SP485ES-L 5Mbps RS-485 Transceiver | MaxLinear | 8-PDIP
MPN: SP485ES-L ✓ פעילSP485ES-L סקירה
An RS-485 transceiver is an interface IC that converts logic-level data into a differential, balanced signal and converts received differential signals back into digital logic. The broader hierarchy is transceiver > serial interface > differential line interface > interface IC. RS-485 is commonly used for robust multidrop communication, while the SP485ES-L also supports RS-422 signaling as described by the manufacturer.
Key features include a maximum data rate of 5000 kbps, a half-duplex 1/1 transceiver configuration, and an operating temperature range from -40 C to +85 C. The BiCMOS implementation combines bipolar and CMOS characteristics to support low-power operation. Because the device is half duplex, its driver and receiver share the bus connection and are controlled separately through DE and RE logic inputs.
The SP485ES-L provides separate driver input, driver enable, receiver enable, and receiver output functions. This arrangement allows a design to disable the transmitter during reception, supporting bus turnaround in two-wire RS-485 networks. The exact differential input thresholds, output levels, supply current, driver impedance, receiver impedance, and protection ratings are not supplied in the retrieved source excerpts and therefore must be confirmed in the manufacturer datasheet before final circuit design.
Typical uses include industrial RS-485 field buses, factory automation equipment, building automation controllers, data acquisition systems, motor-control interfaces, and embedded serial networks. The 5000 kbps capability makes the part suitable for relatively high-speed point-to-point or multidrop links where cable length, topology, termination, and transceiver slew rate remain compatible.
Design with the SP485ES-L using a local 5 V supply only after checking the complete electrical limits in the datasheet. Place the transceiver close to the bus connector, provide the protection required by the installation environment, and apply termination and fail-safe biasing according to the selected bus topology. ESD and surge protection may require external components because the retrieved data does not establish the integrated protection rating.
This page consolidates the verified package, speed, interface, temperature, sourcing, and cross-reference information with practical selection guidance. It also distinguishes the SP485ES-L from candidate drop-in devices and identifies electrical details that still require datasheet confirmation, providing more engineering context than a distributor listing alone.
חלופות תחליף ישיר עבור SP485ES-L — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם SP485ES-L (אותו גורם צורה וטביעת רגל) — שונים ב Package, RoHS Status, Mounting Type, Data Rate, Number of Drivers/Receivers.
SP485REP-L
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←MAX485EUA
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
MAX485EEPA
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
MAX485ESA+
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←MAX485CUA+
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←SP485ES-L מפרטים
| Product Type | RS-485/RS-422 half-duplex transceiver |
| Transceiver Configuration | 1/1 transceiver |
| Number of Drivers | 1 driver |
| Number of Receivers | 1 receiver |
| Duplex Mode | Half duplex |
| Supported Standards | RS-485 and RS-422 |
| Maximum Data Rate | 5000 kbps |
| Logic Technology | BiCMOS |
| טווח טמפרטורת פעולה | -40 C to +85 C |
| מארז | 8-PDIP |
| מספר פינים | 8 pins |
| סוג הרכבה | Through-hole |
| סטטוס RoHS | unknown |
| REACH Status | unknown |
| AEC-Q100 Status | not_applicable |
תצורת פינים של SP485ES-L
| פין 1 | RO — Receiver output |
| פין 2 | RE — Receiver enable, active low |
| פין 3 | DE — Driver enable, active high |
| פין 4 | DI — Driver data input |
| פין 5 | GND — Ground |
| פין 6 | A — Non-inverting bus terminal |
| פין 7 | B — Inverting bus terminal |
| פין 8 | VCC — Positive supply |
יישומים טיפוסיים
SP485ES-L מתאים עבור 6 יישוםs: Industrial RS-485 Field Bus, Building Automation Controller, Data Acquisition Instrument, Motor and Motion Control, Embedded Serial Network Gateway, Telecom and Remote Sensor Link.
Industrial RS-485 Field Bus
The SP485ES-L fits industrial field-bus nodes that require a half-duplex differential interface at rates up to 5000 kbps. Its one-driver/one-receiver arrangement supports shared two-wire buses, while the verified -40 C to +85 C temperature range covers many factory environments. The device is placed between a controller UART and the bus transceiver pins, with DE and RE logic controls coordinating transmission and reception. Compared with a single-ended UART, the differential interface improves noise immunity over industrial cable runs. The design must still account for cable propagation delay, reflections, termination, common-mode voltage, and grounding, because the 5000 kbps capability does not guarantee a particular useful cable length.
מומלץ
Building Automation Controller
The SP485ES-L is suitable for building-automation controllers that connect sensors, actuators, or gateways through RS-485. Its half-duplex architecture reduces the number of physical bus connections, and the verified 5000 kbps capability supports faster data exchange than many low-speed field devices. A controller UART connects to DI and RO, while firmware manages DE and RE around each transaction. The 8-PDIP package is particularly convenient for through-hole industrial controller boards. Installation engineers should add surge and ESD protection according to the building wiring environment and follow termination or biasing requirements for the selected bus topology.
