I/O Bus Drivers

This document describes the M622 I/O Bus Driver module, a single-height M-series module featuring eight I/O bus drivers. Each driver combines an AND/OR integrated circuit gate with a discrete component open-collector driver. The module is pin-compatible with the M632 and is specifically engineered to drive PDP-15 I/O bus signals for positive logic modules. The technical specifications provided include TTL-compatible input characteristics, standard PDP-15 positive I/O bus output signal parameters (such as risetime, falltime, and current sink capabilities), and maximum power dissipation ratings.