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SP485CS-L - 5Mbps RS-485/RS-422 Transceiver | MaxLinear
The MaxLinear SP485CS-L is a +5 V, half-duplex differential transceiver supporting RS-485 and RS-422 communication at rates up to 5000 kbps. The device is supplied in an 8-pin PDIP package and is intended for industrial, instrumentation, and point-to-point data links. It combines a low-power BiCMOS implementation with a half-duplex driver and receiver, providing a compact interface between digital logic and a balanced communications cable. An RS-485/RS-422 transceiver is an interface IC that converts single-ended logic signals into differential signals for reliable, noise-tolerant transmission over longer cable runs. The differential signal helps reduce common-mode noise and improves signal integrity in industrial environments. The SP485 family is designed for half-duplex operation, meaning the same differential pair can be used for transmitting and receiving when direction control is managed by external logic. The SP485CS-L operates from a 4.75 V to 5.25 V supply according to the verified distributor data. The SP485 family is identified as a low-power BiCMOS RS-485/RS-422 transceiver family, and the SP485 variant supports communication up to 5 Mbps. The driver/receiver architecture is suited to industrial control, data acquisition, building automation, and equipment interfaces where a robust balanced link is preferred. The PDIP-8 package supports conventional through-hole PCB assembly and tube packaging. Because the device is half-duplex, a direction-control circuit is typically used to enable the driver or receiver. Correct termination, biasing, grounding, and cable routing are essential for dependable operation, especially at higher data rates where transmission-line effects become more significant. Typical applications include industrial RS-485 buses, remote sensor nodes, PLC and instrumentation links, motor-control systems, and communications between distributed modules. The 5 Mbps capability is useful for relatively high-speed local links, while actual cable length and topology remain application-dependent. Designers should verify the exact pin functions, electrical limits, and thermal performance against the manufacturer datasheet before layout. A small decoupling capacitor should be placed close to the supply pins, and the differential pair should be routed as a controlled-impedance pair when board geometry permits. The transceiver must not be replaced with a functionally similar part unless package, pinout, logic levels, drive strength, receiver thresholds, and timing have all been confirmed.
SP485E - Enhanced Low Power Half-Duplex RS-485/RS-422 Transceiver | MaxLinear
The MaxLinear SP485E is an enhanced low-power, half-duplex RS-485/RS-422 transceiver fabricated in a proprietary BiCMOS process. It contains one driver and one receiver, supports data rates up to 2.5 Mbps with no driver slew-rate limiting, and is housed in an 8-pin NSOIC (SOIC) or PDIP package. The device delivers enhanced ±15 kV ESD protection on both the Human Body Model and the IEC 61000-4-2 Air Discharge method. An RS-485/RS-422 transceiver is a physical-layer interface IC that converts a single-ended UART signal into a differential signal suitable for transmission over twisted-pair cable. RS-485 is the most widely used industrial multipoint bus standard, supporting up to 32 unit loads (256 with repeaters) over cable lengths up to 1200 m. Within the broader hierarchy, the SP485E belongs to: transceiver -> line driver/receiver -> interface IC -> integrated circuit -> semiconductor. Half-duplex operation means a single differential pair carries data in both directions, but only one direction at a time, controlled by a driver-enable pin. Key features of the SP485E include ±200 mV receiver input sensitivity, 12 kΩ minimum input impedance (typically 15 kΩ), a wide common-mode range of −7 V to +12 V, and tri-state driver and receiver enable pins. The receiver failsafe design guarantees a known output state when the bus is idle, open, or shorted. Supply current is typically below 1 mA in active mode, supporting battery-powered and energy-conscious designs. Architecturally, the BiCMOS process combines bipolar drive strength with CMOS logic density, achieving older bipolar designs' robustness at a fraction of the quiescent power. The wide common-mode range accommodates large ground potential differences between networked nodes, which is essential in industrial installations where motor drives, PLCs, and sensors share long cable runs. Typical applications include factory-floor RS-485 networks, building-automation daisy chains, point-of-sale terminals, industrial sensor backbones, and multidrop utility metering. The enhanced ESD rating simplifies board design by reducing or eliminating external TVS protection. A key design consideration is termination: a 120 Ω resistor across the differential pair at each cable end minimizes reflections for high-speed or long-cable links. Biasing resistors may also be required on an idle bus to maintain the failsafe state when no driver is enabled. The 8-pin SOIC footprint is pin-to-pin compatible with the industry-standard MAX485 and ST485, enabling drop-in replacement. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, giving engineers a single reference for sourcing and second-sourcing the SP485E.
SP485ECN-L - 10Mbps Half-Duplex RS-485 Transceiver | MaxLinear (Tape & Reel)
MaxLinear SP485ECN-L is a 5 V, 1-driver and 1-receiver half-duplex RS-422/RS-485 interface transceiver operating up to 10 Mbps in an 8-pin SOIC package. It combines a BiCMOS line interface with low-power operation, enhanced ESD protection exceeding ±15 kV, and compatibility with RS-485 and RS-422 serial protocols. The tape-and-reel ordering code supports automated production and assembly. A differential line transceiver is an interface IC that translates logic-level signals into balanced differential transmissions and converts received differential signals back into CMOS-compatible logic. In this product hierarchy, the SP485ECN-L is a half-duplex RS-485/RS-422 transceiver within the interface IC and semiconductor categories. Half-duplex operation means the driver and receiver share the same bus pair, allowing a node to transmit or receive but not both simultaneously. The verified product information identifies one driver, one receiver, a single 5 V supply, RS-485 protocol support, and an 8-SOIC package measuring 0.154 inches, or 3.90 mm, wide. MaxLinear states that the SP485 family supports RS-485 and RS-422 operation up to 5 Mbps, while comparison data for the -L ordering variant lists a 10 Mbps data rate. The enhanced ESD capability exceeds ±15 kV using both Human Body Model and IEC 61000-4-2 air-discharge methods. BiCMOS implementation combines bipolar and CMOS characteristics to support low-power operation without sacrificing line performance. The SP485ECN-L is suitable for industrial equipment, data acquisition, building controls, factory interfaces, and other balanced serial links where multidrop communications, noise immunity, and standardized protocol support are important. Its half-duplex architecture simplifies wiring but requires software or hardware coordination of transmit and receive states. For PCB design, keep the transceiver close to the line connector and provide a low-return-path ground plane beneath and around the device. Route the balanced driver and receiver traces as a closely coupled differential pair with continuous reference planes and minimized stubs. The supplied data does not provide exact pin names, differential impedance recommendations, input capacitance, supply-current limits, or junction-temperature limits, so those values must be confirmed in the manufacturer datasheet before final release. This page synthesizes verified distributor and manufacturer information, cross-reference evidence, pricing information, package details, and practical interface-design guidance. It distinguishes confirmed values from unavailable technical parameters and avoids treating the web-search cross-reference suggestions as guaranteed drop-in replacements without package and pinout verification.
