LMS485 - National Semiconductor

LMS485 5V Low Power RS-485 / RS-422 Differential Bus

The LMS485 is a low power differential bus/line transceiver designed for high speed bidirectional data communication on multipoint bus transmission lines. It is designed for balanced transmission lines. It meets ANSI Standards TIA/EIA RS422-B, TIA/EIA RS485-A and ITU recommendation and V.11 and X.27. The LMS485 combines a TRI-STATE™ differential line driver .

Features

n n n n n n n n n n n Meet ANSI standard RS-485-A and RS-422-B Data rate 2.5 Mbps Single supply voltage operation, 5V Thermal shutdown protection Short circuit protection Low power BiCMOS Allows up to 32 transceivers on the bus Open circuit fail-safe for receiver Extended operating temperature range −40˚C to 85˚C Drop-in replacement to MAX485 Available in 8-pin SOIC and 8-Pin DIP package Applications n n n n n n n n Low power RS-485 systems Network hubs, bridges, and routers Point of sales equipment (ATM, barcode scanners,…) Local area networks (LAN) Integrated service digital network (ISDN) .