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MAX485CSA-T 的货源和报价 MAX485CSA-T 的相关技术信息

相关型号

MAX485CPA+ MAX485CSA MAX485CSA+ MAX485CSA+T MAX485E MAX485EPA MAX485EPA+ MAX485ESA

Description

The MAX481, MAX483, MAX485, MAX487-MAX491, and MAX1487 are low-power transceivers for RS-485 and RS- 422 communication. Each part contains one driver and one receiver. The MAX483, MAX487, MAX488, and MAX489 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 MAX481, MAX485, MAX490, MAX491, and MAX1487 are not limited, allowing them to transmit up to 2.5Mbps. These transceivers draw between 120µA and 500µA of supply current when unloaded or fully loaded with disabled drivers. Additionally, the MAX481, MAX483, and MAX487 have a low-current shutdown mode in which they consume only 0.1µA. 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 the driver 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 MAX487 and MAX1487 feature quarter-unit-load receiver input impedance, allowing up to 128 MAX487/ MAX1487 transceivers on the bus. Full-duplex communications are obtained using the MAX488-MAX491, while the MAX481, MAX483, MAX485, MAX487, and MAX1487 are designed for half-duplex applications.

Key Features		Applications
For Fault-Tolerant Applications MAX3430: ±80V Fault-Protected, Fail-Safe, 1/4 Unit Load, +3.3V, RS-485 Transceiver MAX3440E-MAX3444E: ±15kV ESD-Protected, ±60V Fault-Protected, 10Mbps, Fail-Safe, RS-485/J1708 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 MAX3293/MAX3294/MAX3295: 20Mbps, +3.3V, SOT23, RS-855/RS-422 Transmitters For Multiple Transceiver Applications MAX3030E-MAX3033E: ±15kV ESD-Protected, +3.3V, Quad RS-422 Transmitters For Fail-Safe Applications MAX3080-MAX3089: Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited RS-485/RS-422 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		Industrial-Control Local Area Networks Level Translators Low-Power RS-422 Transceivers Low-Power RS-485 Transceivers Transceivers for EMI-Sensitive Applications

Application Notes

App Note 367: Explanation of Maxim RS-485 Features - MAX1487, MAX481, MAX485, MAX489 App Note 723: Selecting and Using RS-232, RS-422, and RS-485 Serial Data Standards - MAX485 App Note 2116: RS-485 Data Interface Gives Isolated, Full-Duplex Operation - MAX483, MAX485

Notes and Comments

MAX485 plus 1µA shutdown mode (MAX481) Slew-rate limiting reduces EMI and reflections (MAX483) Direct LTC485 replacement (MAX485) MAX483 plus 1/4-unit load (MAX487) Slew-rate limiting reduces EMI and reflections (MAX488) MAX488 plus driver/receiver enable (MAX489) Direct LTC490 replacement (MAX490) Direct LTC491 replacement (MAX491)