High speed shift register with t-t-l compatibility

Claim 2

A shift register having a plurality of successively coupled storage stages, each such storage stage comprising: an input and an output bistable multivibrator, each one thereof having a pair of directly coupled transistors, the collector electrode of each one of the pair of transistors of the input bistable multivibrator being connected, respectively, to an emitter electrode of a different one of the pair of transistors of the output bistable multivibrator; and a differential sensor, connected between the collector electrodes of the pair of transistors of the output bistable multivibrator, for detecting the condition of such output bistable multivibrator by sensing the relative polarity of a voltage developed between such collector electrodes.

Claim 3

A shift register having a plurality of successively coupled storage stages, each such storage stage comprising: a. an input and an output bistable multivibrator, each one thereof having a pair of directly coupled multi-emitter transistors, the collector electrode of each one of the transistors of the input bistable multivibrator being connected respectively to a first emitter electrode of a different one of the pair of transistors of the output bistable multivibrator; b. means, connected to one of the emitter electrodes of each one of the pair of transistors of the input bistable multivibrator for coupling such bistable multivibrator to an input enable signal source; c. means, connected to a second emitter electrode of eAch one of the pair of transistors of the output bistable multivibrator to a transfer enable signal source; and d. a differential sensor connected between the collector electrodes of the pair of transistors of the output bistable multivibrator, for detecting the condition of such output multivibrator by sensing the relative polarity of a voltage developed therebetween.

Claim 4

A shift register having a plurality of successively coupled storage stages, each such storage stage comprising: a. an input and an output bistable multivibrator, each one thereof having a pair of directly coupled multi-emitter transistors, the collector electrode of each one of the transistors of the input bistable multivibrator being connected respectively to a first emitter electrode of a different one of the pair of transistors of the output bistable multivibrator; b. means, connected to one of the emitter electrodes of each one of the pair of transistors of the input bistable multivibrator for coupling such bistable multivibrator to an input enable signal source; c. means, connected to a second emitter electrode of eAch one of the pair of transistors of the output bistable multivibrator to a transfer enable signal source; and d. a differential sensor connected between the collector electrodes of the pair of transistors of the output bistable multivibrator, for detecting the condition of such output multivibrator by sensing the relative polarity of a voltage developed therebetween.

Claim 5

A shift register suitable for integrated circuit fabrication and compatible with transistor-transistor-logic (T-T-L) circuitry, comprising: a. a plurality of storage stages including an input storage stage and successively coupled storage stages, each one of the plurality of storage stages including a first and a second bistable multivibrator, each such first and second multivibrator having a pair of interconnected transistors, each one of the pair of transistors having a control emitter electrode and a data emitter electrode, the base electrode of each one of such pair of transistors being connected directly to the collector electrode of the other one of such pair of transistors at a terminal, whereby a pair of terminals is formed for each first and second bistable multivibrator, the pair of terminals formed for the first bistable multivibrator of each one of the plurality of storage stages being directly connected to the data emitter electrodes of a different one of the pair of transistors forming the second bistable element of the succeeding one of the plurality of storage stages; b. first means, coupled to the control emitter electrodes of the pair of transistors forming the first bistable multivibrator, for enabling such multivibrator to respond in accordance with a signal applied to the data emitter electrodes of such pair of transistors; c. second means, coupled to the control emitter electrode of the pair of transistors forming the second bistable multivibrator for enabling such multivibrator to respond to a signal applied to the data emitter electrodes of such pair of transistors; and d. a differential sensor connected between the collector electrodes of the pair of transistors forming the second bistable multivibrator of one of the plurality of storage stages for detecting the condition of such output bistable multivibrator by sensing the relative polarity of a voltage developed between such collector electrodes.

Claim 6

A shift register suitable for integrated circuit fabrication and compatible with transistor-transistor-logic (T-T-L) circuitry, comprising: a. a plurality of storage stages including an input storage stage and successively coupled storage stages, each one of the plurality of storage stages including a first and a second bistable multivibrator, each such first and second multivibrator having a pair of interconnected transistors, each one of the pair of transistors having a control emitter electrode and a data emitter electrode, the base electrode of each one of such pair of transistors being connected directly to the collector electrode of the other one of such pair of transistors at a terminal, whereby a pair of terminals is formed for each first and second bistable multivibrator, the pair of terminals formed for the first bistable multivibrator of each one of the plurality of storage stages being directly connected to the data emitter electrodes of a different one of the pair of transistors forming the second bistable element of the succeeding one of the plurality of storage stages; b. first means, coupled to the control emitter electrodes of the pair of transistors forming the first bistable multivibrator, for enabling such multivibrator to respond in accordance with a signal applied to the data emitter electrodes of such pair of transistors; c. second means, coupled to the control emitter electrode of the pair of transistors forming the second bistable multivibrator for enabling such multivibrator to respond to a signal applied to the data emitter electrodes of such pair of transistors; and d. a differential sensor connected between the collector electrodes of the pair of transistors forming the second bistable multivibrator of one of the plurality of storage stages for detecting the condition of such output bistable multivibrator by sensing the relative polarity of a voltage developed between such collector electrodes.