Specifications

RS-422/485 Application Note 37
 Copyright B&B Electronics -- Revised October 1997
B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350
PH [phone] -- FAX [phone]
Chapter 7: Sources of Further Information
EIA Standards and Publications can be purchased from:
GLOBAL ENGINEERING DOCUMENTS
7730 Carondelet Avenue -- Clayton, MO 63105
Phone: [phone] -- FAX: [phone]
GLOBAL ENGINEERING DOCUMENTS
15 Inverness Way East -- Englewood, CO 80112
Phone: [phone] -- FAX: [phone]
Global Engineering Documents web site can be found at http://global.ihs.com.
Related data interface standards are:
a) EIA-232-E Interface between data terminal equipment and date circuit-
terminating equipment employing serial binary data
interchange (ANSI/IEA-232-D)
b) EIA-422-A Electrical characteristics of balanced voltage digital interface
circuits
c) EIA-423-A Electrical characteristics of unbalanced voltage digital
interface circuits
d) EIA-485 Standard for electrical characteristics of generators and
receivers for use in balanced digital multipoint systems
e) EIA-449 General purpose 37-position and 9-position interface for data
terminal equipment and data circuit-terminating equipment.
f) EIA-530 High speed 25-position interface for data terminal equipment
and data circuit-terminating equipment
g) EIA/TIA-562 Electrical characteristics for an unbalanced digital interface
Manufacturers of integrated circuit data transceivers often offer practical
application information for RS-422 and RS-485 systems.
National Semiconductor’s Interface Data Book includes a number of excellent
applications notes. These notes are also available online at
http://www.national.com/. A search engine is provided to search the text of the
available application notes. Entering “422” or “485” as search criteria to get a
current list of related application notes.