MAX1480ACPI+ - Isolated 250kbps RS-485/422 | Maxim
MPN： MAX1480ACPI+ ✓ 啟用中MAX1480ACPI+ 概覽
An RS-485/RS-422 interface transceiver is an interface IC that converts logic-level signals into differential bus signals and receives those differential signals back into logic levels. The MAX1480ACPI+ belongs to the broader isolated interface IC and data-transceiver hierarchy, where electrical isolation separates the logic side from the communications bus. That isolation is useful when the transceiver must withstand ground-potential differences, reduce common-mode coupling, or protect sensitive equipment connected to a noisy industrial bus.
Key features include complete electrically isolated RS-485/RS-422 interfacing, half-duplex operation, a 5 V operating supply, and a 250 kb/s data rate. The MAX1480A family is available in a 28-pin DIP package, making it appropriate for industrial-control, test-equipment, building-control, and isolated network-interface designs where through-hole construction and galvanic separation are important.
The device integrates the driver, receiver, isolation barrier, and associated interface functions into a hybrid microcircuit. A single 5 V supply on the logic side powers both sides of the interface according to the manufacturer description. This integrated approach reduces the number of external isolation components and simplifies the physical implementation of an isolated serial-data port.
Typical uses include automated test equipment, HVAC and building-control networks, industrial-control links, local-area networks, and EMI-sensitive isolated RS-485 or RS-422 interfaces. The 28-pin DIP format is useful where a leaded package is preferred for manual assembly, repair, or compatibility with an existing through-hole board.
Designers should verify the complete pinout, isolation ratings, bus loading, termination, and transient protection against the manufacturer datasheet before laying out a new PCB. Because this is a through-hole DIP device, connector creepage, isolation-barrier placement, and cable-side surge protection require particular attention.
This page combines verified distributor information, manufacturer-family details, same-package alternatives, comparison parameters, and practical design guidance to support component selection beyond a basic distributor listing.
直接替換替代品，適用於 MAX1480ACPI+ — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： MAX1480ACPI+ （相同外形與佔位） — 差異在於 Package, Product Type, Isolation, Construction, Data Rate.
MAX1480BCPI+
✅ 直接替換聯絡詢價
查看資料表 →MAX1480BEPI+
✅ 直接替換聯絡詢價
查看資料表 →MAX1480CCPI+
✅ 直接替換聯絡詢價
查看資料表 →MAX1480AEPI+
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →MAX1480CCPI
✅ 直接替換📋 參考替代品（不在目錄中）
MAX1480ACPI+ 規格
| Product Type | Complete electrically isolated RS-485/RS-422 data transceiver |
| Transceiver Configuration | 1/1 half-duplex transceiver |
| Supported Standards | RS-485 and RS-422 |
| Isolation | Electrically isolated |
| Logic-Side Supply Voltage | 5 V |
| Maximum Data Rate | 250 kb/s |
| 封裝 | 28-pin DIP |
| 安裝類型 | Through-hole |
| Device Family | MAX1480A/B/C |
| Construction | Hybrid microcircuit |
MAX1480ACPI+ 28-pin dip 腳位配置指南
MAX1480ACPI+（28-pin dip 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： MAX1480ACPI+.
請參閱 資料表 以查看完整腳位配置。
典型應用
MAX1480ACPI+ 適用於 6 應用s: Industrial-Control Communication, Automated Test Equipment, HVAC and Building-Control Networks, EMI-Sensitive Data Interface, Isolated Local-Area Network, Isolated Field-Service Interface.
Industrial-Control Communication
The MAX1480ACPI+ fits isolated industrial-control links that require RS-485 or RS-422 signaling at rates up to 250 kb/s. Its electrically isolated interface separates the logic side from the bus side, helping manage ground-potential differences and common-mode coupling in systems with long cables or noisy equipment. The 5 V supply and 28-pin through-hole package also suit legacy control boards that favor DIP construction. Before deployment, verify the manufacturer's isolation rating and temperature grade against the installation environment, and confirm that the 250 kb/s rate remains adequate for the selected bus protocol.
推薦
Automated Test Equipment
The MAX1480ACPI+ can connect automated test equipment to an isolated RS-485 or RS-422 instrumentation bus. A 250 kb/s half-duplex data rate is appropriate for command transfer, status reporting, and configuration traffic where deterministic low-to-moderate-speed serial communication is more important than maximum throughput. Electrical isolation helps protect test-system electronics from ground shifts and common-mode transients encountered across long cable runs. Engineers should verify driver loading, receiver common-mode limits, and isolation withstand ratings from the MAX1480A datasheet before connecting external test fixtures.
