DESCRIPTION

The SP332 is a monolithic device that contains both RS-232 and RS-485 line drivers and receivers. The configuration of the SP332 can be changed at any time by changing the logic state of two control pins. The device also includes a loop back function which internally connects driver outputs to receiver inputs for a chip self test. An Exar-patended charge pump allows +5V-only operation.

• +5V Only Single Supply Operation

• Software Programmable RS-232 or RS-485 Selection

• 4 Drivers, 4 Receivers RS-232

• 2 Drivers, 2 Receivers RS-485

• Loop back function for Self Test

• 28-pin WSOIC package