Speed up of up-going transition of TTL or DTL circuits under high _capacitive load

US4656367A · kind A · utility

Assignee

• International Business Machines Corporation · US

Inventors

• Edward F. Culican · Hyde Park, US
• Philip E. Pritzlaff, Jr. · Highland, US
• Helmut Schettler · Waldenbuch, DE
• Kenneth A. Van Goor · Salt Point, US

Key dates

• Filing date: Oct 18, 1985
• Grant date: Apr 7, 1987
• Expiry date: Oct 18, 2005

Classification

• Technology area (CPC H): Electricity
• CPC primary: H03K19/0136
• WIPO field: Basic communication processes
• WIPO sector: Electrical engineering

Abstract

A circuit for enhancing the ability of digital circuits to drive highly capacitive loads is disclosed. The circuit has particular utility when employed with logic circuits such as "TTL" (Transistor-Transistor Logic) and "DTL" (Diode-Transistor Logic).