DESCRIPTION…
The SP301and SP302are proprietary single-chip devices that contain both RS-232 and RS-422
protocol line drivers and receivers. Their configuration may be changed at any time by logic levels
on two control lines. In any configuration, both the SP301and SP302fully meet the requirements
of the EIA RS-232D and RS-422 data communication standards. A loopback test mode is
provided.The SP301and SP302are available in 24-pin single width plastic, and 28-pin SOIC
packages for commercial and industrial temperature range operation.

■RS-232 and RS-422 on One Chip
■Multiple Drivers and Receivers
■Software-selectable Modes
■Loopback for Self-Testing
■Short-circuit Protected
■24-pin Single-width DIP or SOIC Package