SP485ECN-L/TR - 10Mbps Half-Duplex RS-485 Transceiver | MaxLinear
MaxLinear SP485ECN-L/TR is a 5 V, 1-driver and 1-receiver half-duplex RS-422/RS-485 interface transceiver operating up to 10 Mbps in an 8-pin SOIC package. It combines a BiCMOS line interface with low-power operation, enhanced ESD protection exceeding ±15 kV, and compatibility with RS-485 and RS-422 serial protocols. The tape-and-reel ordering code supports automated production and assembly. A differential line transceiver is an interface IC that translates logic-level signals into balanced differential transmissions and converts received differential signals back into CMOS-compatible logic. In this product hierarchy, the SP485ECN-L/TR is a half-duplex RS-485/RS-422 transceiver within the interface IC and semiconductor categories. Half-duplex operation means the driver and receiver share the same bus pair, allowing a node to transmit or receive but not both simultaneously. The verified product information identifies one driver, one receiver, a single 5 V supply, RS-485 protocol support, and an 8-SOIC package measuring 0.154 inches, or 3.90 mm, wide. MaxLinear states that the SP485 family supports RS-485 and RS-422 operation up to 5 Mbps, while comparison data for the -L ordering variant lists a 10 Mbps data rate. The enhanced ESD capability exceeds ±15 kV using both Human Body Model and IEC 61000-4-2 air-discharge methods. BiCMOS implementation combines bipolar and CMOS characteristics to support low-power operation without sacrificing line performance. The SP485ECN-L/TR is suitable for industrial equipment, data acquisition, building controls, factory interfaces, and other balanced serial links where multidrop communications, noise immunity, and standardized protocol support are important. Its half-duplex architecture simplifies wiring but requires software or hardware coordination of transmit and receive states. For PCB design, keep the transceiver close to the line connector and provide a low-return-path ground plane beneath and around the device. Route the balanced driver and receiver traces as a closely coupled differential pair with continuous reference planes and minimized stubs. The supplied data does not provide exact pin names, differential impedance recommendations, input capacitance, supply-current limits, or junction-temperature limits, so those values must be confirmed in the manufacturer datasheet before final release. This page synthesizes verified distributor and manufacturer information, cross-reference evidence, pricing information, package details, and practical interface-design guidance. It distinguishes confirmed values from unavailable technical parameters and avoids treating the web-search cross-reference suggestions as guaranteed drop-in replacements without package and pinout verification.
SP485EEN-L - 10Mbps Half-Duplex RS-485 IC | MaxLinear
The MaxLinear SP485EEN-L is a low-power, half-duplex RS-422 and RS-485 interface transceiver with a data rate of 10,000 kbps, enhanced ESD protection, and an 8-pin SOIC package. Its 4.75 V to 5.25 V operating supply supports conventional 5 V industrial and commercial equipment while the RS-485/RS-422 interface enables bidirectional communication over long, noise-prone differential buses. An RS-485 transceiver is an interface IC that converts logic-level transmit and receive signals into differential bus voltages. The SP485EEN-L combines one transmitter and one receiver in a half-duplex arrangement, so the driver and receiver share the same differential pair. In the hierarchy of electronic components, it belongs to interface ICs and specifically to the RS-485 transceiver family used for industrial automation, instrumentation, and building systems. The verified manufacturer information identifies a 4.75 V to 5.25 V supply range, operation from -40 C to +85 C, and enhanced ESD tolerance exceeding 15 kV using both the Human Body Model and the IEC1000-4-2 air-discharge method. The low-power architecture is intended to reduce system consumption, while enhanced ESD capability improves robustness in electrically noisy installations. A 10,000 kbps rate also supports communication rates commonly required by RS-485 equipment. The SP485E and SP481E family is designed as a half-duplex RS-422 and RS-485 interface with pin-to-pin compatibility with Exar SP481 and SP485 devices and other industry-standard implementations. The SOIC-8 package supports conventional surface-mount assembly. Because the device is half-duplex, firmware and external direction-control logic must prevent the transmitter and receiver from driving the bus simultaneously. Typical uses include industrial RS-485 links between controllers and sensors, factory automation equipment, remote instrumentation, building-control networks, and data-acquisition systems. The differential interface is particularly useful where ground-potential differences and external noise could impair a single-ended communication path. Its 10,000 kbps capability allows it to serve both moderate-speed control networks and faster point-to-point links. Designers should include bus termination, biasing, protection, and a controlled DE/RE direction sequence. The transmitter should be disabled while receiving, and enable pins should not be allowed to float. A termination resistor belongs at each end of the main bus segment rather than at every node, while transient protection may be added when the cable leaves a protected enclosure. This product page consolidates verified manufacturer information, distributor availability and pricing, package details, cross-reference candidates, and practical RS-485 design guidance. It also distinguishes documented drop-in candidates from package-compatible parts that still require datasheet verification before substitution.
SP485EEN-L/TR - 10Mbps Low-EMI RS-485 Transceiver | MaxLinear
The MaxLinear, Inc. SP485EEN-L/TR is a single half-duplex RS-422/RS-485 transceiver with one transmitter and one receiver, a maximum data rate of 10 Mbps, and an 8-pin SOIC package. Designed for low-power industrial communication, it operates from a 4.75 V to 5.25 V supply and combines a BiCMOS implementation with enhanced ESD protection. According to the available Exar-family documentation, ESD tolerance exceeds ±15 kV for both the Human Body Model and the IEC 61000-4-2 air-discharge method. These characteristics make it suitable for robust point-to-point and multidrop industrial serial links where low EMI, compact size, and reliable transient protection are important. An RS-485 transceiver is an interface IC that combines a differential line driver and differential receiver so that digital logic can communicate over a balanced, multipoint cable. It belongs to the hierarchy of serial-interface transceivers, physical-layer interface ICs, interface ICs, and semiconductors. Unlike a single-ended communication standard, RS-485 uses differential signaling and commonly pairs with termination resistors, biasing networks, galvanic-isolation components, and protected connector interfaces. The SP485EEN-L/TR provides a maximum signaling rate of 10 Mbps, making it suitable for factory automation, industrial controllers, instrumentation, and other equipment that requires faster balanced-bus communication than conventional low-speed RS-485 links. Its half-duplex architecture uses one shared differential bus pair for transmission and reception. The listed electrical range of 4.75 V to 5.25 V supports a conventional 5 V supply environment. MaxLinear describes the SP485 family as a BiCMOS design that supports low-power operation without sacrificing performance. The SP485EEN-L/TR is also identified as pin-to-pin compatible with the earlier SP481 and SP485 devices and with widely used industry-standard transceivers. This compatibility is important when an existing PCB footprint must be retained, although the designer must still verify supply voltage, driver current, receiver thresholds, shutdown behavior, and bus-direction-control requirements. Typical applications include industrial sensor networks, programmable-logic-controller communication links, motor-control equipment, building-automation controllers, test and measurement systems, and external data-acquisition modules. In a multidrop bus, the device can interface a host UART to a terminated and biased RS-485 network. In a point-to-point link, two devices can communicate over a longer balanced cable, subject to the transceiver and connector requirements established in the system design. The principal design consideration is preserving signal integrity and transient immunity. Place the transceiver close to the connector, provide a continuous ground reference, use appropriate termination and fail-safe biasing, and route the differential pair together with consistent geometry. Adequate supply decoupling is also required, while external protection may still be necessary for exposed cables or severe industrial environments. This product record combines verified distributor pricing, manufacturer family information, pin-compatible cross references, package details, and practical integration guidance. It also distinguishes confirmed drop-in candidates from alternatives whose detailed electrical limits still require comparison against the manufacturer datasheet.
