog Devices (formerly Maxim Integrated) MAX14882AWE is a 5kVRMS galvanically-isolated high-speed CAN transceiver housed in a 16-pin wide-body SOIC (WSOIC) package. It operates at data rates up to 1Mbps and provides 5000VRMS (60s) of isolation between the CAN-protocol controller-side (TXD, RXD) and the physical bus-side wires (CANH, CANL), integrating the isolation barrier, an isolated DC-DC transformer driver, and an LDO for bus-side power. A CAN transceiver is a physical-layer interface IC that translates the differential CAN protocol from a microcontroller into the robust voltage levels required on a CAN bus, while providing protection against ground loops, common-mode transients, and bus faults. Isolated CAN transceivers additionally place a galvanic barrier between the controller and the bus, eliminating ground-potential differences and surge propagation in industrial environments. The MAX14882AWE falls in the hierarchy: CAN transceiver -> automotive/industrial bus interface IC -> interface IC -> integrated circuit. Key features include a ±25V receiver common-mode input range (exceeding the ISO 11898-2 requirement of -2V to +7V), ±54V fault-tolerant CANH/CANL outputs, and ±15kV HBM ESD protection on the bus-side pins to GNDB. The controller-side operates from VDDA = 3.0V to 5.5V, while the bus-side runs from VDDB = 4.5V to 5.5V with an integrated transformer driver that supports an external transformer for isolated supply rails. Operating temperature spans -40°C to +125°C. The device supports a low-power standby mode for remote-wakeup and an integrated POL (polarity swap) feature that swaps CANH and CANL functions to correct cross-wired cables via software. The wide-body SOIC package provides 8mm of creepage and clearance, satisfying IEC 60950 and IEC 62368 reinforced insulation requirements for industrial and renewable energy installations. Typical applications include isolated CAN nodes in solar inverters, industrial PLC backplanes, electric vehicle battery management systems (BMS), and any industrial network requiring robust galvanic isolation between the controller MCU and the noisy CAN bus cable plant. When designing with the MAX14882AWE, the external transformer (e.g., a 1:1.3 or 1:1 turns ratio miniature transformer) is the critical BOM item that determines the isolated bus-side rail voltage and overall efficiency. PCB layout must maintain 8mm creepage across the WSOIC body and avoid copper traces under the package to preserve the reinforced insulation barrier. This page synthesizes drop-in alternatives, distributor pricing as of 2026-10-16, design notes, and a side-by-side comparison versus MAX14882 family variants and competing isolated CAN transceivers not found in the manufacturer datasheet alone.
MAX14882AWE+T - 5kVRMS Isolated CAN Transceiver | Analog Devices
The Analog Devices (formerly Maxim Integrated) MAX14882AWE+T is a 5kVRMS isolated high-speed CAN transceiver that integrates galvanic isolation between the CAN-protocol controller side (TXD, RXD) and the physical CAN bus wires (CANH, CANL), delivering 1Mbps data rate over a 3.0V to 5.5V controller-side supply and 4.5V to 5.5V bus-side supply in a 16-pin wide-body SOIC (W SOIC) package with 8mm of creepage and clearance. What is an isolated CAN transceiver? A CAN (Controller Area Network) transceiver is the physical-layer interface between a digital CAN protocol controller and the differential CAN bus cables. An "isolated" variant adds a galvanic isolation barrier (here, 5kVRMS) that breaks ground loops, rejects common-mode transients, and protects low-voltage microcontrollers from high-voltage faults on the industrial CAN bus. The MAX14882 sits in the product hierarchy: CAN transceiver -> automotive/industrial transceiver -> isolated interface IC -> power management and signal conditioning IC family. Key features include a ±25V receiver input common-mode range (exceeding the ISO 11898-2 requirement of -2V to +7V), ±54V fault tolerance on CANH/CANL, ±15kV HBM ESD protection on bus-side pins to GNDB, an integrated transformer driver with LDO that supplies VDDB from an external transformer, and a POL (polarity) pin that swaps CANH/CANL functions for software correction of cross-wired bus cables. The integrated isolation eliminates the need for a discrete digital isolator plus an external isolated DC/DC supply, reducing BOM count and PCB footprint by roughly 50%. Typical applications include industrial automation networks (CANopen, DeviceNet), building automation HVAC controllers, solar inverter inter-module communication, electric vehicle battery management systems (CAN-FD ready), and any microcontroller-to-bus interface requiring robust galvanic isolation in harsh electrical environments. When designing with this part, place decoupling capacitors (typically 100nF plus 10µF) on both VDDA and VDDB as close to the IC as possible, and route the external transformer primary traces symmetrically. The integrated LDO can source up to 300mA for auxiliary circuits after supplying the internal 130mA MAX14882 load, but derate at high bus-side temperatures.
