SP490ES-L - 5Mbps Full-Duplex RS-485/RS-422 | MaxLinear
部品番号: SP490ES-L ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
SP490ES-L 概要
An RS-485/RS-422 transceiver is an interface IC that converts logic-level digital signals into differential electrical signals for reliable communication over longer cable distances. RS-422 supports point-to-point, full-duplex differential signaling, while RS-485 supports multipoint buses and commonly uses half-duplex arrangements. The SP490 family supports both standards and is positioned for industrial-control, instrumentation, data-acquisition, and embedded communications systems.
Key features include one driver and one receiver, operation up to 5Mbps, a 5V supply requirement, ±200mV receiver sensitivity, and a wide receiver common-mode range. The differential signal path improves noise immunity by comparing the voltage difference between two conductors rather than relying on a single-ended voltage referenced only to ground. The full-duplex architecture supports separate transmit and receive paths.
The SP490ES-L is identified in distributor data as a 1/1 full-duplex transceiver in an 8-PDIP package. Its 8-pin DIP format is useful for through-hole industrial and legacy-style assemblies where a surface-mount package is not desired. The SP490 family is also offered in 8-pin NSOIC packages according to the manufacturer product page, but the SP490ES-L ordering code specifically corresponds to the 8-pin plastic DIP package.
Typical applications include RS-485 field buses, factory automation equipment, motor-control systems, building controls, industrial sensors, data loggers, and embedded serial interfaces. Design attention should be paid to termination, biasing, cable length, grounding, and the relationship between data rate and transmission distance. Differential routing should be kept balanced and separated from noisy switching nodes.
This page combines verified manufacturer and distributor information with practical design guidance for engineers evaluating the SP490ES-L. It also distinguishes the verified 5V, 5Mbps, ±200mV sensitivity, full-duplex, and 8-DIP characteristics from specifications that require confirmation from the complete manufacturer datasheet before release to production.
ドロップイン代替品: SP490ES-L — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: SP490ES-L （同一形状・フットプリント） — 相違点: Mounting Type, Package, Product Type, Supported Standards.
クイック比較ツール — 並列比較する代替部品を選択:
SP490ES
✅ ドロップイン📋 参考代替品（カタログ未掲載）
SP490
✅ ドロップイン📋 参考代替品（カタログ未掲載）
SP491
✅ ドロップイン📋 参考代替品（カタログ未掲載）
SN75176BD
✅ ドロップイン✓ 在庫あり
$0.1501 / 個
データシートを見る →MAX490EPA
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MAX490CPA+
✅ ドロップイン📋 参考代替品（カタログ未掲載）
SP490ES-L 仕様
| Product Type | Full-duplex differential line transceiver |
| Supported Standards | RS-485 and RS-422 |
| Number of Drivers | 1 |
| Number of Receivers | 1 |
| Maximum Signaling Rate | 5 Mbps |
| 電源電圧 | 5 V |
| Receiver Input Sensitivity | ±200 mV |
| Receiver Common-Mode Range | Wide common-mode range |
| Architecture | Full duplex |
| Driver/Receiver Organization | 1 driver and 1 receiver |
| パッケージ | 8-pin plastic DIP |
| Package Designation | 8-PDIP |
| Package Lead Pitch | 7.62 mm |
| 実装タイプ | Through-hole |
| Packaging | Tube |
SP490ES-L ピン構成
| ピン 1 | [DATA_NEEDED: pin 1 name] — [DATA_NEEDED: pin 1 function] |
| ピン 2 | [DATA_NEEDED: pin 2 name] — [DATA_NEEDED: pin 2 function] |
| ピン 3 | [DATA_NEEDED: pin 3 name] — [DATA_NEEDED: pin 3 function] |
| ピン 4 | [DATA_NEEDED: pin 4 name] — [DATA_NEEDED: pin 4 function] |
| ピン 5 | [DATA_NEEDED: pin 5 name] — [DATA_NEEDED: pin 5 function] |
| ピン 6 | [DATA_NEEDED: pin 6 name] — [DATA_NEEDED: pin 6 function] |
| ピン 7 | [DATA_NEEDED: pin 7 name] — [DATA_NEEDED: pin 7 function] |
| ピン 8 | [DATA_NEEDED: pin 8 name] — [DATA_NEEDED: pin 8 function] |
主な用途
SP490ES-L の用途: 7 件s: Industrial RS-485 Field Bus, Factory Automation Controller, Industrial Sensor Interface, Building Control Network, Data Acquisition Equipment, Embedded RS-422 Communication, Remote Monitoring Terminal.