SP485EEP-L - 5Mbps Half-Duplex RS-485 Transceiver | MaxLinear
The MaxLinear SP485EEP-L is a low-power, half-duplex RS-485 and RS-422 transceiver operating at up to 5 Mbps from a single 5 V supply, housed in an 8-pin PDIP package. It uses a BiCMOS process to combine low power consumption with high communication speed and enhanced electrostatic-discharge protection. An RS-485 transceiver is an interface IC that converts logic-level transmit and receive signals into a differential, multipoint bus. Within the hierarchy of serial-interface devices, the SP485EEP-L belongs to the RS-485 transceiver class, where it is also compatible with RS-422 signaling. Its half-duplex arrangement means the bus can transmit or receive, but not both simultaneously. The principal features include operation up to 5 Mbps, enhanced ESD tolerance exceeding ±15 kV for the Human Body Model and the IEC61000-4-2 air-discharge method, and a low-power BiCMOS design. The device operates over a -40°C to +85°C temperature range and supports both RS-485 and RS-422 serial protocols. Only a 5 V supply is required. The SP485EEP-L belongs to the SP481E and SP485E transceiver family, which is designed to be pin-to-pin compatible with the original Exar SP481 and SP485 devices and popular industry-standard implementations. Its enhanced ESD performance is especially useful where the transceiver connects directly to an exposed industrial or communications cable. Typical uses include industrial RS-485 buses, building-automation controllers, instrumentation links, data-acquisition equipment, and other low- to high-speed isolated or non-isolated multidrop networks. In a half-duplex implementation, the DE and active-low RE inputs determine whether the transmitter or receiver is enabled. When laying out a circuit, route the differential A and B bus connections as a controlled-impedance pair, provide the decoupling and termination components recommended by the manufacturer, and connect the transceiver interface pins according to the complete system grounding strategy. The 5 Mbps capability does not remove the need for good cable, termination, and grounding practice. This product data combines the verified MaxLinear and distributor information with explicit comparison rows, application guidance, and practical interface-design notes. It distinguishes verified facts from unavailable commercial values and identifies the limits of the available drop-in replacement evidence.
SP485EMN-L - 10Mbps Low-Power RS-485 Transceiver | MaxLinear
The MaxLinear SP485EMN-L is a low-power, half-duplex RS-422/RS-485 interface transceiver with a 10,000 kbps data rate, enhanced ESD protection, and an 8-pin SOIC package. It operates from a 4.75 V to 5.25 V supply and is designed for bidirectional industrial data links requiring one driver and one receiver. Its enhanced low-EMI implementation and BiCMOS process support reliable communication over longer, noisy cable runs. An RS-485 transceiver is an interface IC that combines a differential line driver and differential receiver into a physical-layer component for balanced serial communication. The SP485 belongs to the RS-422/RS-485 interface hierarchy within the broader semiconductor and industrial communications market. Half-duplex operation means the driver and receiver share the same differential pair, allowing the connected device to transmit or receive, but not both simultaneously. Key features include support for both RS-422 and RS-485 protocols, operation across a 4.75 V to 5.25 V supply range, a maximum data rate of 10,000 kbps, and an industrial temperature range of -40°C to +125°C. The SP485EMN-L family also provides enhanced ESD tolerance of more than ±15 kV for both the human body model and the IEC 61000-4-2 air-discharge method, improving protection during cable connection and industrial installation. The BiCMOS architecture combines bipolar and CMOS characteristics to provide low-power operation without sacrificing data-rate performance. A single driver and single receiver support point-to-point and multidrop bus arrangements when the system includes the required biasing, termination, protection, and protocol controls. The low-EMI designation is particularly relevant to industrial environments where radiated emissions and cable transients can affect neighboring equipment. Typical applications include industrial serial buses, building automation controllers, factory data acquisition, remote sensor nodes, industrial gateways, and instrumentation links. The device can also bridge a legacy UART or microcontroller port to a balanced RS-485 network. Its wide temperature range and enhanced ESD performance make it suitable for equipment exposed to temperature variation and electrostatic discharge during field installation or maintenance. Designers should provide termination at both ends of the bus, bias the differential pair at one location, route the driver and receiver outputs as a balanced pair, and keep unprotected cable connectors away from sensitive logic. Supply and ground decoupling should be placed close to the IC. The half-duplex DE and /RE control functions must be sequenced so that the driver is disabled while the receiver remains active during bus turnaround. This product data combines verified distributor availability, package and electrical information, candidate drop-in comparisons, and practical implementation guidance. It is intended to help engineers evaluate the SP485EMN-L for industrial RS-485 designs, verify board compatibility, and identify the electrical and layout conditions needed for dependable field operation.
SP485EMN-L/TR - 5Mbps RS-485 Transceiver | MaxLinear
The MaxLinear SP485EMN-L/TR is a low-power, half-duplex RS-422/RS-485 line transceiver with one driver and one receiver, operating at data rates up to 5 Mbps in an 8-pin SOIC package. The device uses a BiCMOS architecture to combine low power consumption with RS-485 and RS-422 performance, while enhanced ESD protection supports industrial communication equipment exposed to electrostatic discharge. An RS-485 transceiver is a physical-layer interface IC that converts logic-level signals into differential bus signals and receives differential bus signals back into CMOS-compatible logic. In the hierarchy, the SP485EMN-L/TR is a half-duplex line transceiver, part of the broader RS-422/RS-485 interface IC and interface-driver/receiver family within integrated interface semiconductors. Differential signaling improves noise immunity by rejecting common-mode voltage that can disrupt single-ended logic interconnects. The principal verified features are one driver, one receiver, half-duplex operation, RS-422 and RS-485 protocol support, operation up to 5 Mbps, and low-power BiCMOS design. The SP485EMN-L/TR also provides enhanced ESD performance, with available comparison data indicating tolerance above ±15 kV for the human-body model and IEC 61000-4-2 air-discharge method. The 8-pin SOIC package is compatible with standard surface-mount assembly and leaded-solder inspection processes. A typical half-duplex circuit connects the transceiver driver and receiver to the same differential pair through direction-control logic. The DE and RE inputs determine whether the node transmits or receives. Designers must manage driver enable timing, bus turnaround delays, termination, biasing, and protection-network placement to avoid contention and receiver misinterpretation during direction changes. Common applications include industrial automation links, building-control networks, remote sensor modules, industrial instrumentation, and long-distance RS-485 equipment links. The 5-Mbps capability supports high-speed point-to-point or multipoint industrial buses, while the low-power BiCMOS implementation is useful when system-level energy consumption matters. The main design consideration is the transceiver interface around the SOIC-8 pins. Keep the bus trace path short, preserve symmetry between differential conductors, place termination only at physical bus endpoints, and use suitable common-mode protection for exposed cables. The DE/RE control signals should be sequenced so the receiver is enabled before the driver transmits and the driver is disabled before the receiver switches. This page combines manufacturer-family information, distributor availability, package details, verified cross-reference results, replacement guidance, and application-specific engineering notes to help engineers evaluate the SP485EMN-L/TR beyond a basic distributor listing.