MAX14931AASE+T - 4-Ch 1Mbps 2.75kVrms Digital Isolator | ADI
The Analog Devices (formerly Maxim Integrated) MAX14931AASE+T is a 4-channel, 2.75kVRMS digital isolator in a 16-pin wide-body SOIC package, supporting 1 Mbps data rate with a typical CMTI of 25 kV/µs. The device transfers digital signals across an isolation barrier using Maxim's proprietary process technology, and the 3/1 unidirectional channel configuration makes it well suited to SPI, RS-232, RS-485, and general-purpose digital I/O isolation. A digital isolator is a semiconductor device that uses an internal isolation barrier - typically a capacitive, magnetic, or optical coupling structure - to transmit logic-level signals between two galvanically isolated voltage domains while blocking DC and low-frequency currents. Digital isolators replace optocouplers in modern designs and are classified within the broader signal-chain and interface-IC family. They are key building blocks for reinforced insulation, functional safety, and high-voltage system partitioning. Key features of the MAX14931AASE+T include 2750 Vrms withstand voltage, 1 Mbps guaranteed data rate across -40 °C to +125 °C, 25 kV/µs typical common-mode transient immunity, low propagation delay of 42.9 ns, and 1.71 V minimum supply voltage. The wide-body SOIC-16 package provides the required creepage and clearance for reinforced isolation at 2.75 kVRMS, simplifying PCB layout for industrial bus isolation. Internally, the MAX14931AASE+T uses Maxim's proprietary CMOS isolation technology with integrated dc-dc converter control on the secondary side for optional isolated power. Each of the four channels is unidirectional, three in one direction and one in the reverse direction, matching typical SPI / UART peripheral-interface signalling patterns without requiring external direction-control logic. Typical applications include isolated SPI interfaces for industrial PLCs, isolated RS-485 transceivers in factory automation, isolated gate-drive signal conditioning for motor drives, and medical device patient-isolated data links. The wide operating temperature range supports both industrial and automotive-grade designs. When designing with this device, follow the SOIC-16 wide-body creepage and clearance guidelines: maintain at least 8 mm of PCB spacing under the package body and avoid routing copper traces between pins to preserve the 2.75 kVRMS rating. Decouple both VDD pins with 0.1 µF low-ESR ceramic capacitors placed within 2 mm of the supply pins.
