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MAX483EESA 的PDF资料 下载 ,133K

MAX483EESA 的货源和报价 MAX483EESA 的相关技术信息

相关型号

MAX481CSA MAX481ESA MAX483 MAX483CPA MAX483EPA MAX485 MAX485CPA MAX485CPA+

概述

The MAX481E, MAX483E, MAX485E, MAX487E- MAX491E, and MAX1487E are low-power transceivers for RS-485 and RS-422 communications in harsh environments. Each driver output and receiver input is protected against ±15kV electro-static discharge (ESD) shocks, without latchup. These parts contain one driver and one receiver. The MAX483E, MAX487E, MAX488E, and MAX489E feature reduced slew-rate drivers that minimize EMI and reduce reflections caused by improperly terminated cables, thus allowing error-free data transmission up to 250kbps. The driver slew rates of the MAX481E, MAX485E, MAX490E, MAX491E, and MAX1487E are not limited, allowing them to transmit up to 2.5Mbps.

These transceivers draw as little as 120µA supply current when unloaded or when fully loaded with disabled drivers (see Selector Guide). Additionally, the MAX481E, MAX483E, and MAX487E have a low-current shutdown mode in which they consume only 0.5µA. All parts operate from a single +5V supply.

Drivers are short-circuit current limited, and are protected against excessive power dissipation by thermal shutdown circuitry that places their outputs into a high-impedance state. The receiver input has a fail-safe feature that guarantees a logic-high output if the input is open circuit.

The MAX487E and MAX1487E feature quarter-unit-load receiver input impedance, allowing up to 128 transceivers on the bus. The MAX488E-MAX491E are designed for full-duplex communications, while the MAX481E, MAX483E, MAX485E, MAX487E, and MAX1487E are designed for half-duplex applications. For applications that are not ESD sensitive see the pinand function-compatible MAX481, MAX483, MAX485, MAX487-MAX491, and MAX1487.

关键特性		应用
For Fault-Tolerant Applications: MAX3430: ±80V Fault-Protected, Fail-Safe, 1/4- Unit Load, +3.3V, RS-485 Transceiver MAX3080-MAX3089: Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited, RS-485/RS-422 Transceivers For Space-Constrained Applications: MAX3460-MAX3464: +5V, Fail-Safe, 20Mbps, Profibus, RS-485/RS-422 Transceivers MAX3362: +3.3V, High-Speed, RS-485/RS-422 Transceiver in a SOT23 Package MAX3280E-MAX3284E: ±15kV ESD-Protected, 52Mbps, +3V to +5.5V, SOT23, RS-485/RS-422 True Fail-Safe Receivers MAX3030E-MAX3033E: ±15kV ESD-Protected, +3.3V, Quad RS-422 Transmitters For Multiple Transceiver Applications: MAX3293/MAX3294/MAX3295: 20Mbps, +3.3V, SOT23, RS-485/RS-422 Transmitters For Fail-Safe Applications: MAX3440E-MAX3444E: ±15kV ESD-Protected, ±60V Fault-Protected, 10Mbps, Fail-Safe RS-485/J1708 Transceivers For Low-Voltage Applications: MAX3483E/MAX3485E/MAX3486E/MAX3488E/ MAX3490E/MAX3491E: +3.3V Powered, ±15kV ESD-Protected, 12Mbps, Slew-Rate-Limited, True RS-485/RS-422 Transceivers		工业控制局域网 电平转换器 低功耗RS-422收发器 低功耗RS-485收发器 用于EMI敏感应用的收发器

应用笔记

App Note 367: Explanation of Maxim RS-485 Features - MAX481E, MAX483E, MAX485E, MAX487E (English only) App Note 639: Maxim Leads the Way in ESD Protection - MAX483E, MAX485E, MAX487E, MAX491E (English only) App Note 651: ESD Protection for I/O Ports - MAX483E, MAX485E, MAX487E, MAX491E (English only) App Note 2116: RS-485 Data Interface Gives Isolated, Full-Duplex Operation - MAX483E, MAX485E (English only)

注释

MAX485 plus 1µA shutdown mode (MAX481E) Slew-rate limiting reduces EMI and reflections (MAX483E) Direct LTC485 replacement (MAX485E) MAX483 plus 1/4-unit load (MAX487E) Slew-rate limiting reduces EMI and reflections (MAX488E) MAX488 plus driver/receiver enable (MAX489E) Direct LTC490 replacement (MAX490E) Direct LTC491 replacement (MAX491E)