SP485EN-L - 5Mbps RS-485/RS-422 Transceiver | MaxLinear
MaxLinear SP485EN-L is a single half-duplex differential transceiver for RS-485 and RS-422 links, supporting data rates up to 5Mbps from a 4.75V to 5.25V supply in an 8-pin SOIC package. Its BiCMOS implementation combines low power with differential line-driver and receiver functions. An RS-485/RS-422 transceiver is an interface IC that converts logic-level signals into balanced differential transmissions and reconstructs received data from differential bus voltage. These transceivers form the physical communication layer between processors, controllers, sensors, and remote equipment, with RS-422 commonly supporting point-to-point links and RS-485 supporting multipoint buses. The SP485EN-L family provides half-duplex operation, one differential driver, and one differential receiver. Its 5Mbps capability suits high-rate industrial, instrumentation, and embedded links, while the 5V-only operating range makes supply compatibility a central design consideration. A nominal 5V supply is accepted, and the verified operating range extends from -40°C to 85°C. The BiCMOS process is intended to reduce power use relative to older bipolar transceiver designs without sacrificing line performance. The receiver uses differential inputs with Schmitt-trigger behavior, supporting robust decoding of signals shaped by cable attenuation, reflections, and common-mode noise. Exact driver load, receiver sensitivity, propagation delay, and input-current figures are not present in the supplied verified data and therefore require confirmation from the manufacturer datasheet. Typical uses include industrial controller links, factory automation equipment, remote sensor networks, data acquisition units, building controls, and embedded serial buses. In a half-duplex design, the direction-control signal determines whether the device transmits or receives; only the selected node should enable its driver to prevent multiple drivers from driving the same bus. Place the transceiver close to the bus connector and provide the decoupling and protection required by the system. A common RS-485 layout uses a low-impedance ground reference alongside A, B, and the differential pair. External protection, termination, biasing, and isolation remain application-specific choices rather than functions confirmed as integrated into the SP485EN-L. This product summary combines the verified distributor, manufacturer, and cross-reference information with practical RS-485 design guidance. It distinguishes documented parameters from missing electrical details, focuses on the genuine 8-pin drop-in alternatives, and helps engineers evaluate supply, speed, temperature, bus topology, and protection requirements before procurement.
SP485EN-L/TR - 5Mbps RS-485/RS-422 Transceiver | MaxLinear (Tape & Reel)
MaxLinear SP485EN-L/TR is a single half-duplex differential transceiver for RS-485 and RS-422 links, supporting data rates up to 5Mbps from a 4.75V to 5.25V supply in an 8-pin SOIC package. Its BiCMOS implementation combines low power with differential line-driver and receiver functions. An RS-485/RS-422 transceiver is an interface IC that converts logic-level signals into balanced differential transmissions and reconstructs received data from differential bus voltage. These transceivers form the physical communication layer between processors, controllers, sensors, and remote equipment, with RS-422 commonly supporting point-to-point links and RS-485 supporting multipoint buses. The SP485EN-L/TR family provides half-duplex operation, one differential driver, and one differential receiver. Its 5Mbps capability suits high-rate industrial, instrumentation, and embedded links, while the 5V-only operating range makes supply compatibility a central design consideration. A nominal 5V supply is accepted, and the verified operating range extends from -40°C to 85°C. The BiCMOS process is intended to reduce power use relative to older bipolar transceiver designs without sacrificing line performance. The receiver uses differential inputs with Schmitt-trigger behavior, supporting robust decoding of signals shaped by cable attenuation, reflections, and common-mode noise. Exact driver load, receiver sensitivity, propagation delay, and input-current figures are not present in the supplied verified data and therefore require confirmation from the manufacturer datasheet. Typical uses include industrial controller links, factory automation equipment, remote sensor networks, data acquisition units, building controls, and embedded serial buses. In a half-duplex design, the direction-control signal determines whether the device transmits or receives; only the selected node should enable its driver to prevent multiple drivers from driving the same bus. Place the transceiver close to the bus connector and provide the decoupling and protection required by the system. A common RS-485 layout uses a low-impedance ground reference alongside A, B, and the differential pair. External protection, termination, biasing, and isolation remain application-specific choices rather than functions confirmed as integrated into the SP485EN-L/TR. This product summary combines the verified distributor, manufacturer, and cross-reference information with practical RS-485 design guidance. It distinguishes documented parameters from missing electrical details, focuses on the genuine 8-pin drop-in alternatives, and helps engineers evaluate supply, speed, temperature, bus topology, and protection requirements before procurement.
SP485R - 1/10 Unit Load RS-485 Transceiver | MaxLinear
The MaxLinear SP485R is a low-power RS-485 differential transceiver offered in an 8-pin narrow SOIC or 8-pin plastic DIP package, designed as a pin-to-pin equivalent to the SP485 with significantly higher receiver input impedance. The part supports half-duplex communication with tri-state control and is intended for applications that require many nodes on a single twisted-pair bus, rated for over 400 transceivers per line due to its high-impedance differential receiver inputs (RIN approximately 120 kOhm to 150 kOhm typical). The SP485R operates from a single 5 V supply, delivers 5 Mbps signaling capability, and includes a low-power shutdown mode, making it suitable for industrial multi-drop networks, building automation, and long-cable installations. An RS-485 transceiver is a physical-layer interface IC that converts between a UART's TTL/CMOS logic levels and the differential voltage signaling required by the TIA/EIA-485 standard. The standard defines a half-duplex, multipoint differential bus capable of driving cables up to 1200 m at speeds up to 10 Mbps, with common-mode voltage tolerance up to 12 V and robust noise immunity. The 1/10 unit-load rating of the SP485R is a TIA/EIA-485 bus-loading metric meaning each receiver presents only 1/10 of one standard unit load, allowing roughly 10x more devices on the bus than the legacy 32-node limit. Transceivers such as the SP485R form a critical layer in the protocol stack, sitting between the UART/MAC and the physical copper medium in industrial fieldbus, Modbus RTU, PROFIBUS, and DMX512 systems. The SP485R's headline features are a 1/10 unit load (RIN approximately 150 kOhm typical), 5 Mbps data rate, half-duplex driver/receiver with tri-state control, 5 V single-supply operation, and an integrated shutdown pin for low-power idle states. Differential driver outputs swing the EIA-485-required 1.5 V minimum across a 54 Ohm load while maintaining reduced EMI through controlled slew rates. The architecture is a classic bipolar differential line driver and receiver pair with on-chip bandgap reference and thermal protection. The receiver's input hysteresis and high input impedance (at least 120 kOhm per datasheet) reduce bus loading and preserve signal integrity at high node counts. Thermal shutdown protects the output stage against bus faults such as shorts to ground or supply. Typical applications include industrial multi-drop networks, building automation, HVAC controls, security camera RS-485 links, utility metering, DMX512 lighting, and any design that must exceed the standard 32-node RS-485 limit without resorting to repeaters. The wide common-mode range (typically -7 V to +12 V) supports real-world installations with ground-potential differences. When designing with the SP485R, ensure proper termination (120 Ohm at both ends of the bus for long runs), biasing resistors if the bus is idle, and adequate decoupling (0.1 uF ceramic close to VCC). Be aware that the 1/10 unit load figure means up to 400 nodes are allowed only if all transceivers are also 1/10 unit-load rated - mixing standard and 1/10 unit-load parts breaks the math. This page synthesizes real distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