MAX14931BAWE+T - 4-Ch 2.75kVrms Digital Isolator | Analog Devices
The Analog Devices (formerly Maxim Integrated) MAX14931BAWE+T is a 4-channel, 2.75 kVrms general-purpose digital isolator housed in a 16-pin wide-body SOIC (WSOIC-16) package with 3/1 channel direction configuration. It supports data rates up to 25 Mbps and delivers typical common-mode transient immunity (CMTI) of 25 kV/µs, transferring digital signals across an isolation barrier using the proprietary process technology that integrates a single-ended CMOS or LVCMOS interface on each side. A digital isolator is a semiconductor device that uses galvanic isolation (typically via on-chip transformers, capacitive barriers, or optocouplers) to allow high-speed digital communication between two domains that sit at very different ground potentials or that must remain safety-isolated. Digital isolators -> isolators -> interface ICs -> signal conditioning ICs -> semiconductors is the taxonomy hierarchy. Compared with legacy optocouplers, CMOS-based digital isolators offer faster data rates, tighter channel-to-channel matching, lower power consumption, and CMTI performance two to three orders of magnitude higher. Key features of the MAX14931BAWE+T include a 2.75 kVrms withstand voltage per UL 1577, default output state options (high or low) across the MAX14930/MAX14931/MAX14932 family, 1.71 V to 5.5 V wide supply range on both sides, and an operating temperature range of -40 °C to +125 °C. The integrated refresh circuit maintains stable output levels when input signals remain static for long durations, eliminating the input-signal minimum-rate constraints common to many AC-coupled isolators. The MAX14931BAWE+T uses Maxim's proprietary process technology that embeds an isolation barrier directly inside the die-package stack-up. This monolithically integrated approach reduces channel-to-channel skew to under 4 ns and provides a low pulse-width distortion around 5 ns, preserving signal integrity at the 25 Mbps maximum data rate even in motor-drive and industrial-servo environments where dv/dt transients easily exceed 10 kV/µs. Typical applications include isolated RS-485/RS-422 interfaces, isolated SPI or I2C data links between MCU and high-voltage drivers, industrial fieldbus isolation (Profibus, Modbus, CAN), isolated gate-driver signal paths for IGBT and SiC power stages, and medical equipment patient-isolated signal acquisition. The wide 1.71 V to 5.5 V supply range lets the same part serve 1.8 V, 2.5 V, 3.3 V, and 5 V logic rails without level-shifters. When designing with this device, place 0.1 µF decoupling capacitors as close as possible to each VDD pin on both primary and secondary sides; for optimal CMTI performance, route the isolator away from fast-switching traces, and add a stitching capacitance between the two ground domains to shunt common-mode currents. The default output state (A/B/C/D suffix) must be chosen to match the system fail-safe polarity required by downstream logic. This page synthesizes distributor stock and pricing snapshots, drop-in same-package alternatives, parametric comparison tables, and PCB design notes not consolidated on any single manufacturer or distributor page.
MAX14931DASE+T - 4-Ch 2.75kVrms Digital Isolator, 1Mbps | ADI
The Analog Devices (formerly Maxim Integrated) MAX14931DASE+T is a 4-channel, 2.75 kVrms digital isolator with a maximum data rate of 1 Mbps and 25 kV/us (typical) CMTI, housed in a 16-pin wide-body SOIC package. The device provides galvanic isolation between circuits using Maxim's proprietary process technology, eliminating the need for external isolation components. What is a digital isolator? A digital isolator is an integrated circuit that transfers digital signals across an isolation barrier using capacitive, inductive (transformer), or optical coupling while blocking high voltages and transients. Digital isolators replace optocouplers in modern designs, offering higher speed, lower power consumption, better CMTI, and longer operational life. They sit in the signal chain hierarchy of interface IC -> isolator -> digital isolator -> quad-channel digital isolator, providing functional safety and ground isolation in industrial, medical, and renewable-energy systems. Key specifications include 2.75 kVrms isolation voltage rating per UL 1577, 1 Mbps maximum data rate across four unidirectional channels (3-in/1-out configuration in the MAX14931DASE variant), 25 kV/us typical common-mode transient immunity (CMTI), and a wide 1.71 V to 5.5 V supply range on both sides. The device operates across the -40 C to +125 C industrial temperature range and consumes under 3 mA per channel at 1 Mbps. The wide-body SOIC-16 footprint provides the required creepage and clearance for reinforced insulation at 2.75 kVrms. The MAX14931DASE+T architecture uses capacitive isolation with differential signaling across the isolation barrier and integrated refresh circuitry on the secondary side, achieving deterministic timing with under 50 ns propagation delay. This topology avoids the aging and CTR-degradation mechanisms of optocouplers, providing stable performance over the device's lifetime. Typical applications include isolated SPI/RS-232/RS-485 interfaces, industrial fieldbus isolation (Modbus, Profibus), PLC digital I/O modules, isolated gate drivers for motor control and solar inverters, medical device signal isolation per IEC 60601-1, and battery management system (BMS) communications in electric vehicles. The MAX14931 variant (3-in/1-out channel direction) suits SPI-style clock/SS/MOSI/MISO isolation where the host side has three inputs and one output. When designing with the MAX14931DASE+T, place 0.1 uF bypass capacitors as close as possible to each VDD pin and ensure adequate creepage on the PCB (at least 8 mm for 2.75 kVrms reinforced insulation per IEC 60730-1). The EN pin controls the output enable state and should be tied high for normal operation or left open if unused. This page synthesizes distributor pricing, drop-in alternatives drawn from the same ADI/Maxim family and competitor cross-reference data, and practical PCB layout notes that extend beyond the manufacturer datasheet.
