W708

This document is a schematic for the Digital Equipment Corporation (DEC) Communications Interfacer W708, dated 1967. It is identified as proprietary and intended for test and maintenance purposes.

The circuit primarily handles a Teletype serial input and a "clock input eight baud." It is constructed using Motorola MC700 Series Resistor-Transistor Logic (RTL) integrated circuits (MC724P, MC790P, MC789P), along with various discrete transistors (DEC4258, DEC6B), resistors, capacitors, and diodes. The system operates with +3.6V and -15V power supplies.

The schematic details numerous input and output signals that interface with other modules, specifically W706 and W707, providing clock, clear flag, and wait input signals, indicating its role in coordinating communication and control within a larger system.