Patton Electronics 222N Series
Interface Powered, RS-232 to RS-422 Converters
 (Transmit & Receive Data Only)

Patton Part # Black Box Part # Description
222N9F IC473A-F  Async 232 <-> 422 Converter 
222N9FRJ45 IC631A~F  RS232-RS422 CONV, DB9F TO RJ45 
222NM IC470A-M  Async 232 <-> 422 Converter 
222NF IC470A-F  Async 232 <-> 422 Converter 
222NM-25F IC471A-M  Async 232 <-> 422 Converter 
222NF-25M IC472A-F  Async 232 <-> 422 Converter 
222N9M IC473A-M  Async 232 <-> 422 Converter 
222NRC45 IC475C  Async 232 <-> 422 Card 
222NF-25F IC471A-F  Async 232 <-> 422 Converter 
222N9FRJ11 IC630A~F  RS232 -422 CONV, DB9F TO RJ11 
222NM-25M IC472A-M  Async 232 <-> 422 Converter 
222N9M RJ45 IC631A~M  RS232 TO 422 CONV,DB9M,RJ45 
222N9M RJ11 IC630A~M  RS232 TO 422 CONV,DB9M,RJ11 
222NRC11 IC474C  Async 232 <-> 422 Card 
Patton Electronics Model 222N Series
Interface Powered, RS-232 to RS-422 Converters
 (Transmit & Receive Data Only)
These Miniature Converters are no Bigger than a DB-25 (or DB-9) Backshell!
Model 222N
  Features & Benefits
  • Conforms to the EIA RS-422 Interface Standard
  • Bi-Directional Data Conversion
  • No AC Power Required
  • Handshake Lines are Looped Back
  • Reliable Surface Mount Construction
  • 600W of Optional Surge Protection

The Patton Model 222N Series of converters now comes in two ?flavors?: The Model 222N allows an RS-232 device with DB-25 port to connect to an RS-422 device up to 4000 feet away over two twisted pair. The Model 222N9 does the same thing for an RS-232 device with a DB-9 port (now called EIA-574). Both converters support data rates up to 19.2 kbps, and require no AC power or batteries for operation. All handshaking lines are looped back. The Model 222NRC is a dual rack card version of the Model 222N, with two converters in one card!


Product Highlights

DB-9 (EIA-574) Versions Also Available

If you need to convert a DB-9 Serial port to RS-422, you need the Patton Model 222N9

Model 222Ndb9

Note: Model # 222N9FT (shown above) comes with thumbscrews. Other 222N models come with slotted captive fasteners.



Data Format: Asynchronous
Data Rate: 0 to 19,200 bps (no strapping)
Control Signals: CTS turns ON immediately after the terminal raises RTS; DSR and DCD turn ON immediately after the terminal raises DTR
Transmit Mode: Full duplex, 4-wire
Transmit Level: 0 dBm
Connectors: Model 222N - Male or female DB-25 (RS-232 side); Male or Female DB-25, RJ-11 jack, RJ-45 jack or terminal posts (RS-422 side). Model 222N9 - Male or female DB-9 (EIA-574 side); RJ-11 jack, RJ-45 jack or terminal posts (RS-422 side).
Power Supply: None required; uses ultra low power from EIA data and control signals
Dimensions: Model 222N - 2.20" x 1.75" x 0.75" (5.6 x 4.4 x 1.9 cm) Model 222N9 - 2.50" x 1.20" x 0.75" (6.4 x 3 x 1.9 cm)

Patton Products