Industrial RS-485 Field Bus
The SP490ES-L fits industrial field-bus interfaces that need a low-power, 5Mbps-capable differential transceiver for a 5V system. Its one-driver, one-receiver organization supports full-duplex point-to-point arrangements, while the ±200mV receiver sensitivity helps detect small differential signals after cable attenuation and common-mode disturbance. Use the device with properly controlled bus termination, balanced routing, and a common reference appropriate to the installation.
おすすめ
Factory Automation Controller
The SP490ES-L can connect a factory automation controller to external sensors, drives, or remote I/O when the link requires a robust differential interface. The verified 5Mbps maximum signaling rate supports moderate-speed control and status traffic, while the wide receiver common-mode range is useful in industrial environments with ground-potential differences. Board placement should separate the transceiver from motors, switching supplies, and high-current return paths.
おすすめ
Industrial Sensor Interface
The SP490ES-L is appropriate for remote sensor links where a small differential receiver signal must be detected in the presence of industrial noise. The ±200mV sensitivity specification gives the receiver a defined input threshold, and the 5Mbps capability allows the link to carry sensor updates and control information without an extremely slow serial rate. Use twisted-pair cabling, controlled grounding, and input protection suited to the installation environment.
おすすめ
Building Control Network
The SP490ES-L can support low- and medium-speed building-control nodes that communicate over differential RS-485 or RS-422 wiring. Its full-duplex organization allows separate transmit and receive paths, which can simplify four-wire point-to-point links or dual-channel equipment. Because building installations can contain long cables and ground offsets, verify common-mode limits, protection, termination, and fault behavior in the final installation design.
おすすめ
Data Acquisition Equipment
The SP490ES-L can serve as the communication interface in data-acquisition equipment that must move commands or measurements over a robust differential link. The 5V supply requirement is straightforward for many embedded systems, and the 5Mbps rate supports data bursts while remaining below the device's stated maximum. Firmware and hardware should still handle baud-rate accuracy, bus idle states, termination, and fault recovery.
おすすめ
Embedded RS-422 Communication
The SP490ES-L is suited to embedded RS-422 point-to-point links where separate differential transmit and receive conductors are preferred. Its 8-pin through-hole DIP package is useful when the surrounding board or legacy enclosure uses DIP-compatible footprints, and the receiver sensitivity specification supports detection of attenuated differential signals. Verify exact logic levels, timing, supply tolerances, and temperature limits from the full manufacturer data before releasing the design.
おすすめ
Remote Monitoring Terminal
The SP490ES-L can be used in remote monitoring terminals that exchange status and control data with a central controller over differential wiring. The full-duplex architecture can reduce protocol contention in dedicated transmit and receive channels, while the low-power transceiver role is compatible with space-constrained embedded systems. For long cables, use surge protection, twisted pair, chassis grounding, and a verified common-mode strategy.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: SP490ES-L — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | SP490ES | SP490 | SP491 | SN75176BD | MAX490EPA | MAX490CPA+ |
|---|---|---|---|---|---|---|---|
| Product Type | Full-duplex differential line transceiver | SP490 family transceiver | Low-power differential line driver/receiver | SP490 family transceiver with tri-state enables | RS-485 interface transceiver candidate | RS-422/RS-485 transceiver candidate | RS-422/RS-485 transceiver candidate |
| Package | 8-PDIP | 8-pin plastic DIP | 8-pin plastic DIP or 8-pin NSOIC family options | 8-pin package family option | 8-pin DIP package | DIP-8 | DIP-8 |
主な差別化要因
- Verified 5Mbps full-duplex operation （vs SP491)
- 8-pin plastic DIP package （vs MAX490EPA)
- Receiver sensitivity of ±200mV （vs MAX490CPA+)
設計ノート
Route the differential pair as a controlled, balanced pair and keep the driver, receiver, protection components, and connector interface in the same signal path. Avoid discontinuities, excessive stubs, and asymmetrical copper lengths. Because the SP490ES-L supports rates up to 5Mbps, use the complete manufacturer timing and layout guidance and validate the finished board with the intended cable and baud rate.
Do not assume that any RS-485 transceiver with a similar function is a drop-in replacement. The supplied comparison data specifically warns that MAX490EPA may have different parameters or circuit structure, while SP491 adds enable lines. Confirm the package pin mapping, receiver thresholds, driver output characteristics, supply tolerance, and enable logic before substituting a part into an existing PCB.
Place the transceiver close to the cable connector and place protection, termination, and filtering components at the board edge where transient energy first enters the enclosure. Keep switching-regulator loops and motor-power return currents away from the differential pair. Provide a stable ground and bypass network around the transceiver according to the complete manufacturer datasheet.
コンプライアンス情報
The supplied verified snippets do not provide explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals statements. Compliance fields remain unknown rather than inferred.
