GENERAL DESCRIPTION

The ADM488 and ADM489 are low power, differential line transceivers suitable for communication on multipoint bus transmission lines. They are intended for balanced data transmission and comply with both Electronics Industries Association (EIA) RS-485 and RS-422 standards. Both products contain 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.

FEATURES

Meets EIA RS-485 and RS-422 standards

250 kbps data rate

Single 5 V ± 10 supply

−7 V to +12 V bus common-mode range

12 kΩ 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

APPLICATIONS

Low power RS-485 and RS-422 systems

DTE-DCE interface

Packet switching

Local area networks

Data concentration

Data multiplexers

Integrated services digital network (ISDN)