Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1986-02-25
1987-09-22
Miller, Stanley D.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307243, 307454, 307467, H03K 19086, H03K 1762
Patent
active
046957499
ABSTRACT:
An emitter-coupled multiplexer has all transistors directly controlled by one select signal in parallel with transistors directly controlled by other select signals. Thus, in a 3:1 multiplexer (100), a first select signal (S0) directly controls one transistor (Q13); this transistor is in parallel with another transistor (Q14) which is directly controlled by a second select signal (S1). The second select signal also directly controls another transistor (Q15) in the same network (102). This transistor is in parallel with a transistor directly controlled by an input signal (I1) which is thus masked when the second select signal is activated. The second select signal also controls (at Q16 and Q18) subnetwork selection in another current network (104) of the multiplexer. The disclosed arrangement permits the multiplexer function to be implemented with a reduced transistor count and only two current sources in two-level series gating.
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Anderson Clifton L.
Fairchild Semiconductor Corporation
Hudspeth D. R.
Miller Stanley D.
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