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This true/complement generator (T.C.G.) provides high speed selection of arrays and regulated drive for output sense circuits.
English (United States)
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True Complement Generator for an Array with Feedback Regulated Output
This true/complement generator (T.C.G.) provides high speed selection of
arrays and regulated drive for output sense circuits.
In the drawing, a current switch true/complement generator comprising T1,
T2 and T3 is combined with a pair of feedback voltage regulators comprising T4,
T5 and T6, T7. The outputs of the feedback regulators are provided to an inhibit
transistor (TX) and a sense transistor T9 which, in turn, are connected to an
array (not shown). The feedback regulator outputs may be connected to an
inhibit and sense circuit of the second array by reversing the connections to the
inhibit-sense transistors of the second array.
When T2 is off, T6 and T7 together with R2, R6 and R7 form a feedback
voltage regulator circuit to supply constant reference voltage to the base of sense
transistor T9. When T2 is on, the regulator function is overridden and a down
level is applied to the base of T9.
T5 and T7 control the output uplevels of T4 and T6. The emitters of T4 and
T6 provide the reference voltages for the sense transistors T9 of the first and
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