SP485REP-L - 1/10 Unit Load RS-485 Transceiver | Exar
Exar Corporation SP485REP-L is a half-duplex RS-485/RS-422 transceiver with a 1/10 unit-load receiver input, a 4.75 V to 5.25 V supply, and an 8-pin plastic DIP package. It supports more than 400 transceivers on one transmission line and provides a typical receiver input impedance of 150 kOhm. Its 60 ns propagation delay and operating-temperature range from -40 C to +85 C make it suitable for industrial multipoint data links. An RS-485 transceiver is an interface IC that combines a differential line driver and differential receiver, allowing equipment to communicate reliably over noisy, long cable runs. The half-duplex arrangement means the driver and receiver share the same differential pair, with direction controlled by the design. As a universal bus transceiver, the SP485REP-L belongs to the interface IC hierarchy: bus transceiver, line transceiver, physical-layer interface, and communication semiconductor. The principal feature is its 1/10 unit-load receiver input. A lower unit load reduces the loading placed on a shared bus, while the specified typical input resistance of 150 kOhm helps preserve driver signal integrity. The result is support for more than 400 transceivers on a single transmission line. Half-duplex operation also reduces wiring complexity by sharing one bus pair rather than requiring separate transmit and receive pairs. The device operates from a regulated 4.75 V to 5.25 V supply and includes a propagation delay of 60 ns, according to the published SP485REP-L specifications. Its 8-pin plastic DIP package is intended for through-hole assembly and prototyping rather than compact automated surface-mount production. The -40 C to +85 C operating range provides useful environmental headroom for industrial control, instrumentation, and communications equipment. Typical uses include RS-485 field buses, industrial sensor networks, building automation equipment, remote monitoring stations, and data-acquisition systems. The high receiver impedance is particularly useful when many nodes share the same two-wire bus. Compared with a 1/8 or 1/4 unit-load transceiver, the 1/10 unit-load rating provides lower bus loading, while the trade-off is that the exact replacement must still match supply voltage, driver and receiver ratings, enable logic, and DIP pin mapping. Designers should verify the manufacturer's pinout and termination requirements before layout, and should use a proper RS-485 line network with controlled stub lengths. The DIP footprint requires through-hole clearances and adequate lead-bend spacing. Because the verified data does not include detailed absolute-maximum ratings, driver output levels, or full timing tables, those values should be obtained from the manufacturer datasheet before final release. This page consolidates the verified 1/10 unit-load, impedance, voltage, delay, temperature, package, pricing-directory, and replacement information with application guidance and package-conscious comparisons. It distinguishes confirmed facts from parameters that still require datasheet confirmation, helping engineers shortlist the SP485REP-L without overlooking PCB or bus-compatibility constraints.
SP490CN-L - 5Mbps RS-485/RS-422 Transceiver | MaxLinear
The MaxLinear SP490CN-L is a low-power BiCMOS differential line transceiver with one driver and one receiver, supporting RS-485 and RS-422 operation up to 5 Mbps in an 8-pin SOIC package. Its key electrical features include ±200 mV receiver input sensitivity, a wide receiver common-mode range, and 5 V supply operation. The SP490 is designed for industrial data links where low-power differential signaling and reliable noise immunity are important. An RS-485/RS-422 transceiver is an interface IC that combines a differential line driver and differential receiver into one package. The driver converts a logic signal into a balanced differential transmission, while the receiver converts the differential pair back into a logic signal. This interface class belongs to the broader hierarchy of interface ICs, communication transceivers, and semiconductor signal-conditioning devices used in industrial control, instrumentation, and point-to-point data systems. The verified manufacturer material identifies the SP490 as a low-power BiCMOS RS-485/RS-422 transceiver capable of operation to 5 Mbps. The receiver sensitivity is specified as ±200 mV, and the family is available in 8-pin plastic DIP and NSOIC packages. The SP491 is a related family member with additional driver and receiver tri-state enable lines, but it is not an interchangeable substitute for every SP490 design because its control-pin arrangement differs. The SP490CN-L is suitable for industrial communication links, data acquisition equipment, instrumentation, and embedded control systems using differential buses. Its 5 V supply simplifies integration with conventional 5 V logic systems, while the differential interface helps reject common-mode noise on longer cable runs. Designers must still account for termination, biasing, grounding, and protection-network requirements in the complete RS-485 or RS-422 interface. For PCB implementation, place the transceiver close to the connector and route the differential pair as a controlled-impedance pair with minimal stub length. Keep the ground reference continuous under the interface, use appropriate surge protection for exposed cabling, and verify that the receiver remains enabled or disabled as required by the bus architecture. The SP490CN-L datasheet is the authoritative source for electrical limits, pin assignments, and package details.
SP490CN-L/TR - 5Mbps RS-485/RS-422 Transceiver | MaxLinear (Tape & Reel)
The MaxLinear SP490CN-L/TR is a low-power BiCMOS differential line transceiver with one driver and one receiver, supporting RS-485 and RS-422 operation up to 5 Mbps in an 8-pin SOIC package. Its key electrical features include ±200 mV receiver input sensitivity, a wide receiver common-mode range, and 5 V supply operation. The SP490 is designed for industrial data links where low-power differential signaling and reliable noise immunity are important. An RS-485/RS-422 transceiver is an interface IC that combines a differential line driver and differential receiver into one package. The driver converts a logic signal into a balanced differential transmission, while the receiver converts the differential pair back into a logic signal. This interface class belongs to the broader hierarchy of interface ICs, communication transceivers, and semiconductor signal-conditioning devices used in industrial control, instrumentation, and point-to-point data systems. The verified manufacturer material identifies the SP490 as a low-power BiCMOS RS-485/RS-422 transceiver capable of operation to 5 Mbps. The receiver sensitivity is specified as ±200 mV, and the family is available in 8-pin plastic DIP and NSOIC packages. The SP491 is a related family member with additional driver and receiver tri-state enable lines, but it is not an interchangeable substitute for every SP490 design because its control-pin arrangement differs. The SP490CN-L/TR is suitable for industrial communication links, data acquisition equipment, instrumentation, and embedded control systems using differential buses. Its 5 V supply simplifies integration with conventional 5 V logic systems, while the differential interface helps reject common-mode noise on longer cable runs. Designers must still account for termination, biasing, grounding, and protection-network requirements in the complete RS-485 or RS-422 interface. For PCB implementation, place the transceiver close to the connector and route the differential pair as a controlled-impedance pair with minimal stub length. Keep the ground reference continuous under the interface, use appropriate surge protection for exposed cabling, and verify that the receiver remains enabled or disabled as required by the bus architecture. The SP490CN-L/TR datasheet is the authoritative source for electrical limits, pin assignments, and package details.
