CMX867A Low Power V.22 Modem


Posted on Feb 6, 2014

This RS-232 RS-232 /a> to RS-485 protocol converter uses two products for a complete operational system. The circuit will comply with all EIA and ITU specifications for RS-232 RS-232 /a> to RS-485 RS422 conversion. This is a rugged design that will handle +/-15kV ESD levels on the bus pins. The design is compatible with 3. 3V or 5V systems requirin


CMX867A Low Power V.22 Modem
Click here to download the full size of the above Circuit.

g only one pin compatible device change. Only six external capacitors are required, giving the design a small footprint. The RS-232 >SP3220 has receiver enable control (/EN) and driver shutdown control (/SHUTDOWN) if power saving is required. (Schematic figure 1) The SP3070/6 (14 pin package) CAN be substituted for the SP3071/7 to also shutdown the RS-485 transceiver. This provides power savings and extended battery life for low power systems. (Schematic figure 2) /SHUTDOWN=low and /EN=high This RS-232 RS-232 /a> to RS-485 protocol converter uses two products for a complete operational system. The circuit will comply with all EIA and ITU specifications for RS-232 RS-232 /a> to RS-485 RS422 conversion. This is a rugged design that will handle +/-15kV ESD levels on the bus pins. The design is compatible with 3. 3V or 5V systems requiring only one pin compatible device change. Only six external capacitors are required, giving the design a small footprint. The RS-232 >SP3220 has receiver enable control (/EN) and driver shutdown control (/SHUTDOWN) if power saving is required. (Schematic figure 1) The SP3070/6 (14 pin package) CAN be substituted for the SP3071/7 to also shutdown the RS-485 transceiver. This provides power savings and extended battery life for low power systems. (Schematic figure 2) /SHUTDOWN=low and /EN=high




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Precision LED Blinker
    Optical Theremin
    Dynamic Microphone Amplifier
    Tone control low noise circuit Schematic Diagram
    Systems Design Datagoo documentation
    Voltmeter + Ammeter LCD panel
    5 volt ttl voltage monitor
    model railway turnout control
    Advertising lights controller circuit diagram 555
    Lantern controller circuit diagram of a two-dimensional



    Top