755cda9bcfb81c4b05c39d303b084296

Микросхема SN75ALS1178NSR, Приемопередатчик RS485, 2 драйвера …

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Характеристики

SN75ALS1178NSR, Приемопередатчик RS485, 2 драйвера …The SN75ALS1178NSR is a dual Differential Driver and Receiver integrated circuits designed for bidirectional data communication on multipoint bus transmission lines. It is designed for balanced transmission lines and meets standards TIA/EIA-422-B and TIA/EIA-485-A. It combines dual 3-state differential line drivers and dual 3-state differential input line receivers, both of which operate from a single 5V power supply. The driver and receiver has active-high and active-low enables, respectively, which can be externally connected together to function as direction control. The driver each has an individual active-high enable. Failsafe design ensures that when the receiver inputs are open, the receiver outputs are always high.

• Driver positive-and negative-current limiting
• Thermal shutdown protection
• Driver 3-state outputs active-high enable
• Designed for multi-point bus transmission on long bus lines in noisy environments
• 50mA Maximum low supply-current
• -7 to 12V Driver common-mode output voltage range
• ±200mV Receiver input sensitivity
• 50mV Typical receiver hysteresis
• 12kR Minimum receiver high input impedance
• Green product and no Sb/Br