MAX3488ESA+T - 10Mbps RS-485/RS-422 Transceiver | Analog Devices
부품 번호: MAX3488ESA+T ✓ 활성MAX3488ESA+T 개요
An RS-485/RS-422 transceiver is an interface integrated circuit that converts logic-level signals into differential bus levels and receives differential bus signals back into logic-level outputs. The MAX3488 belongs to the RS-485 transceiver hierarchy, which also includes half-duplex and full-duplex bus interface devices used in industrial automation, communications equipment, instrumentation, and embedded control systems. RS-422 commonly supports point-to-point links, while RS-485 allows multiple nodes on a shared bus.
Key verified features include a 3V to 3.6V supply range, one transmitter and one receiver, support for both RS-422 and RS-485 protocols, and operation at data rates up to 10Mbps. The slew-rate-limited driver is specifically intended to minimize EMI and reduce reflections caused by improperly terminated cables. An extended variant identified as MAX3488E is listed with ±15kV ESD protection and a 12Mbps maximum data rate, but those extended ratings should not be assumed for the ESA suffix without confirmation from the manufacturer.
The MAX3488 family combines low-power 3.3V operation with a differential bus interface. The verified distributor data identifies MAX3488ESA+ as a full RS-422/RS-485 transceiver in an 8-SOIC package. Different family members provide distinct combinations of operating speed, supply range, and full-duplex versus half-duplex behavior, so an engineer should compare pin functions and electrical limits rather than relying only on the family name when making a drop-in substitution.
Typical applications include industrial RS-485 links, factory automation controllers, building-control equipment, instrumentation gateways, and embedded serial communications modules. In these systems, the transceiver can interface a microcontroller UART to a balanced bus while the slew-rate-limited output helps control edge-rate-induced EMI. Board design must still provide correct bus topology, termination, grounding, and protection appropriate to the installation environment.
A key design consideration is that the MAX3488ESA+T operates from a 3V to 3.6V supply, so its logic levels and interface limits must be compatible with the connected processor. Designers should also distinguish the standard MAX3488 from the MAX3488E extended product because the verified source lists different maximum speeds and ESD protection levels. Tape-and-reel notation identifies the shipping format and should not be treated as a functional difference.
This product page combines verified manufacturer and distributor information, packaging details, source-backed technical facts, drop-in replacement analysis, and practical RS-485 design guidance. It also distinguishes confirmed values from parameters that require confirmation from the complete manufacturer datasheet, helping engineers avoid unsupported assumptions during schematic capture and PCB layout.
드롭인 대체품: MAX3488ESA+T — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: MAX3488ESA+T (동일 폼 팩터 및 풋프린트) — 차이점: Package, Product Type, Supply Voltage, Driver Count, Receiver Count.
MAX3488CSA+T
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
MAX3490EESA+T
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
MAX3485ESA+T
✅ 드롭인 ⚠️ 사양 미검증가격 문의
데이터시트 보기 →MAX3486EESA+T
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
SP485ECN-L
✅ 드롭인가격 문의
데이터시트 보기 →MC3486DR
✅ 드롭인가격 문의
데이터시트 보기 →MAX3488ESA+T 사양
| Product Type | RS-485/RS-422 transceiver |
| Driver Count | 1 driver |
| Receiver Count | 1 receiver |
| Supply Voltage Range | 3 V to 3.6 V |
| Maximum Data Rate | 10 Mbps |
| Supported Protocols | RS-422 and RS-485 |
| Transmitter Output Type | Slew-rate-limited |
| 패키지 | 8-SOIC, 0.154 inch wide and 3.90 mm long |
| 실장 유형 | Surface mount |
| Shipping Format | Tape and reel |
| Production Status | Production |
| Maximum Data Rate of MAX3488E Variant | 12 Mbps |
| ESD Protection of MAX3488E Variant | ±15 kV |
| RoHS 상태 | ROHS3 compliant |
| REACH Status | Unaffected |
| Moisture Sensitivity Level | MSL 1, unlimited floor life |
| List Price Starting From | 2.96 USD |
| LCSC Starting Price | 2.0486 USD |
MAX3488ESA+T 8-soic, 0.154 inch wide and 3.90 mm long 핀 구성 가이드
MAX3488ESA+T(8-soic, 0.154 inch wide and 3.90 mm long 패키지)의 핀 구성입니다. 핀 번호, 기능, 연결 다이어그램은 제조사 데이터시트에 정의되어 있습니다. 정확한 풋프린트와 솔더링 지침은 해당 문서를 참조하십시오.
다음에 대한 상세 핀아웃 데이터 없음: MAX3488ESA+T.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
MAX3488ESA+T 적합 용도: 6 애플리케이션s: Industrial RS-485 Automation Links, Factory Sensor and Controller Networking, Building Control and HVAC Equipment, Instrumentation and Data Acquisition, Embedded Communication Modules, Point-to-Point RS-422 Data Links.
