Product Details
●The ADM488 and ADM489 are low power differential line transceiver suitable for communication on multipoint bus transmission 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 kohms, allowing 32 transceivers to be connected on the bus.
●The ADM488/ADM489 operates from a single +5 V ± 10% power supply. Excessive power dissipation caused by bus contention or by output shorting is prevented by a thermal shutdown circuit. This feature forces the driver output into a high impedance state if during fault conditions a significant temperature increase is detected in the internal driver circuitry.
●The receiver contains a fail-safe feature that results in a logic high output state if the inputs are unconnected (floating). The ADM488/ADM489 is fabricated on BiCMOS, an advanced mixed technology process combining low power CMOS with fast switching bipolar technology.
●The ADM488/ADM489 is fully specified over the industrial temperature range and is available in DIP, SOIC and TSSOP packages.
●### Features and Benefits
● Meets EIA RS-485 Standard
● 250 kbps Data Rate
● Single 5 V ± 10% Supply
● –7 V to +12 V Bus Common-Mode Range
● 12 kO 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 µA Supply Current
