概述 (MAX485ESA.html">MAX485ESA 低功耗收发器) | ||||
这些收发器在驱动器禁用的空载或满载状态下,吸取的电源电流在120ΜA至500ΜA之间。另外,MAX481、MAX483与MAX487具有低电流关断模式,仅消耗0.1ΜA。所有器件都工作在5V单电源下。 驱动器具有短路电流限制,并可以通过热关断电路将驱动器输出置为高阻状态,防止过度的功率损耗。接收器输入具有失效保护特性,当输入开路时,可以确保逻辑高电平输出。 MAX487与MAX1487具有1/4单位负载的接收器输入阻抗,使得总线上最多可以有128个MAX487/MAX1487收发器。使用MAX488-MAX491可以实现全双工通信,而MAX481、MAX483、MAX485、MAX487与MAX1487则为半双工应用设计。 |
关键特性 | 应用 | |||||||||||||||||||||||
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Key Specifications: RS-422/485 Line Driver/Receivers | ||||||||||||||||
PART Number | Number of Tx/Rx | Duplex | Typ. ICC (mA) | Data Rate (kbps) | Tx EN | Rx EN | Typ. Shutdown ICC (ΜA) | Number of Rx/Tx on Bus | Rx Failsafe with Inputs: | Features | Supply Voltage (V) | Slew Rate Limited | Package | Operating Temp. Range (°C) | RoHS Available | Price |
MAX1487 | 1Tx + 1Rx | Half | 0.3 | 2,500 | Yes | Yes | - | 128 | Open | - | 5 | No | MAX1487#PDIP" target=_blank>8/PDIP MAX1487#SOIC" target=_blank>8/SOIC MAX1487#uMAX" target=_blank>8/uMAX |
-40 to +85 -55 to +125 0 to +70 | Yes | $1.25 @ 1k |
MAX481 | Half | 0.5 | 2,500 | Yes | Yes | 0.1 | 32 |
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MAX481#PDIP" target=_blank>8/PDIP MAX481#SOIC" target=_blank>8/SOIC MAX481#uMAX" target=_blank>8/uMAX |
$1.25 @ 1k | ||||||
MAX483 | Half | 0.35 | 250 | Yes | Yes | 0.1 | 32 |
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MAX483#PDIP" target=_blank>8/PDIP MAX483#SOIC" target=_blank>8/SOIC MAX483#uMAX" target=_blank>8/uMAX |
$1.50 @ 1k | ||||||
MAX485 | Half | 0.5 | 2,500 | Yes | Yes | - | 32 | - | MAX485#PDIP" target=_blank>8/PDIP MAX485#SOIC" target=_blank>8/SOIC MAX485#uMAX" target=_blank>8/uMAX |
$1.25 @ 1k | ||||||
MAX487 | Half | 0.25 | 250 | Yes | Yes | 0.1 | 128 |
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MAX487#PDIP" target=_blank>8/PDIP MAX487#SOIC" target=_blank>8/SOIC MAX487#uMAX" target=_blank>8/uMAX |
$1.25 @ 1k | ||||||
MAX488 | Full | 0.12 | 250 | No | No | - | 32 | - | MAX488#PDIP" target=_blank>8/PDIP MAX488#SOIC" target=_blank>8/SOIC MAX488#uMAX" target=_blank>8/uMAX |
$1.25 @ 1k | ||||||
MAX489 | Full | 0.12 | 250 | Yes | Yes | - | 32 | - | MAX489#PDIP" target=_blank>14/PDIP MAX489#SOIC" target=_blank>14/SOIC |
$1.25 @ 1k | ||||||
MAX490 | Full | 0.3 | 2,500 | No | No | - | 32 | - | MAX490#PDIP" target=_blank>8/PDIP MAX490#SOIC" target=_blank>8/SOIC MAX490#uMAX" target=_blank>8/uMAX |
$1.25 @ 1k | ||||||
MAX491 | Full | 0.3 | 2,500 | Yes | Yes | - | 32 | - | MAX491#PDIP" target=_blank>14/PDIP MAX491#SOIC" target=_blank>14/SOIC |
$1.25 @ 1k |
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