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:

New Circuits

.

 


Popular Circuits

RS-232 to 100 MHz RF adapter
Wind battery Charger
Electronics Circuit Application: New Vacuum Tube Amplifier
The grain based on PIC18F4580 weighs system design
safe and security system
automatic wiper control
AVR ISP programmer In-System Programmer
Cascode - common collector amplifier



Top