Electrical transmission or interconnection systems – Personnel safety or limit control features – Interlock
Patent
1978-08-07
1980-12-16
Anagnos, Larry N.
Electrical transmission or interconnection systems
Personnel safety or limit control features
Interlock
307238, 307279, 307DIG3, 365208, H03K 5153, H03K 3356, G11C 706
Patent
active
042399947
ABSTRACT:
A sense amplifier having a transition point defining the signal level at its input above which it senses one binary condition and below which it senses the other binary condition includes precharge means for offsetting its input very slightly, above or below its transition point to place it in one of its two binary sensing states. The sense amplifier is suited for use with a memory array whose cells are coupled to the input of the sense amplifier via a single gating transistor which conducts in the (source or emitter) follower mode for the one binary condition and in the common (source or emitter) mode for the other binary condition. Following the precharge, the output of the memory cell is coupled to the input of the sense amplifier. For the cell storing the one binary condition for which the gating transistor conducts in the follower mode, the sense amplifier remains in the binary state to which its input was precharged. For the cell storing the other binary condition, the gating transistor conducts in the common mode and causes the sense amplifier to quickly change state.
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De Simone et al., "Mosfet Sense Amplifier with Low-Output Impedance"; IBM Tech. Discl. Bull.; vol. 14, No. 8, pp. 2290-2291; 1/1972. _
Chu et al., "Low-Power, High-Speed Sense Latch"; IBM Tech. Discl. Bull.; vol. 17, No. 9, pp. 2582-2583; 2/1975. _
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Anagnos Larry N.
Christoffersen H.
RCA Corporation
Schanzer H. I.
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