SP490CS-L - 5Mbps RS-485/RS-422 Transceiver | MaxLinear
The MaxLinear SP490CS-L is a low-power, full-duplex differential line-driver and receiver supporting RS-485 and RS-422 data rates up to 5 Mbps, supplied in an 8-pin plastic DIP package. It provides one transmitter and one receiver, operates from a 5 V supply, and has a typical supply current of 0.9 mA. The SP490 family provides ±200 mV receiver input sensitivity across a wide common-mode range, making it useful for robust industrial links where signal amplitude and ground-referred noise must be handled reliably. An RS-485 transceiver is an interface IC that combines a differential line driver and differential receiver for balanced digital communication. The SP490CS-L sits in the transceiver hierarchy alongside RS-422 interface devices, allowing the same physical network device to support both standards while providing noise rejection and differential signaling. Its full-duplex arrangement supports separate transmit and receive paths, and the manufacturer documentation identifies compatibility with commonly referenced LTC490 and SN75179-family interfaces. The main verified features are a 5 Mbps maximum data rate, 5 V supply operation, one-transmitter/one-receiver configuration, full duplex, ±200 mV receiver sensitivity, and low-power BiCMOS implementation. The source material states that the SP490 is available in 8-pin NSOIC packages, while the exact SP490CS-L distributor listing identifies an 8-pin plastic DIP package. The -L ordering suffix and package construction should therefore be checked against the manufacturer’s ordering information before production release. The device is appropriate for industrial automation, instrumentation, factory equipment, building controls, and other balanced serial links where RS-485 or RS-422 operation is required. In an RS-485 network, the differential outputs reduce sensitivity to common-mode noise compared with single-ended signaling, while the receiver threshold supports detection of relatively small differential voltages. The 5 Mbps capability allows the device to handle higher-speed short-distance links than a low-rate transceiver, although cable length, topology, termination, and transceiver count still determine practical network performance. Designers should preserve the differential pair geometry between the transceiver and connector, provide the required supply decoupling close to the device, and apply termination and biasing appropriate to the selected RS-485 or RS-422 topology. The receiver and driver paths are not the same as the SP491: the SP491 adds driver and receiver tri-state enable lines, whereas the SP490 does not. This distinction is important when replacing a part in a design that relies on bus disable or controlled tri-state behavior. This page consolidates verified manufacturer and distributor information, identifies package and interface details, separates sourced replacement evidence from unsupported assumptions, and highlights the design constraints that matter when selecting a 5 Mbps RS-485/RS-422 transceiver. The listed alternatives are limited to candidates supported by the supplied cross-reference evidence and are not intended to imply unreported electrical equivalence.
SP490ECN-L - 10Mbps Full-Duplex RS-485 | MaxLinear
The MaxLinear SP490ECN-L is a low-power differential line driver and receiver implementing a full-duplex RS-485 and RS-422 interface at speeds up to 10Mbps in an 8-pin SOIC package. The device combines one differential driver and one differential receiver, ±200mV receiver input sensitivity, and a wide common-mode range for robust industrial communications. Its specified supply-voltage range is 4.75V to 5.25V. A differential line transceiver is an interface IC that converts logic-level signals into balanced differential transmissions and reconstructs digital data from differential receiver inputs. In the system hierarchy, it is an interface transceiver within RS-485 and RS-422 interface ICs. The full-duplex arrangement supports simultaneous transmission and reception, making it appropriate for point-to-point links where separate differential pairs are available. The SP490E family's principal features include operation up to 10Mbps, ±200mV receiver sensitivity, and operation from a 4.75V to 5.25V supply. The SP490ECN-L commercial-temperature ordering information identifies a 0°C to 70°C operating range. The 8-pin SOIC package supports conventional surface-mount assembly, while the low-power BiCMOS implementation is intended for low-power communications equipment. The receiver threshold and common-mode capability are central to its industrial usefulness. A ±200mV receiver sensitivity permits small differential signals to be recognized reliably, while the wide common-mode range helps the receiver tolerate voltage offsets between connected systems. The manufacturer datasheet also identifies the SP490 as compatible with the related SP491 family and indicates pin compatibility with the LTC490 for the SP490E family, enabling controlled design comparisons. Typical uses include full-duplex industrial RS-485 links, RS-422 point-to-point communications, factory equipment interfaces, data-acquisition equipment, and instrumentation systems. The 10Mbps capability supports higher-rate factory-bus traffic, while full duplex permits simultaneous bidirectional communication when the system provides both transmit and receive differential pairs. The primary design consideration is to maintain the transceiver's supply and bus requirements exactly as specified in the manufacturer datasheet. Layout should keep the driver and receiver connections associated with their intended differential pairs, provide a low-impedance supply path, and provide the bypassing required by the device data sheet. Bus termination, protection, and grounding must be selected for the cable length and environment rather than inferred solely from the 10Mbps headline rate. This page combines manufacturer specifications, distributor availability, verified cross-reference findings, package details, and engineering-oriented selection guidance. It also distinguishes true pin-compatible choices from related SP490E variants and identifies where additional design verification is still required before substitution.
SP490ECN-L/TR - 10Mbps Full-Duplex RS-485 | MaxLinear (Tape & Reel)
The MaxLinear SP490ECN-L/TR is a low-power differential line driver and receiver implementing a full-duplex RS-485 and RS-422 interface at speeds up to 10Mbps in an 8-pin SOIC package. The device combines one differential driver and one differential receiver, ±200mV receiver input sensitivity, and a wide common-mode range for robust industrial communications. Its specified supply-voltage range is 4.75V to 5.25V. A differential line transceiver is an interface IC that converts logic-level signals into balanced differential transmissions and reconstructs digital data from differential receiver inputs. In the system hierarchy, it is an interface transceiver within RS-485 and RS-422 interface ICs. The full-duplex arrangement supports simultaneous transmission and reception, making it appropriate for point-to-point links where separate differential pairs are available. The SP490E family's principal features include operation up to 10Mbps, ±200mV receiver sensitivity, and operation from a 4.75V to 5.25V supply. The SP490ECN-L/TR commercial-temperature ordering information identifies a 0°C to 70°C operating range. The 8-pin SOIC package supports conventional surface-mount assembly, while the low-power BiCMOS implementation is intended for low-power communications equipment. The receiver threshold and common-mode capability are central to its industrial usefulness. A ±200mV receiver sensitivity permits small differential signals to be recognized reliably, while the wide common-mode range helps the receiver tolerate voltage offsets between connected systems. The manufacturer datasheet also identifies the SP490 as compatible with the related SP491 family and indicates pin compatibility with the LTC490 for the SP490E family, enabling controlled design comparisons. Typical uses include full-duplex industrial RS-485 links, RS-422 point-to-point communications, factory equipment interfaces, data-acquisition equipment, and instrumentation systems. The 10Mbps capability supports higher-rate factory-bus traffic, while full duplex permits simultaneous bidirectional communication when the system provides both transmit and receive differential pairs. The primary design consideration is to maintain the transceiver's supply and bus requirements exactly as specified in the manufacturer datasheet. Layout should keep the driver and receiver connections associated with their intended differential pairs, provide a low-impedance supply path, and provide the bypassing required by the device data sheet. Bus termination, protection, and grounding must be selected for the cable length and environment rather than inferred solely from the 10Mbps headline rate. This page combines manufacturer specifications, distributor availability, verified cross-reference findings, package details, and engineering-oriented selection guidance. It also distinguishes true pin-compatible choices from related SP490E variants and identifies where additional design verification is still required before substitution.
