Stand Alone UART - SIOA7 IC
7 Bits Serial Input/Output Expandable and Addressable
The SIOA7 IC is a stand alone UART designed to provide 7 bits of input and output data. (Expandable to 112 bits.) The SIOA7 may connect to RS-232, USB, RS-485, Ethernet or directly to your UART. Outputs can be used to drive relays, logic, optocouplers or a transistors. Inputs can be from switches, relay contacts, logic, optocouplers or a transistor switched to ground. The SIOA7 has internal pull resistors on most inputs to minimize additional parts. After receiving an address byte matching the ADR0-3 pins is received on the SIN- pin, the next bye received on the SIN- pin is placed on the OA0-6 pins and the data on the IA0-6 pins are transmitted SOUT- pin. A positive pulse is generated on the RXP pin every time a byte is placed on the OA0-6 pins. More than one SIOA7 chip may be connected together to achieve up to 112 bits of input and output. The serial format to the SIOA7 is standard asynchronous format, using 8 bits, 1 stop and no parity at 9600 BPS. Other formats and encoding are available, contact the factory. A .1 uF bypass capacitor is suggested across the VDD and VSS pins. The part uses the standard 28 pin .3 inch width SOIC and DIP package.
To order or for more information contact us at: