1205:
234:
253:
RS-423 specifies the electrical characteristics of a single unbalanced signal. The standard was written to be referenced by other standards that specify the complete DTE/DCE interface for applications which require a unbalanced voltage circuit to transmit data.
245:
standard, both of which use the same overall signaling system, but differ in that RS-422 has a dedicated return line for every data pin, while RS-423 uses a single return line. Use of a common ground is one weakness of RS-423 (and
177:, with a single, unidirectional sending driver, and allowing for up to 10 receivers. It is normally implemented in integrated circuit technology and can also be employed for the interchange of serial binary signals between
250:): if devices are far enough apart or on separate power systems, the ground will degrade between them and communications will fail, resulting in a condition that is difficult to trace.
162:, which used the same signaling systems but on a different wiring arrangement: RS-423 differed primarily in that it had a single return pin instead of one for each data pin.
389:"V.10 : Electrical characteristics for unbalanced double-current interchange circuits operating at data signalling rates nominally up to 100 kbit/s"
645:
1173:
802:
665:
472:
375:
194:
853:
524:
1200:
Interfaces are listed by their speed in the (roughly) ascending order, so the interface at the end of each section should be the fastest.
213:
specify the electrical characteristics of the unbalanced voltage digital interface circuit. RS-423 provides for data transmission, using
906:
745:
675:
182:
735:
833:
151:
that specifies electrical characteristics of a digital signaling circuit. Although it was originally intended as a successor to
625:
306:
148:
1177:
828:
797:
290:
775:
1101:
1040:
895:
559:
700:
465:
425:
National
Semiconductor Application Note AN-1031 "TIA/EIA-422-B Overview", January 2000, National Semiconductor Inc.
388:
755:
158:
RS-423 systems can transmit data on cables as long as 1,200 meters (3,900 ft). It is closely related to
1208:
1183:
1075:
730:
450:
413:
TIA/EIA STANDARD, Electrical
Characteristics of Unbalanced Voltage Digital Interface Circuits, TIA/EIA-423-B
178:
257:
These other standards would define protocols, connectors, pin assignments and functions. Standards such as
1232:
765:
222:
218:
170:
1227:
1029:
982:
838:
610:
458:
326:
294:
1025:
878:
760:
937:
492:
481:
214:
166:
927:
549:
485:
371:
199:
ANSI/TIA/EIA-423-B Electrical
Characteristics of Unbalanced Voltage Digital Interface Circuits
660:
790:
640:
620:
495:
210:
445:
1091:
785:
710:
635:
539:
514:
270:
1221:
1163:
1050:
942:
890:
873:
655:
554:
544:
519:
286:
440:
900:
843:
695:
600:
424:
1168:
1147:
1070:
1065:
910:
848:
823:
750:
534:
529:
1021:
720:
509:
1045:
1035:
1002:
997:
932:
807:
595:
580:
575:
282:
233:
1055:
992:
725:
585:
321:
316:
1188:
1142:
1126:
952:
770:
715:
650:
605:
266:
258:
152:
17:
1121:
1012:
987:
977:
967:
962:
780:
670:
630:
590:
311:
247:
242:
225:
or non-terminated transmission lines, point to point, or multi-drop.
174:
159:
1106:
1017:
1116:
1007:
947:
885:
858:
740:
690:
615:
262:
232:
1111:
1096:
957:
868:
863:
705:
427:
page 2 - evaluate the combination of cable length and data rate.
454:
1060:
685:
680:
346:
155:
offering greater cable lengths, it is not widely used.
366:
Buchanan W.J. (2004) RS-422, RS-423 and RS-485. In:
1156:
1135:
1084:
920:
816:
568:
502:
130:
122:
114:
106:
98:
90:
82:
74:
66:
58:
50:
45:
37:
32:
368:The Handbook of Data Communications and Networks.
297:connector. This was sometimes called "DEC-423".
803:Coherent Accelerator Processor Interface (CAPI)
466:
221:signals, with unidirectional/non-reversible,
8:
147:, is a technical standard originated by the
237:Guidelines for data rate versus line length
473:
459:
451:
273:connector) use RS-423 electrical signals.
29:
193:RS-423 is the common short form title of
446:Diagram of pin connections for BBC micro
338:
195:American National Standards Institute
7:
285:computer uses RS-423 with a 5-pin
25:
241:RS-423 is closely related to the
201:and its international equivalent
27:Standard for serial communication
1204:
1203:
70:10 (1 driver & 10 receivers)
203:ITU-T Recommendation T-REC-V.10
307:Electronic Industries Alliance
149:Electronic Industries Alliance
1:
798:Intel Ultra Path Interconnect
62:Point-to-point, Multi-dropped
776:Intel QuickPath Interconnect
766:Direct Media Interface (DMI)
78:1200 meters (4000 feet)
293:used it extensively with a
1249:
761:Compute Express Link (CXL)
1197:
998:IEEE-1284 (parallel port)
913:logical device interface)
86:Single-ended (unbalanced)
173:) interface, similar to
560:List of bus bandwidths
238:
54:Group of copper cables
370:Springer, Boston, MA.
327:List of network buses
295:Modified Modular Jack
236:
1003:IEEE-1394 (FireWire)
741:PCI Extended (PCI-X)
441:RS-423 specification
165:RS-423 specifies an
102:-6V to +6V (maximum)
46:Protocol information
844:Parallel ATA (PATA)
751:PCI Express (PCIe)
239:
209:. These technical
1215:
1214:
1201:
928:Apple Desktop Bus
905:PCI Express (via
864:Serial ATA (SATA)
550:Network on a chip
376:978-1-4757-1067-0
138:
137:
123:Available signals
91:Maximum baud rate
83:Mode of operation
16:(Redirected from
1240:
1207:
1206:
1199:
661:HP Precision Bus
475:
468:
461:
452:
428:
422:
416:
410:
404:
403:
401:
399:
385:
379:
364:
358:
357:
355:
354:
343:
205:, also known as
197:(ANSI) standard
143:, also known as
75:Maximum distance
59:Network topology
30:
21:
1248:
1247:
1243:
1242:
1241:
1239:
1238:
1237:
1218:
1217:
1216:
1211:
1202:
1193:
1152:
1131:
1080:
993:IEEE-488 (GPIB)
916:
812:
791:Infinity Fabric
621:Europe Card Bus
564:
498:
479:
437:
435:Further reading
432:
431:
423:
419:
411:
407:
397:
395:
387:
386:
382:
365:
361:
352:
350:
345:
344:
340:
335:
303:
279:
265:connector) and
231:
229:Characteristics
191:
131:Connector types
94:Up to 100kbit/s
67:Maximum devices
28:
23:
22:
15:
12:
11:
5:
1246:
1244:
1236:
1235:
1230:
1220:
1219:
1213:
1212:
1198:
1195:
1194:
1192:
1191:
1186:
1181:
1171:
1166:
1160:
1158:
1154:
1153:
1151:
1150:
1145:
1139:
1137:
1133:
1132:
1130:
1129:
1124:
1119:
1114:
1109:
1104:
1102:Intel HD Audio
1099:
1094:
1092:ADAT Lightpipe
1088:
1086:
1082:
1081:
1079:
1078:
1073:
1068:
1063:
1058:
1053:
1048:
1043:
1038:
1033:
1015:
1010:
