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DIGITAL BIDIRECTIONAL BUS SWITCH

IP.com Disclosure Number: IPCOM000005533D
Original Publication Date: 1984-Apr-01
Included in the Prior Art Database: 2001-Oct-12

Publishing Venue

Motorola

Related People

Authors:
Arnold J. Morales

Abstract

This design solves the problem of emulating an MOS bidirectional bus switch in a TTL breadboard. Bidirectional bus switches are easily realized in MOS with couplers as follows: FIGURE 1 The "boot" signal, when asserted, simply connects lines B and A allowing the one line that is driven to "drive" the undriven line. That is, when "boot" is asserted, the coupler in effect becomes a low impedance resistor.