מומלץ
Data Acquisition Instrument
The SP485ES-L can connect laboratory and industrial data-acquisition instruments to a controller over a differential RS-485 link. Its 1/1 driver and receiver configuration supports bidirectional half-duplex communication, while a verified rate of up to 5000 kbps can reduce transfer time when the acquisition system generates substantial data. Place the transceiver near the external connector to minimize unprotected trace exposure, and use controlled impedance routing for the differential pair. Input filtering, grounding, and isolated power may be needed when sensors sit far from the instrument or when common-mode voltage exceeds the device's verified operating range.
מומלץ
Motor and Motion Control
The SP485ES-L can serve as the communications transceiver between a motion controller and distributed drives, position sensors, or I/O modules. Differential RS-485 signaling is useful in motor environments because it rejects common-mode noise better than a single-ended serial link. The SP485ES-L's verified 5000 kbps rate provides ample bandwidth for command and status traffic, while the -40 C to +85 C range suits many industrial enclosures. Care is required around motor cables because switching noise and transients can exceed normal logic levels. External protection, chassis grounding, and appropriate cable separation should be designed alongside the bus rather than added only after failures occur.
מומלץ
Embedded Serial Network Gateway
The SP485ES-L is appropriate for embedded gateways that translate between a host processor and an RS-485 field network. Its half-duplex configuration saves interface pins, and the 8-PDIP package supports prototype or legacy through-hole PCB layouts. A gateway can use the verified 5000 kbps capability for high-throughput polling or a lower rate for longer, noisier cable runs. Firmware must assert and release DE promptly to avoid blocking the shared bus, and the receiver enable policy should prevent unwanted echoes during transmission. Firmware timing, bus direction control, and protocol turnaround must be evaluated together because a high transceiver rate does not compensate for incorrect bus management.
מומלץ
Telecom and Remote Sensor Link
The SP485ES-L can interface remote sensors, remote units, or monitoring modules over an RS-485 or RS-422 connection. Its differential bus architecture supports communication over distances and in electrically noisy environments where single-ended UART links are less reliable. The verified 5000 kbps capability allows relatively rapid updates, but the practical rate should be reduced when long cable, high node count, capacitive loading, or unequal clocking increases margin requirements. Use twisted-pair wiring, controlled bus termination, and a defined common-mode strategy. The 8-PDIP package also permits socketed implementation on serviceable remote-interface boards.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור SP485ES-L — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | SP485REP-L | MAX485EUA | MAX485EEPA | MAX485ESA | MAX485CUA |
|---|---|---|---|---|---|---|
| Brand | MaxLinear | MaxLinear | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 8-PDIP | 8-PDIP - same | 8-PDIP - same | 8-PDIP - same | 8-PDIP - same | 8-PDIP - same |
| Transceiver Configuration | 1/1 half-duplex transceiver | 1/1 half-duplex transceiver | 1/1 half-duplex transceiver | 1/1 half-duplex transceiver | 1/1 half-duplex transceiver | 1/1 half-duplex transceiver |
| Supported Interfaces | RS-485 and RS-422 | RS-485 | RS-485 | RS-485 | RS-485 | RS-485 |
מבדילים עיקריים
- Verified high-speed operation for the SP485ES-L (לעומתMAX485CUA)
- Broad verified industrial temperature range (לעומתMAX485ESA)
- Higher-impedance receiver option for dense buses (לעומתSP485ES-L)
הערות תכנון
Route DI, RO, DE, and RE as short traces from the logic controller, and route the A/B differential pair as a tightly coupled pair on the same PCB layer. Keep the transceiver close to the external connector so transient pickup and ESD exposure are minimized before protection devices. Confirm the 8-PDIP row spacing and lead dimensions against the selected manufacturer drawing rather than relying only on the DIP designation.
Do not substitute a transceiver solely because it is described as an RS-485 device. Verify DE and RE polarity, receiver-output logic, bus-terminal mapping, supply range, common-mode limits, fail-safe behavior, and the exact 8-PDIP footprint. The verified SP485ES-L rating is 5000 kbps; choosing a lower-speed MAX485-family alternative can terminate a link that appears electrically similar but does not meet the original timing requirement.
For RS-485 cabling, use twisted-pair wiring and apply termination only where dictated by the physical topology. Bias or fail-safe circuitry may be needed to prevent a floating bus from producing invalid receiver states. Locate protection and filtering close to the connector, and use a common chassis or surge-ground strategy appropriate to the installation. The retrieved sources do not specify the SP485ES-L's integrated surge rating, so external protection requirements remain design-specific.
At 5000 kbps, the usable cable distance is limited by propagation delay, reflections, connector and transceiver delay, and the accumulated loading of connected nodes. Reduce the baud rate when cable length, node count, or capacitive loading is high. Establish DE and receiver-enable timing from the complete transceiver datasheet so that the driver releases the bus before the receiver changes state and no node transmits over another node.
מידע על תאימות
The supplied search results do not explicitly state RoHS, REACH, lead-free, halogen-free, conflict-minerals, or AEC-Q100 qualification for SP485ES-L. These items require confirmation from current MaxLinear product documentation.