SP490ECN/TR - 5Mbps RS-485/RS-422 Transceiver | MaxLinear
The MaxLinear SP490ECN/TR is a 5 Mbps RS-485/RS-422 differential line transceiver with one driver and one receiver, operating from a single 5 V supply in an 8-pin SOIC package. The device combines a differential bus driver and differential receiver with ±200 mV receiver input sensitivity and supports balanced differential signaling over extended cable distances. Its BiCMOS implementation provides low power consumption for industrial communications equipment. An RS-485/RS-422 interface transceiver is a semiconductor product category used to convert logic-level signals into balanced differential transmissions and to recover differential signals from noisy buses. Within the broader hierarchy, the SP490ECN/TR is an interface transceiver, a bus-line transceiver, and a communications interface IC designed for industrial data links. Balanced signaling improves noise immunity by representing each signal as a difference between two conductors rather than as a single-ended voltage. The SP490ECN/TR supports data rates up to 5 Mbps while maintaining the operating characteristics required by RS-422 and RS-485 networks. Its single 5 V supply simplifies interface design, and the ±200 mV receiver sensitivity permits operation with attenuated or electrically noisy differential signals. The one-driver, one-receiver arrangement supports full-duplex point-to-point RS-422 links and multidrop RS-485 applications. The manufacturer datasheet also identifies compatibility with LTC490 and SN75179 devices. The transceiver combines a low-power BiCMOS driver and receiver with differential bus connections. Its receiver converts the difference between the positive and negative bus inputs into a single-ended logic output, while the driver converts a differential logic input into a complementary bus output. The wide receiver common-mode range is specifically identified in the manufacturer datasheet, helping the device tolerate voltage offsets imposed by grounds, cable terminations, and installed equipment on an industrial bus. Typical applications include industrial factory automation, point-to-point telemetry links, building-control networks, RS-422 equipment interfaces, and RS-485 multidrop communications. The 5 Mbps maximum signaling rate supports moderate- and high-speed data transfer, while the 8-pin SOIC format supports compact, surface-mounted assemblies. The same electrical interface can also serve industrial sensors, remote I/O modules, data acquisition equipment, and communication links between controllers and peripheral equipment. Designers should preserve the transceiver's differential signal routing and provide correct bus biasing and termination. Power-supply decoupling should be placed close to the device, while the driver and receiver ground connection should remain compatible with the interface reference plane. Termination is required according to the selected RS-422 or RS-485 topology rather than being applied indiscriminately to every node. Cable length, node spacing, grounding, and common-mode limits must be evaluated together for reliable operation. This product page combines the verified MaxLinear datasheet, distributor availability, pricing evidence, pin information, and package details with practical interface-design guidance. It also distinguishes the SP490ECN/TR from related SP490E and SP490ECN-L/TR variants by data rate while identifying only same-package drop-in alternatives supported by the supplied manufacturer and cross-reference information.
SP490EEN-L - 10Mbps RS-485/RS-422 Transceiver | MaxLinear
The MaxLinear, Inc. SP490EEN-L is a low-power differential RS-485/RS-422 line transceiver rated for operation up to 10 Mbps, with a 4.75 V to 5.25 V supply range and an 8-pin narrow SOIC package. It provides a full-duplex differential bus interface with receiver input sensitivity of ±200 mV and a wide common-mode input range. An RS-485/RS-422 transceiver is an interface IC that converts logic-level signals into balanced differential line signals and receives differential signals back as digital logic. It belongs to the physical-layer hierarchy of communication components: transceiver, line driver and receiver, differential interface, interface IC, and integrated circuit. Balanced signaling improves noise immunity by coupling the intended signal differentially and rejecting common-mode voltage. The SP490EEN-L's principal features include a maximum data rate of 10 Mbps, operation from a 4.75 V to 5.25 V supply, and ±200 mV receiver sensitivity. Its low-power differential architecture is intended for industrial-control links, data-acquisition equipment, factory automation, and other systems that exchange reliable data over longer cable runs than a single-ended interface can support. The device combines a differential driver and differential receiver in one package. Differential transmission reduces sensitivity to ground-potential differences between connected equipment, while the receiver's ±200 mV threshold allows the communications system to tolerate noise and attenuation. The wide common-mode range is especially useful in industrial environments where ground offsets can occur between separately powered nodes. Typical uses include full-duplex industrial networks, programmable-logic-controller communication, motor-control interfaces, building-automation equipment, and instrumentation links. A full-duplex arrangement uses separate differential paths for transmission and reception, allowing the controller and peripheral to exchange information simultaneously without sharing a bus conductor. Designers should use a controlled-impedance PCB layout, terminate the transmission line appropriately at the far end, and provide local supply bypassing close to the IC. The 8-pin SOIC footprint simplifies assembly, but the layout must preserve the relationship between each differential pair and its return path. Cabling, grounding, and termination should be validated together because a compliant transceiver does not compensate for an incorrectly terminated cable. This page consolidates verified manufacturer specifications, distributor pricing, same-package replacement research, application guidance, and practical PCB considerations. It is designed to help engineers identify whether the SP490EEN-L fits a 5 V full-duplex RS-485 or RS-422 design without relying on incomplete distributor summaries alone.