MAX14933AWE+ - 2-Ch 2.75kVrms I2C Digital Isolator | ADI/Maxim
The Analog Devices (formerly Maxim Integrated) MAX14933AWE+ is a two-channel, 2.75kVrms I2C digital isolator that uses proprietary process technology to galvanically isolate two bidirectional open-drain channels in a 16-pin wide-body SOIC package (0.295"/7.50mm). It supports data rates up to 2 Mbps and tolerates ambient temperatures up to +125°C, with a typical common-mode transient immunity (CMTI) of 25 kV/us. Per the ADI MAX14933 datasheet, this part targets I2C/SMBus applications where the bus must cross an isolation barrier between two different power domains. A digital isolator is a semiconductor device that transmits logic-level signals across a galvanic isolation barrier (typically a high-voltage capacitor or transformer inside an IC package) while blocking DC and low-frequency AC between input and output. Digital isolators (and their ancestors, optocouplers) belong to the signal-isolation family, which also includes isolated gate drivers and isolated ADCs. Compared to optocouplers, CMOS digital isolators offer 10x faster data rates, 5-10x lower power consumption, tighter CMTI, and no LED-aging concerns. The MAX14933 family specifically targets I2C/SMBus, where both clock and data lines are bidirectional and open-drain, requiring unique bidirectional channel design. Key features of the MAX14933AWE+ include 2.75kVrms isolation rating, two bidirectional open-drain channels suitable for SDA/SCL, 2 Mbps data rate, 3.0V to 5.5V supply range on both sides, 25 kV/us typical CMTI, and integrated hot-swap friendly architecture for cards that plug into a live backplane. The device replaces discrete optocoupler-plus-logic solutions with a single CMOS IC, simplifying PCB layout and reducing BOM count in isolated I2C designs. The MAX14933 employs proprietary CMOS isolation technology that embeds the isolation barrier on-chip rather than relying on a separate transformer or LED. The two bidirectional channels each contain edge-detection and channel-reversal logic so that the open-drain I2C signal can flow from side-A to side-B and back without external direction-control circuitry. This architecture delivers the speed and CMTI of modern digital isolators while preserving the bidirectional open-drain behavior required by the I2C specification. Typical applications include isolated I2C communication between microcontrollers and sensors in industrial automation, isolated SMBus interface to hot-swap-able power supplies, isolated EEPROM or temperature-sensor readouts in patient monitors, battery-management I2C buses in 400V/800V EV battery packs, and isolated GPIO expansion over I2C backplanes. The wide-body SOIC-16 (7.50mm) package provides the required 8mm creepage/clearance for 2.75kVrms reinforced isolation. When designing with this part, allocate the wide-body SOIC-16 footprint carefully - the 7.50mm body width is required to meet the 2.75kVrms creepage and clearance, and substituting a narrow-body SOIC-16 will violate safety distances. Both sides need a local 3.0V-5.5V supply with a 0.1uF decoupling capacitor close to each VDD pin, and SDA/SCL pull-up resistors must be placed on the side that drives each line low. This page combines distributor pricing, drop-in alternatives in the same SOIC-16 footprint, and practical design notes that supplement the manufacturer datasheet.