1005:
1000:
995:
990:
985:
980:
975:
970:
965:
960:
955:
950:
945:
940:
935:
930:
924:
922:
918:
917:
915:
914:
903:
898:
893:
888:
883:
882:
881:
876:
866:
861:
856:
851:
846:
841:
836:
831:
826:
820:
818:
814:
813:
811:
810:
805:
800:
795:
794:
793:
786:HyperTransport
783:
778:
773:
768:
763:
758:
753:
748:
743:
738:
733:
728:
723:
718:
713:
708:
703:
698:
693:
688:
683:
678:
673:
668:
663:
658:
653:
648:
643:
638:
633:
628:
623:
618:
613:
608:
603:
598:
593:
588:
583:
578:
572:
570:
566:
565:
563:
562:
557:
552:
547:
542:
540:Bus contention
537:
532:
527:
522:
517:
515:Front-side bus
512:
506:
504:
500:
499:
496:computer buses
480:
478:
477:
470:
463:
455:
449:
448:
443:
436:
433:
430:
429:
417:
405:
380:
359:
337:
336:
334:
331:
330:
329:
324:
319:
314:
309:
302:
299:
278:
275:
230:
227:
190:
189:Standard scope
187:
136:
135:
132:
128:
127:
124:
120:
119:
116:
112:
111:
108:
104:
103:
100:
96:
95:
92:
88:
87:
84:
80:
79:
76:
72:
71:
68:
64:
63:
60:
56:
55:
52:
51:Physical media
48:
47:
43:
42:
39:
35:
34:
26:
24:
14:
13:
10:
9:
6:
4:
3:
2:
1245:
1234:
1233:EIA standards
1231:
1229:
1226:
1225:
1223:
1210:
1196:
1190:
1187:
1185:
1182:
1179:
1175:
1172:
1170:
1167:
1165:
1164:Multidrop bus
1162:
1161:
1159:
1155:
1149:
1146:
1144:
1141:
1140:
1138:
1134:
1128:
1125:
1123:
1120:
1118:
1115:
1113:
1110:
1108:
1105:
1103:
1100:
1098:
1095:
1093:
1090:
1089:
1087:
1083:
1077:
1074:
1072:
1071:External PCIe
1069:
1067:
1064:
1062:
1059:
1057:
1054:
1052:
1051:Parallel SCSI
1049:
1047:
1044:
1042:
1039:
1037:
1034:
1031:
1027:
1023:
1019:
1016:
1014:
1011:
1009:
1006:
1004:
1001:
999:
996:
994:
991:
989:
986:
984:
981:
979:
976:
974:
971:
969:
966:
964:
961:
959:
956:
954:
951:
949:
946:
944:
943:Commodore bus
941:
939:
936:
934:
931:
929:
926:
925:
923:
919:
912:
908:
904:
902:
899:
897:
894:
892:
891:Fibre Channel
889:
887:
884:
880:
877:
875:
872:
871:
870:
867:
865:
862:
860:
857:
855:
852:
850:
847:
845:
842:
840:
837:
835:
832:
830:
827:
825:
822:
821:
819:
815:
809:
806:
804:
801:
799:
796:
792:
789:
788:
787:
784:
782:
779:
777:
774:
772:
769:
767:
764:
762:
759:
757:
754:
752:
749:
747:
744:
742:
739:
737:
734:
732:
729:
727:
724:
722:
719:
717:
714:
712:
709:
707:
704:
702:
699:
697:
694:
692:
689:
687:
684:
682:
679:
677:
674:
672:
669:
667:
664:
662:
659:
657:
654:
652:
649:
647:
644:
642:
639:
637:
634:
632:
629:
627:
624:
622:
619:
617:
614:
612:
609:
607:
604:
602:
599:
597:
594:
592:
589:
587:
584:
582:
579:
577:
574:
573:
571:
567:
561:
558:
556:
555:Plug and play
553:
551:
548:
546:
545:Bus mastering
543:
541:
538:
536:
533:
531:
528:
526:
523:
521:
520:Back-side bus
518:
516:
513:
511:
508:
507:
505:
501:
497:
494:
490:
488:
483:
476:
471:
469:
464:
462:
457:
