RS-423 (TIA/EIA-423-B)

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RS-423 is similar to TIA/EIA-232-F, but features a reduced driver output swing and higher data rates.

RS-423 is an electrical standard, specifying driver and receiver requirements only - there is no common pinout for this interface. Unbalanced driver and a balanced receiver defined. The receivers’ requirements are identical to specified in TIA/ EIA-422-B standard. TIA/EIA-423-B is intended to be referenced by complete standards, such as TIA/EIA-530-A. TIA/ EIA-423-B specifies a unidirectional, multidrop (up to ten receivers) interface. Advantages over TIA/EIA-232-F include: multiple receiver operation, faster data rates, and common power supplies (typically ±5V).

SPECIFICATIONS RS423 RS422
Mode of Operation SINGLE - ENDED DIFFERENTIAL
Total Number of Drivers and Receivers on One Line 1 DRIVER
10 RECVR
1 DRIVER
10 RECVR
Maximum Cable Length 4000 FT. 4000 FT.
Maximum Data Rate 100kb/s 10Mb/s
Maximum Driver Output Voltage +/-6V -0.25V to +6V
Driver Output Signal Level (Loaded Min.) Loaded +/-3.6V
Driver Output Signal Level (Unloaded Max) Unloaded +/-6V
Driver Load Impedance (Ohms) >450 100
Max. Driver Current in High Z State Power On N/A
Max. Driver Current in High Z State Power Off +/-100uA
Slew Rate (Max.) Adjustable N/A
Receiver Input Voltage Range +/-12V -10V to +10V
Receiver Input Sensitivity +/-200mV +/-200mV
Receiver Input Resistance (Ohms) 4k min. 4k min.

References

Category:Serial Connectors

 

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