M113

This document is a schematic diagram, copyrighted 1967 by Digital Equipment Corporation, for a proprietary circuit titled "10-2 Input NAND Gates M113" (Part Number M113-0-1, Revision C).

The schematic details a circuit primarily composed of ten two-input NAND gates, utilizing DEC7400N integrated circuits (labeled E1 through E3). It includes a power supply section deriving +3V from a +5V source, with a -15V line noted as unused. Key notes specify standard IC pin assignments: Pin 7 for Ground (GND) and Pin 14 for +5V.

A comprehensive parts list details the integrated circuits, various resistors (750 Ohm and 330 Ohm), and capacitors (0.01 µF). The document explicitly states its purpose is for test and maintenance.