Half Binary-to-Octal Decoder Type B155

Summary

The B155 is a binary-to-octal decoder module designed for use as a standalone 2-bit decoder or in combination with other units to form larger decoders (such as 3-bit or 16-state systems). It features two enable inputs and an emitter input for flexible system integration. The document details the module's logic through a truth table, specifies the electrical characteristics of its diode inputs, defines its output capacity (16 ma), and provides the power requirements (+10V/0.6 ma; -15V/53 ma). It also notes that the module can be expanded to control up to 32 states when multiple units are combined.