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V35 Driver Using Low Cost HCMOS Circuits

IP.com Disclosure Number: IPCOM000057393D
Original Publication Date: 1988-May-01
Included in the Prior Art Database: 2005-Feb-15

Publishing Venue

IBM

Related People

Authors:
Ferry, M Jacquart, C [+details]

Abstract

A V35 driver using low cost HCMOS circuits is provided. Since internal impedances of these circuits decreased with the progress of technology, their use to perform switching functions may easily serve to provide a V35 driver. A possible shematic is shown in the figure with typical values of components represented. Good internal characteristics of HCMOS switching components I1 and I2 permit the following: Differential impedance is ZD = R1 // 2R2 . Common mode impedance is ZCM = R2 / 2. Each inverter I1, I2 can be one AC04 or two parallel HC240.