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The ADM488 and ADM489 are low power differential line transceiver suitable for communication on multipoint bus trans- mission lines.
They are intended for balanced data transmission and comply with both EIA Standards RS-485 and RS-422. Both products contains a single differential line driver and a single differential line receiver making them suitable for full duplex data transfer.
The ADM489 contains an additional receiver and driver enable control.
The input impedance is 12 kΩ, allowing 32 transceivers to be connected on the bus.
Meets EIA RS-485 Standard 250 kbps Data Rate Single +5 V 6 10% Supply 7 V to +12 V Bus Common-Mode Range 12 kV Input Impedance 2 kV EFT Protection Meets IEC1000-4-4 High EM Immunity Meets IEC1000-4-3 Reduced Slew Rate for Low EM Interference Short Circuit Protection Excellent Noise Immunity 30 mA Supply Current
ADM488 Typical Application
Low Power RS-485 Systems DTE-DCE Interface Packet Switching Local Area Networks Data Concentration Data Multiplexers Integrated Services Digital Network (ISDN)