MAX1480BEPI+ - 250kbps Isolated RS-485/RS-422 | Maxim
部品番号: MAX1480BEPI+ ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $25.5783 | $25.58 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
MAX1480BEPI+ 概要
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.
ドロップイン代替品: MAX1480BEPI+ — 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: MAX1480BEPI+ （同一形状・フットプリント） — 相違点: Data Rate, Operating Temperature, Package.
クイック比較ツール — 並列比較する代替部品を選択:
MAX1480BCPI+
✅ ドロップイン✓ 在庫あり
$24.1 / 個
データシートを見る →MAX1480CEPI+
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MAX1480CCPI+
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MAX1480AEPI+
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MAX1480BEPI
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MAX1480BEPI+ 仕様
| Product Type | Complete electrically isolated RS-485/RS-422 data interface |
| Transceiver Configuration | 1 driver / 1 receiver |
| Duplex Mode | Half-duplex |
| Supported Protocols | RS-422 and RS-485 |
| データレート | 250 kb/s |
| Isolation | Electrically isolated |
| Driver Slew Rate | Reduced-slew-rate driver |
| Receiver Hysteresis | 70 mV |
| Supply Architecture | Single +5 V supply on logic side powers both sides |
| パッケージ | 28-pin PDIP |
| パッケージ / ケース | 28-DIP (0.600 inch, 15.24 mm) |
| 実装タイプ | Through-hole |
| 動作温度 | 0 °C to +70 °C |
| Application Category | Automated test equipment |
| Application Category | HVAC and building-control networks |
| Application Category | Industrial-control local-area networks |
| Application Category | EMI-sensitive isolated data interfaces |
MAX1480BEPI+ 28-dip (0.600 inch, 15.24 mm) ピン配置ガイド
MAX1480BEPI+ (28-dip (0.600 inch, 15.24 mm) パッケージ) のピン配置。 ピン番号、機能、接続図はメーカーのデータシートで定義されています。正確なフットプリントとはんだ付けのガイドラインについては、データシートを参照してください。
詳細なピン配置データはありません: MAX1480BEPI+.
詳細は データシート をご参照ください。
主な用途
MAX1480BEPI+ の用途: 7 件s: Automated Test Equipment, HVAC and Building-Control Networks, Industrial-Control Local Area Networks, HVAC and Building-Control Remote Sensors, EMI-Sensitive Isolated Data Links, Local Area Network Gateways, Isolated RS-485/RS-422 Test and Measurement.
Automated Test Equipment
MAX1480BEPI+ fits isolated RS-485 or RS-422 links between test-system controllers and remote fixtures where ground-potential differences and cable noise are concerns. Its electrically isolated 1-driver/1-receiver interface supports half-duplex communication at up to 250 kb/s, while the MAX1480B reduced-slew-rate driver is intended to minimize EMI and reflections. Keep the cable-side network compact near the connector and verify the complete PDIP pinout, isolation limits, and bus termination in the manufacturer datasheet.
おすすめ
HVAC and Building-Control Networks
MAX1480BEPI+ is suitable for isolated building-control networks carrying supervisory data between controllers, sensors, actuators, and supervisory systems. The 250 kb/s rate is appropriate for many HVAC and facility-control message rates, while electrical isolation helps prevent ground-current problems between separately powered equipment. The half-duplex RS-485 arrangement requires bus-direction control, symmetrical differential routing, and protection appropriate to the building cable environment.
おすすめ
Industrial-Control Local Area Networks
Use MAX1480BEPI+ when an industrial controller must communicate over an isolated RS-485 or RS-422 segment and the bus can operate at 250 kb/s or less. Its integrated 1/1 transceiver reduces the number of separate bus-driver and receiver blocks, and the reduced-slew-rate MAX1480B driver helps control edge-rate-related EMI. Design the network around the actual cable length, node count, grounding method, termination, and fault-recovery requirements rather than treating isolation as a substitute for surge protection.
