Multivalued I2L Circuits for TSC Checkers

We present a TSC multivalued I2L comparator which uses multivalued current inputs and two binary voltage outputs. This circuit is self-testing and fault-secure for single faults (either "stuck-at" or "skew" faults). It is the basic circuit to realize TSC checkers for nonseparable or separable codes. The schemes are simpler than the designs of the TSC combinational checkers.