SP490EEN-L/TR - 10Mbps RS-485/RS-422 Transceiver | MaxLinear (Tape & Reel)
The MaxLinear, Inc. SP490EEN-L/TR is a low-power differential RS-485/RS-422 line transceiver rated for operation up to 10 Mbps, with a 4.75 V to 5.25 V supply range and an 8-pin narrow SOIC package. It provides a full-duplex differential bus interface with receiver input sensitivity of ±200 mV and a wide common-mode input range. An RS-485/RS-422 transceiver is an interface IC that converts logic-level signals into balanced differential line signals and receives differential signals back as digital logic. It belongs to the physical-layer hierarchy of communication components: transceiver, line driver and receiver, differential interface, interface IC, and integrated circuit. Balanced signaling improves noise immunity by coupling the intended signal differentially and rejecting common-mode voltage. The SP490EEN-L/TR's principal features include a maximum data rate of 10 Mbps, operation from a 4.75 V to 5.25 V supply, and ±200 mV receiver sensitivity. Its low-power differential architecture is intended for industrial-control links, data-acquisition equipment, factory automation, and other systems that exchange reliable data over longer cable runs than a single-ended interface can support. The device combines a differential driver and differential receiver in one package. Differential transmission reduces sensitivity to ground-potential differences between connected equipment, while the receiver's ±200 mV threshold allows the communications system to tolerate noise and attenuation. The wide common-mode range is especially useful in industrial environments where ground offsets can occur between separately powered nodes. Typical uses include full-duplex industrial networks, programmable-logic-controller communication, motor-control interfaces, building-automation equipment, and instrumentation links. A full-duplex arrangement uses separate differential paths for transmission and reception, allowing the controller and peripheral to exchange information simultaneously without sharing a bus conductor. Designers should use a controlled-impedance PCB layout, terminate the transmission line appropriately at the far end, and provide local supply bypassing close to the IC. The 8-pin SOIC footprint simplifies assembly, but the layout must preserve the relationship between each differential pair and its return path. Cabling, grounding, and termination should be validated together because a compliant transceiver does not compensate for an incorrectly terminated cable. This page consolidates verified manufacturer specifications, distributor pricing, same-package replacement research, application guidance, and practical PCB considerations. It is designed to help engineers identify whether the SP490EEN-L/TR fits a 5 V full-duplex RS-485 or RS-422 design without relying on incomplete distributor summaries alone.
SP490EEP-L - 10Mbps Full-Duplex RS-485/422 | MaxLinear
MaxLinear SP490EEP-L is a 1-transceiver, full-duplex RS-485 and RS-422 interface IC that supports differential data rates up to 10 Mbps and is supplied in an 8-pin plastic DIP package. The device combines one differential line driver and one differential line receiver on the same package, allowing bidirectional point-to-point communication without half-duplex bus-direction control. According to the MaxLinear SP490E/SP491E datasheet, the receiver input sensitivity is ±200 mV over a wide common-mode range. The SP490EEP-L is the SP490E full-duplex configuration; unlike SP491E devices, the SP490E does not provide separate driver and receiver tri-state enable inputs. This distinction makes the SP490EEP-L appropriate for RS-422 links and full-duplex RS-485 point-to-point or multipoint arrangements where the line state is managed by the surrounding system rather than local enable pins. The 8-PDIP format facilitates prototyping, legacy industrial control, and manually assembled systems where a through-hole package is easier to inspect and replace. Its low-power BiCMOS implementation supports low-power communication equipment while retaining the data rate required by industrial links, instrumentation, and embedded serial interfaces. The datasheet material also identifies compatibility with LTC490-class interfaces, but every replacement must be checked for enable behavior, supply requirements, receiver thresholds, and package-specific pin mapping before design release.
SP490EN-L - 5Mbps RS-485/RS-422 Transceiver | MaxLinear
The MaxLinear SP490EN-L is a low-power differential line transceiver supporting RS-485 and RS-422 communication at data rates up to 5 Mbps, with one transmitter and one receiver in an 8-pin narrow SOIC package. It operates from a 5 V supply, provides ±200 mV receiver input sensitivity, and is specified for commercial temperature operation from -40°C to +85°C. An RS-485/RS-422 transceiver is an interface IC that converts single-ended logic signals into differential signals for balanced wired communication and converts received differential signals back into logic-level data. The differential signal path improves noise immunity and allows communication across longer cable runs than ordinary single-ended interfaces. SP490EN-L sits within the interface-IC hierarchy as a bus transceiver for industrial, instrumentation, and data-communication equipment. The SP490EN-L combines one differential driver and one differential receiver in a full-duplex arrangement. Its low-power BiCMOS implementation is intended for 5 V systems and supports data rates up to 5 Mbps. The receiver sensitivity of ±200 mV helps recognize small differential signals, while the wide common-mode range allows useful operation in electrically noisy environments when the board and cabling are designed appropriately. The SP491 is identified by the datasheet as functionally similar but adds driver and receiver tri-state enable lines, so it is not used as a direct substitute here. Typical applications include RS-485 field-bus links, industrial control and test equipment, point-to-point RS-422 links, data acquisition systems, and communication links between separated circuit boards. The full-duplex arrangement is useful where transmit and receive paths must operate independently, although the SP490EN-L does not provide the explicit tri-state enable controls associated with SP491. Cable length and data rate must be selected together because transmission-line losses, termination, stub effects, and common-mode limits can reduce the usable cable distance. For PCB design, keep the differential pair impedance-controlled and route the driver and receiver connections according to the system’s cable and termination strategy. Place termination and protection components close to the transceiver pins, and verify that the selected protection network does not degrade the receiver’s differential sensitivity or data-rate margin. Power-supply bypassing should be placed directly beside the device supply pins. The verified data does not provide exact absolute maximum ratings, propagation-delay limits, receiver common-mode limits, or package dimensions, so those values should be taken from the MaxLinear datasheet before final design release.
SP490EN-L/TR - 5Mbps RS-485/RS-422 Transceiver | MaxLinear (Tape & Reel)
The MaxLinear SP490EN-L/TR is a low-power differential line transceiver supporting RS-485 and RS-422 communication at data rates up to 5 Mbps, with one transmitter and one receiver in an 8-pin narrow SOIC package. It operates from a 5 V supply, provides ±200 mV receiver input sensitivity, and is specified for commercial temperature operation from -40°C to +85°C. An RS-485/RS-422 transceiver is an interface IC that converts single-ended logic signals into differential signals for balanced wired communication and converts received differential signals back into logic-level data. The differential signal path improves noise immunity and allows communication across longer cable runs than ordinary single-ended interfaces. SP490EN-L/TR sits within the interface-IC hierarchy as a bus transceiver for industrial, instrumentation, and data-communication equipment. The SP490EN-L/TR combines one differential driver and one differential receiver in a full-duplex arrangement. Its low-power BiCMOS implementation is intended for 5 V systems and supports data rates up to 5 Mbps. The receiver sensitivity of ±200 mV helps recognize small differential signals, while the wide common-mode range allows useful operation in electrically noisy environments when the board and cabling are designed appropriately. The SP491 is identified by the datasheet as functionally similar but adds driver and receiver tri-state enable lines, so it is not used as a direct substitute here. Typical applications include RS-485 field-bus links, industrial control and test equipment, point-to-point RS-422 links, data acquisition systems, and communication links between separated circuit boards. The full-duplex arrangement is useful where transmit and receive paths must operate independently, although the SP490EN-L/TR does not provide the explicit tri-state enable controls associated with SP491. Cable length and data rate must be selected together because transmission-line losses, termination, stub effects, and common-mode limits can reduce the usable cable distance. For PCB design, keep the differential pair impedance-controlled and route the driver and receiver connections according to the system’s cable and termination strategy. Place termination and protection components close to the transceiver pins, and verify that the selected protection network does not degrade the receiver’s differential sensitivity or data-rate margin. Power-supply bypassing should be placed directly beside the device supply pins. The verified data does not provide exact absolute maximum ratings, propagation-delay limits, receiver common-mode limits, or package dimensions, so those values should be taken from the MaxLinear datasheet before final design release.