Industrial RS-485 Automation Links
The MAX3488ESA+T suits industrial automation links that require one differential driver and one receiver for balanced RS-485 or RS-422 communication. Its verified 3V to 3.6V operating range integrates directly with 3.3V embedded controllers, while the 10Mbps capability provides substantial data-rate headroom for ordinary factory links. The slew-rate-limited transmitter helps limit EMI and cable reflections, but correct bus topology, grounding, and termination remain essential. Place the transceiver near the board connector, route the differential pair as a controlled impedance pair, and validate it against the cable length, baud rate, node count, and industrial EMC environment.
추천
Factory Sensor and Controller Networking
MAX3488ESA+T can connect a 3.3V controller UART to a balanced sensor or controller network operating under RS-485 or RS-422. The 10Mbps rating supports high-speed local communication, and the slew-rate-limited output reduces edge-rate-related electromagnetic interference compared with an unrestricted high-speed driver. In a multidrop installation, only one driver should be enabled at a time to prevent bus contention. Keep the differential trace short, use a continuous reference plane, place optional termination where physically required, and isolate the interface from high-energy motors or relay circuits.
추천
Building Control and HVAC Equipment
The MAX3488ESA+T is appropriate for 3.3V building-control equipment that uses RS-485 for sensors, actuators, or floor controllers. Its 3V to 3.6V supply range supports compact embedded systems, and the 10Mbps capability is far above many building-control data rates. The slew-rate-limited transmitter reduces EMI that could interfere with sensitive neighboring electronics. Designers should separate the bus connector from switching power stages, provide a low-impedance ground path, apply surge protection according to the installation environment, and verify that the transceiver's logic levels match the building controller.
추천
Instrumentation and Data Acquisition
MAX3488ESA+T can serve as the balanced communications interface in a 3.3V instrumentation or data-acquisition module. One transmitter and one receiver support the protocol connections specified for the MAX3488 family, while the verified 10Mbps rate permits transfer of commands, status, and sampled data. The slew-rate-limited output helps limit EMI in compact laboratory or industrial instrument enclosures. For sensitive measurements, keep the transceiver away from analog inputs, maintain a quiet ground strategy, and review whether galvanic isolation is required when the instrument connects to long or externally referenced cables.
추천
Embedded Communication Modules
The MAX3488ESA+T is useful in compact embedded modules that expose an RS-485 or RS-422 port to a host processor. Its 3.3V operation avoids requiring a 5V transceiver supply, and the 8-SOIC footprint simplifies assembly alongside other surface-mount logic. The verified 10Mbps capability supports high-speed local links, while slew-rate limitation helps control conducted and radiated emissions. The module designer should expose separate enable controls for the driver and receiver where required, define fail-safe bus behavior during reset, and provide connector-level protection if the cable leaves the enclosure.
추천
Point-to-Point RS-422 Data Links
MAX3488ESA+T can be used for point-to-point RS-422 links where a 3.3V transmitter and receiver communicate over a balanced cable. The verified maximum data rate of 10Mbps provides flexibility for short high-speed links, while the slew-rate-limited driver helps reduce reflections and electromagnetic interference. Unlike multidrop RS-485 operation, RS-422 normally uses a dedicated driver per node, so enable timing should be managed carefully during reset. Confirm the exact pin functions and receiver-enable behavior from the manufacturer data sheet before finalizing the schematic or claiming a drop-in replacement.
추천
추천 제품 요약
엔지니어링 참조 데이터: MAX3488ESA+T — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | MAX3488CSA+T | MAX3490EESA+T | MAX3485ESA+T | MAX3486EESA+T | SP485ECN-L | MC3486DR |
|---|---|---|---|---|---|---|---|
| Package | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Exar | Microchip Technology |
주요 차별점
- Verified 3.3V operating range for 3.3V embedded interfaces (vs SP485ECN-L)
- 10Mbps slew-rate-limited operation (vs MC3486DR)
- Single IC supports both RS-422 and RS-485 (vs SP485ECN-L)
설계 노트
Place the MAX3488ESA+T near the RS-485 or RS-422 connector, route the differential pair as a short impedance-controlled pair over a continuous reference plane, and minimize stubs. Keep the driver and receiver return path close to the corresponding differential trace. The verified slew-rate-limited transmitter helps reduce EMI, but it does not replace correct geometry, grounding, termination, or common-mode-control design.
Do not enable multiple RS-485 drivers simultaneously, and define a safe state for the driver-enable pin during reset and brownout. Verify whether the selected operating mode permits concurrent transmit and receive. Also distinguish MAX3488 from MAX3488E: the verified source lists 10Mbps for MAX3488 and 12Mbps plus ±15kV ESD protection for MAX3488E, so those ratings must not be transferred to the standard ESA part without confirmation.
Use the transceiver's slew-rate-limited output as part of an emissions-control strategy, not as a guarantee of regulatory compliance. Keep switching regulators and inductors away from the bus connector and transceiver, use a low-impedance chassis or signal-ground connection, and apply cable-side surge protection when the installation exposes the interface to external transients. Validate the completed board with representative cable lengths and equipment using the applicable EMC test standard.
규정 준수 정보
The supplied alternatives data identifies MAX3488ESA+T as ROHS3 compliant, REACH unaffected, and MSL 1 with unlimited floor life. No verified AEC-Q100, lead-free, halogen-free, or conflict-minerals declaration was supplied.