456:
453:
447:
444:
442:
439:
438:
434:
426:
421:
418:
414:
409:
406:
394:
390:
384:
381:
377:
373:
369:
363:
360:
348:
342:
339:
332:
328:
325:
323:
320:
318:
315:
313:
310:
308:
305:
304:
300:
298:
296:
292:
288:
287:DIN connector
284:
276:
274:
272:
268:
264:
260:
255:
251:
249:
244:
235:
228:
226:
224:
220:
216:
212:
208:
204:
200:
196:
188:
186:
184:
180:
176:
172:
168:
163:
161:
156:
154:
150:
146:
142:
134:Not specified
133:
129:
125:
121:
117:
113:
109:
105:
101:
97:
93:
89:
85:
81:
77:
73:
69:
65:
61:
57:
53:
49:
44:
40:
36:
31:
19:
1228:Serial buses
972:
696:TURBOchannel
486:
420:
412:
408:
396:. Retrieved
392:
383:
367:
362:
351:. Retrieved
349:. foldoc.org
341:
280:
277:Applications
256:
252:
240:
219:single-ended
206:
202:
198:
192:
171:single-ended
164:
157:
144:
140:
139:
1169:CoreConnect
1148:ExpressCard
1076:Thunderbolt
1066:Camera Link
849:Bus and Tag
535:Address bus
530:Control bus
525:Daisy chain
145:TIA/EIA-423
126:Tx, Rx, GND
1222:Categories
1022:ACCESS.bus
921:Peripheral
721:InfiniBand
716:HP GSC bus
510:System bus
415:, May 1993
353:2021-07-08
333:References
223:terminated
215:unbalanced
167:unbalanced
118:+4V to +6V
110:-4V to -6V
41:EIA RS-423
983:Lightning
933:Atari SIO
808:SpaceWire
641:Zorro III
581:S-100 bus
576:SS-50 bus
569:Standards
489:standards
482:Technical
347:"EIA-423"
283:BBC Micro
211:standards
1209:Category
1184:Wishbone
1157:Embedded
1136:Portable
1056:Profibus
988:DMX512-A
874:Parallel
726:Ethernet
636:Zorro II
586:Multibus
487:de facto
378:page 627
322:Fieldbus
317:Profibus
301:See also
115:Space(0)
38:Standard
1189:SLIMbus
1143:PC Card
1127:TOSLINK
817:Storage
771:RapidIO
651:FASTBUS
606:STD Bus
503:General
393:itu.int
267:EIA-449
259:EIA-530
153:RS-232C
107:Mark(1)
99:Voltage
18:EIA-423
1122:S/PDIF
1013:1-Wire
978:RS-485
973:RS-423
968:RS-422
963:RS-232
824:ST-506
781:NVLink
631:STEbus
591:Unibus
374:
312:RS-485
248:RS-232
243:RS-422
181:&
175:RS-232
160:RS-422
141:RS-423
1117:McASP
1085:Audio
1030:SMBus
1026:PMBus
1008:UNI/O
948:HP-IL
901:SATAe
886:ESCON
859:HIPPI
691:NuBus
646:CAMAC
616:Q-Bus
611:SMBus
596:VAXBI
493:wired
398:3 May
271:DC-37
263:DB-25
33:RS423
1174:AMBA
1112:MADI
1097:AES3
958:MIDI
911:NVMe
907:AHCI
869:SCSI
854:DSSI
829:ESDI
706:SBus
666:EISA
601:MBus
491:for
484:and
400:2023
372:ISBN
281:The
207:X.26
1178:AXI
1107:I²S
1061:USB
1046:D²B
1041:SPI
1036:I3C
1018:I²C
953:HIL
938:DCB
909:or
896:SSA
879:SAS
839:SMD
834:IPI
756:AGP
746:PXI
736:PCI
731:UPA
711:VLB
701:MCA
686:VPX
681:VXS
676:VXI
671:VME
656:LPC
626:ISA
291:DEC
217:or
183:DCE
179:DTE
1224::
1028:,
1024:,
391:.
289:.
185:.
1180:)
1176:(
1032:)
1020:(
474:e
467:t
460:v
402:.
356:.
269:(
261:(
169:(
20:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