推薦
HVAC and Building-Control Networks
The MAX1480ACPI+ is suitable for isolated building-control communication between HVAC controllers, sensors, and supervisory equipment using RS-485 or RS-422. The 250 kb/s maximum data rate provides ample bandwidth for polling and configuration traffic, while the isolation barrier helps isolate equipment distributed across different building ground potentials. The 28-pin DIP format supports leaded board construction and repairability. Final design approval should consider environmental temperature, cable length, bus topology, termination, surge exposure, and whether the manufacturer-supported isolation rating is appropriate for the building installation.
推薦
EMI-Sensitive Data Interface
The MAX1480ACPI+ can be used where an RS-485 or RS-422 port must operate close to noisy motors, relays, switching equipment, or long external cables. Electrical isolation reduces the energy that can propagate between the communications bus and the host logic, while the 250 kb/s rate supports moderate-speed control and monitoring traffic. Designers should still treat isolation as one part of a complete EMC design, maintaining proper grounding, routing the differential pair as a balanced pair, and applying appropriate cable-side transient protection. The manufacturer's recommended layout and isolation details should be followed exactly.
推薦
Isolated Local-Area Network
The MAX1480ACPI+ supports isolated local-area network nodes built around RS-485 or RS-422 physical layers. Its 250 kb/s data rate is suitable for supervisory control, status polling, and configuration rather than high-bandwidth payload transfer. The integrated isolation and transceiver functions can simplify a node design by reducing the number of separate isolation and interface assemblies. When selecting the topology, engineers must account for transceiver loading, termination, fail-safe biasing, cable length, and node count. For network equipment, the verified manufacturer data should also be checked for operating temperature and reinforced or basic isolation requirements.
推薦
Isolated Field-Service Interface
The MAX1480ACPI+ is applicable to field-service equipment that communicates with remote sensors or actuators over an isolated RS-485 or RS-422 link. The half-duplex 250 kb/s interface provides enough bandwidth for configuration, telemetry, and diagnostic traffic while limiting bus bandwidth. Its 28-pin DIP package can be advantageous in rugged, repairable equipment where through-hole mechanical reliability is preferred. The isolation function must be validated against the required withstand voltage, pollution degree, and environmental conditions, and the bus should include suitable protection against surge and ESD events encountered in field installations.
推薦
推薦產品摘要
工程參考資料，適用於 MAX1480ACPI+ — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | MAX1480BCPI+ | MAX1480BEPI+ | MAX1480CCPI+ | MAX1480AEPI+ | MAX1480CCPI |
|---|---|---|---|---|---|---|
| Package | 28-pin DIP | 28-pin DIP | 28-pin DIP | 28-pin DIP | 28-pin DIP | 28-pin DIP |
| Brand | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Interface Type | RS-485/RS-422 | RS-485/RS-422 | RS-485/RS-422 | RS-485/RS-422 | RS-485/RS-422 | RS-485/RS-422 |
| Isolation | Electrically isolated | Electrically isolated | Electrically isolated | Electrically isolated | Electrically isolated | Electrically isolated |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V |
| Implementation | Hybrid microcircuit | Hybrid microcircuit | Hybrid microcircuit | Hybrid microcircuit | Hybrid microcircuit | Hybrid microcircuit |
主要差異化特點
- Identified 250 kb/s operating class (對比MAX1480CCPI+)
- Verified one-half transceiver configuration (對比MAX1480BEPI+)
- Complete isolated RS-485/RS-422 integration (對比SN65HVD06D)
設計說明
Place the MAX1480ACPI+ in accordance with the manufacturer pinout and isolation-layout guidance. Keep logic-side and bus-side return paths distinct where required by the isolation architecture, and route the RS-485 or RS-422 differential pair as a tightly coupled pair. The supplied data confirms a 28-pin DIP but does not provide individual pin names, so the mechanical and electrical layout must be completed from the official MAX1480A datasheet rather than an inferred diagram.
The electrically isolated interface helps separate the logic and bus domains, but it does not replace a complete EMC strategy. Use a balanced cable, maintain recommended differential routing geometry, minimize stubs, and install bus-side transient protection for externally accessible cables. Verify common-mode range, isolation withstand, and ESD performance against the manufacturer data before release because those numerical limits were not included in the supplied search results.
Do not assume that every MAX1480 suffix is an unconditional drop-in replacement. The A, B, C, and E order codes can identify different performance or environmental grades, so compare the exact data rate, temperature range, isolation rating, timing, and supply requirements. Also verify the transceiver direction and half-duplex behavior before substitution; identical 28-pin DIP packaging does not by itself guarantee identical operating behavior.
The verified description states that a single 5 V supply on the logic side powers both sides of the interface. Follow the manufacturer's recommended bypass capacitance, supply sequencing, grounding, and isolation-return requirements without substituting unverified values. Confirm the exact pin assignments from the official datasheet and include adequate local decoupling at the device to limit supply noise coupled into the isolated bus interface.
合規資訊
The supplied verified data does not state RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. AEC-Q100 is not applicable to this industrial interface product because no automotive qualification was identified.