おすすめ
HVAC and Building-Control Remote Sensors
MAX1480BEPI+ can connect a controller to remote temperature, pressure, airflow, or equipment-status nodes through an isolated differential bus. The 250 kb/s maximum data rate is more than adequate for typical supervisory sensor traffic, while the receiver's identified 70 mV hysteresis helps reject small noise excursions around logic thresholds. Because the sensor network may span long cables and multiple buildings, verify common-mode limits, isolation voltage, and cable-side grounding against the installation specification.
おすすめ
EMI-Sensitive Isolated Data Links
MAX1480BEPI+ is appropriate when an RS-485 or RS-422 connection must cross an isolation boundary in an electrically noisy installation. The MAX1480B reduced-slew-rate driver is specifically described as minimizing EMI and reducing reflections, which can improve system behavior when combined with careful board and cable design. Keep the isolated bus section away from switching power nodes and high-current return paths, and use the manufacturer's recommended isolation and termination arrangement.
おすすめ
Local Area Network Gateways
MAX1480BEPI+ can serve as the isolated field-side interface in a gateway that translates between a local controller and a longer RS-485 or RS-422 backbone. Its half-duplex operation is suitable for request/response fieldbus traffic at up to 250 kb/s, and the integrated receiver/driver simplifies the physical-layer implementation. The gateway must manage transmit-enable timing, avoid simultaneous drive conflicts, and validate each node's isolation and grounding arrangement.
おすすめ
Isolated RS-485/RS-422 Test and Measurement
MAX1480BEPI+ is useful in test and measurement equipment that needs a robust differential interface to an external instrument or remote fixture. Electrical isolation helps separate the instrument's logic ground from the external bus, while the 250 kb/s data rate supports common control and status traffic. The reduced-slew-rate driver should be paired with a controlled differential layout, verified terminations, and appropriately rated external protection for the laboratory or industrial environment.
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: MAX1480BEPI+ — 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 | MAX1480BCPI+ | MAX1480CEPI+ | MAX1480CCPI+ | MAX1480AEPI+ | MAX1480BEPI |
|---|---|---|---|---|---|---|
| Brand | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Package | 28-pin PDIP | 28-pin PDIP | 28-pin PDIP | 28-pin PDIP | 28-pin PDIP | 28-pin PDIP |
| Supported Protocols | RS-422 and RS-485 | RS-422 and RS-485 | RS-422 and RS-485 | RS-422 and RS-485 | RS-422 and RS-485 | RS-422 and RS-485 |
主な差別化要因
- Integrated isolated 1/1 half-duplex interface （vs MAX1480BCPI+)
- Reduced-slew-rate driver positioning （vs MAX1480CEPI+)
- Verified 250 kb/s operating rate （vs MAX1480CCPI+)
- 28-pin PDIP package reuse （vs MAX1480AEPI+)
- Active product-page support （vs MAX1480BEPI)
設計ノート
Route the RS-485/RS-422 differential pair as a short, symmetrical pair from the transceiver to the connector, avoiding split returns, long stubs, and proximity to switching nodes. The MAX1480B reduced-slew-rate driver helps with EMI control, but layout still determines whether that benefit reaches the installed system. Keep the cable-side ground and isolation components in the protected network area, and use the manufacturer's recommended pin connections and termination arrangement.
Do not treat electrical isolation as a complete surge-protection solution. The verified data establishes an isolated RS-485/RS-422 interface and a 250 kb/s rate, but it does not establish the target part's complete surge, ESD, fault-current, or absolute-maximum ratings. Confirm those limits in the manufacturer datasheet, then select TVS, fusing, termination, and common-mode-choke components for the actual cable length and installation environment.
The verified family information states that a single +5 V supply on the logic side powers both sides of the interface, but the target's exact supply current, isolated-side supply arrangement, decoupling requirements, and undervoltage behavior are not supplied. Follow the manufacturer datasheet for capacitor values, supply sequencing, and isolation-side power requirements. Validate the logic-side voltage at the transceiver pins during startup and ensure the controller's transmit-enable timing cannot leave the bus driver active during receive operation.
コンプライアンス情報
The supplied verified results do not provide a definitive compliance declaration for MAX1480BEPI+. AEC-Q100 is treated as not_applicable because no automotive qualification claim appears in the supplied data; this is not an automotive qualification statement.
